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      "modified_at": "2026-08-23T07:26:59+00:00",
      "new": {
        "access": "Anthropic says all Claude API requests to claude-opus-4-1-20250805 now return an error.",
        "status": "Retired"
      },
      "new_access": "Anthropic says all Claude API requests to claude-opus-4-1-20250805 now return an error.",
      "new_limit": "",
      "new_price": "",
      "new_status": "Retired",
      "observed_at": "2026-06-05T00:00:00Z",
      "official_source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
      "official_sources": [
        "https://platform.claude.com/docs/en/about-claude/model-deprecations",
        "https://platform.claude.com/docs/en/release-notes/overview"
      ],
      "previous": {
        "access": "Claude Opus 4.1 remained callable before the retirement date.",
        "status": "Deprecated until August 5, 2026"
      },
      "previous_access": "Claude Opus 4.1 remained callable before the retirement date.",
      "previous_limit": "",
      "previous_price": "",
      "previous_status": "Deprecated until August 5, 2026",
      "product": "Claude API",
      "product_relationship_id": "913011",
      "publication_eligible": true,
      "published": "2026-07-26T20:47:40+00:00",
      "published_at": "2026-07-26T20:47:40+00:00",
      "recommended_action": "Remove the retired exact ID from production configuration. Validate a currently available replacement against your platform, access and workload; do not present either conflicting recommendation as the single official answer.",
      "recommended_alternative": "Unresolved official-source conflict: Claude Opus 5 versus claude-opus-4-8.",
      "record_class": "operational_breakage",
      "record_url": "https://kingy.ai/ai-launch-tracker/anthropic-will-retire-claude-opus-4-1-on-august-5/",
      "region": "Claude API, Claude Platform on AWS and Microsoft Foundry; partner-operated platform schedules differ",
      "relationships": {
        "models": [],
        "product": {
          "id": 913011,
          "name": "Claude API",
          "url": "https://kingy.ai/ai-tools/claude-api/"
        },
        "vendor": {
          "id": 913004,
          "name": "Anthropic",
          "url": "https://kingy.ai/ai-companies/anthropic/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_tested",
      "required_action": "Remove the retired exact ID from production configuration. Validate a currently available replacement against your platform, access and workload; do not present either conflicting recommendation as the single official answer.",
      "revision_hash": "sha256:33e46d0882bfcbf61ac110671a1b50e3644e384bbca92093fb24979a23a5bd0f",
      "revision_number": 5,
      "schema_version": "1.1-staging-compat",
      "severity": "critical",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://platform.claude.com/docs/en/about-claude/model-deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        }
      ],
      "source_summary": "Anthropic confirms that claude-opus-4-1-20250805 retired on August 5, 2026 and Claude API requests return an error. Its retirement release note recommends Claude Opus 5, while its current deprecation table recommends claude-opus-4-8; the recommended replacement is inconsistent across official sources.",
      "stable_id": "ksr-anthropic-claude-opus-4-1-2026-08-05",
      "successor_event_id": "",
      "superseded_by": "",
      "superseded_by_event_id": "",
      "superseded_state": "active",
      "time_points": [
        {
          "date": "2026-06-05",
          "kind": "announced",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-claude-opus-4-1-2026-08-05:time-announced",
          "status": "confirmed"
        },
        {
          "date": "2026-06-05",
          "kind": "effective",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-claude-opus-4-1-2026-08-05:time-effective",
          "status": "confirmed"
        },
        {
          "date": "2026-08-05",
          "kind": "migration_deadline",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-claude-opus-4-1-2026-08-05:time-deadline",
          "status": "confirmed"
        }
      ],
      "title": "Anthropic retired Claude Opus 4.1 on August 5, 2026",
      "url": "https://kingy.ai/ai-launch-tracker/anthropic-will-retire-claude-opus-4-1-on-august-5/",
      "vendor": "Anthropic",
      "vendor_relationship_id": "913004",
      "visibility": "staging",
      "rss_guid": "ksr-anthropic-claude-opus-4-1-2026-08-05@kingy.ai"
    },
    {
      "access_regional_impact": "The AnthropicBedrock client no longer defaults to us-east-1 when no AWS region is configured; direct Claude API clients are unaffected by that specific change.",
      "admission_state": "admitted",
      "affected_audience": "Python applications upgrading the Anthropic SDK to v1, especially custom HTTP clients, mocks, legacy completions, sampling overrides, async raw-response parsing and Bedrock integrations.",
      "affected_components": "anthropic Python SDK v1, httpx2 transport, legacy Text Completions, Messages sampling parameters, async raw responses and AnthropicBedrock region handling",
      "affected_subjects": [
        {
          "affectedRange": ">=1.0.0",
          "ecosystem": "pypi",
          "entityId": "pypi:anthropic",
          "exclusions": [
            "pre-v1 pins",
            "direct API calls unaffected by Bedrock region default"
          ],
          "identifiers": [
            "anthropic"
          ],
          "regions": [
            "Claude API and AnthropicBedrock Python SDK integrations"
          ],
          "surface": "sdk"
        }
      ],
      "announced_at": "2026-08-20",
      "announcement_date": "2026-08-20",
      "article_url": "https://kingy.ai/ai-launch-tracker/anthropic-python-sdk-v1-introduces-breaking-runtime-and-api-changes/",
      "breakage_mode": "runtime_failure",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/anthropic-python-sdk-v1-introduces-breaking-runtime-and-api-changes/",
      "change_type": "breaking_api_change",
      "correction_history": [],
      "correction_of_event_id": "",
      "deadline_at": "",
      "detection_signatures": [
        {
          "expectedAfter": {
            "access": "v1 requires Python 3.10+, uses httpx2, removes deprecated surfaces, changes async raw-response parsing and errors when AnthropicBedrock has no AWS region.",
            "status": "v1 breaking changes released"
          },
          "expectedBefore": {
            "access": "Python 3.9 and earlier SDK surfaces, httpx transport objects, legacy Text Completions and removed method parameters were accepted by pre-v1 releases.",
            "status": "Pre-v1 SDK behavior"
          },
          "kind": "package_range",
          "phase": "exposure",
          "selector": "pypi:anthropic>=1.0.0",
          "sourceClaimId": "claim:ksr-anthropic-python-sdk-v1-2026-08-20:consequence"
        }
      ],
      "effective_at": "2026-08-20",
      "effective_date": "2026-08-20",
      "entity_id": "kingy:product:claude-api",
      "entity_stable_id": "",
      "entity_url": "https://kingy.ai/ai-tools/claude-api/",
      "event_id": "ksr-anthropic-python-sdk-v1-2026-08-20",
      "event_type": "product_change",
      "evidence_strength": "strong",
      "expires_at": "",
      "expiry_date": "",
      "first_detected": "2026-08-20",
      "id": 929061,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "lifecycle_state": "active",
      "materiality": "critical",
      "migration_deadline": "",
      "migration_impact": "Unpinned upgrades can fail at import, request construction, async response parsing or Bedrock client initialization. Python 3.9 environments cannot run v1.",
      "migration_path": "Upgrade the runtime to Python 3.10+, move custom HTTP configuration to httpx2, call httpx2.alias_httpx() when patch-based tracing or mocks require it, remove deleted APIs and parameters, await raw response parsing, and set an explicit AWS region for AnthropicBedrock.",
      "model_relationship_ids": "",
      "model_version": "anthropic Python SDK v1.0",
      "modified": "2026-08-23T07:27:04+00:00",
      "modified_at": "2026-08-23T07:27:04+00:00",
      "new": {
        "access": "v1 requires Python 3.10+, uses httpx2, removes deprecated surfaces, changes async raw-response parsing and errors when AnthropicBedrock has no AWS region.",
        "status": "v1 breaking changes released"
      },
      "new_access": "v1 requires Python 3.10+, uses httpx2, removes deprecated surfaces, changes async raw-response parsing and errors when AnthropicBedrock has no AWS region.",
      "new_limit": "",
      "new_price": "",
      "new_status": "v1 breaking changes released",
      "observed_at": "2026-08-20T00:00:00Z",
      "official_source": "https://platform.claude.com/docs/en/release-notes/overview",
      "official_sources": [
        "https://platform.claude.com/docs/en/release-notes/overview"
      ],
      "previous": {
        "access": "Python 3.9 and earlier SDK surfaces, httpx transport objects, legacy Text Completions and removed method parameters were accepted by pre-v1 releases.",
        "status": "Pre-v1 SDK behavior"
      },
      "previous_access": "Python 3.9 and earlier SDK surfaces, httpx transport objects, legacy Text Completions and removed method parameters were accepted by pre-v1 releases.",
      "previous_limit": "",
      "previous_price": "",
      "previous_status": "Pre-v1 SDK behavior",
      "product": "Claude API",
      "product_relationship_id": "913011",
      "publication_eligible": true,
      "published": "2026-08-23T07:27:04+00:00",
      "published_at": "2026-08-23T07:27:04+00:00",
      "recommended_action": "Pin the pre-v1 release, upgrade in a dedicated branch, run transport, request-shape, async, mock and Bedrock regression tests, then deploy through a canary with a fast dependency rollback.",
      "recommended_alternative": "Remain temporarily on the last validated pre-v1 SDK while completing the migration",
      "record_class": "operational_breakage",
      "record_url": "https://kingy.ai/ai-launch-tracker/anthropic-python-sdk-v1-introduces-breaking-runtime-and-api-changes/",
      "region": "Claude API and AnthropicBedrock Python SDK integrations",
      "relationships": {
        "models": [],
        "product": {
          "id": 913011,
          "name": "Claude API",
          "url": "https://kingy.ai/ai-tools/claude-api/"
        },
        "vendor": {
          "id": 913004,
          "name": "Anthropic",
          "url": "https://kingy.ai/ai-companies/anthropic/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_tested",
      "required_action": "Pin the current SDK while preparing the upgrade; move to Python 3.10+, replace custom httpx objects with httpx2, remove legacy surfaces, update async parsing and configure an explicit Bedrock region before staging v1.",
      "revision_hash": "sha256:16f08142dcf29a0c40648abf2f119938d14a443c140cef9c337fc4eea2d77200",
      "revision_number": 5,
      "schema_version": "1.1-staging-compat",
      "severity": "critical",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        }
      ],
      "source_summary": "Anthropic released Python SDK v1 on August 20 with Python 3.10+, httpx2, removed legacy APIs and sampling parameters, async raw-response parsing changes, and stricter AnthropicBedrock region handling.",
      "stable_id": "ksr-anthropic-python-sdk-v1-2026-08-20",
      "successor_event_id": "",
      "superseded_by": "",
      "superseded_by_event_id": "",
      "superseded_state": "active",
      "time_points": [
        {
          "date": "2026-08-20",
          "kind": "announced",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-python-sdk-v1-2026-08-20:time-announced",
          "status": "confirmed"
        },
        {
          "date": "2026-08-20",
          "kind": "effective",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-python-sdk-v1-2026-08-20:time-effective",
          "status": "confirmed"
        }
      ],
      "title": "Anthropic Python SDK v1 introduces breaking runtime and API changes",
      "url": "https://kingy.ai/ai-launch-tracker/anthropic-python-sdk-v1-introduces-breaking-runtime-and-api-changes/",
      "vendor": "Anthropic",
      "vendor_relationship_id": "913004",
      "visibility": "staging",
      "rss_guid": "ksr-anthropic-python-sdk-v1-2026-08-20@kingy.ai"
    },
    {
      "access_regional_impact": "Anthropic documents this as model behavior on its API; partner-platform behavior should be checked separately.",
      "admission_state": "admitted",
      "affected_audience": "Developers setting non-default sampling parameters on Claude Opus 4.7 or later models, including Claude Mythos Preview.",
      "affected_components": "temperature, top_p and top_k on Claude Opus 4.7",
      "affected_subjects": [
        {
          "affectedRange": null,
          "ecosystem": null,
          "entityId": "anthropic:model:claude-opus-4-7",
          "exclusions": [
            "default sampling values",
            "unverified partner platforms"
          ],
          "identifiers": [
            "claude-opus-4-7",
            "temperature",
            "top_p",
            "top_k"
          ],
          "regions": [
            "Claude API behavior for affected models"
          ],
          "surface": "api"
        }
      ],
      "announced_at": "2026-04-16",
      "announcement_date": "2026-04-16",
      "article_url": "https://kingy.ai/ai-launch-tracker/anthropic-deprecates-non-default-sampling-controls-on-newer-claude-models/",
      "breakage_mode": "runtime_failure",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/anthropic-deprecates-non-default-sampling-controls-on-newer-claude-models/",
      "change_type": "breaking_api_change",
      "correction_history": [
        "2026-09-21: Narrow the legacy model scope to the exact model admitted by the typed record. Current evidence does not support a blanket claim about every later model."
      ],
      "correction_of_event_id": "",
      "deadline_at": "",
      "detection_signatures": [
        {
          "expectedAfter": {
            "access": "Affected requests with non-default sampling controls return HTTP 400",
            "status": "Non-default values rejected"
          },
          "expectedBefore": {
            "access": "Requests could set non-default temperature, top_p and top_k values",
            "status": "Parameters accepted"
          },
          "kind": "status_code",
          "phase": "failure",
          "selector": "claude-opus-4-7:sampling-controls:http-400",
          "sourceClaimId": "claim:ksr-anthropic-sampling-controls-opus-4-7:consequence"
        }
      ],
      "effective_at": "2026-04-16",
      "effective_date": "2026-04-16",
      "entity_id": "kingy:product:claude-api",
      "entity_stable_id": "",
      "entity_url": "https://kingy.ai/ai-tools/claude-api/",
      "event_id": "ksr-anthropic-sampling-controls-opus-4-7",
      "event_type": "product_change",
      "evidence_strength": "strong",
      "expires_at": "",
      "expiry_date": "",
      "first_detected": "2026-07-26",
      "id": 925939,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "lifecycle_state": "active",
      "materiality": "high",
      "migration_deadline": "",
      "migration_impact": "Anthropic documents this as model behavior on its API; partner-platform behavior should be checked separately.",
      "migration_path": "Omit temperature, top_p and top_k on affected models and use explicit prompting to guide response behavior.",
      "model_relationship_ids": "916006",
      "model_version": "Claude Opus 4.7",
      "modified": "2026-08-23T07:26:59+00:00",
      "modified_at": "2026-08-23T07:26:59+00:00",
      "new": {
        "access": "Affected requests with non-default sampling controls return HTTP 400",
        "status": "Non-default values rejected"
      },
      "new_access": "Affected requests with non-default sampling controls return HTTP 400",
      "new_limit": "",
      "new_price": "",
      "new_status": "Non-default values rejected",
      "observed_at": "2026-07-26T00:00:00Z",
      "official_source": "https://platform.claude.com/docs/en/release-notes/overview",
      "official_sources": [
        "https://platform.claude.com/docs/en/release-notes/overview",
        "https://www.anthropic.com/news/claude-opus-4-7"
      ],
      "previous": {
        "access": "Requests could set non-default temperature, top_p and top_k values",
        "status": "Parameters accepted"
      },
      "previous_access": "Requests could set non-default temperature, top_p and top_k values",
      "previous_limit": "",
      "previous_price": "",
      "previous_status": "Parameters accepted",
      "product": "Claude API",
      "product_relationship_id": "913011",
      "publication_eligible": true,
      "published": "2026-07-26T20:47:40+00:00",
      "published_at": "2026-07-26T20:47:40+00:00",
      "recommended_action": "Remove temperature, top_p and top_k overrides from affected requests and use prompting to guide behavior.",
      "recommended_alternative": "Omit the parameters and use prompting",
      "record_class": "operational_breakage",
      "record_url": "https://kingy.ai/ai-launch-tracker/anthropic-deprecates-non-default-sampling-controls-on-newer-claude-models/",
      "region": "Claude API behavior for affected models",
      "relationships": {
        "models": [
          {
            "id": 916006,
            "name": "Claude Opus 4.7",
            "url": "https://kingy.ai/ai-models/claude-opus-4-7/"
          }
        ],
        "product": {
          "id": 913011,
          "name": "Claude API",
          "url": "https://kingy.ai/ai-tools/claude-api/"
        },
        "vendor": {
          "id": 913004,
          "name": "Anthropic",
          "url": "https://kingy.ai/ai-companies/anthropic/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_tested",
      "required_action": "Remove temperature, top_p and top_k overrides from affected requests and use prompting to guide behavior.",
      "revision_hash": "sha256:856abd1ce4c54e93656d799d552e6a3902a1dc7d532dcc08bc20f29607e221e3",
      "revision_number": 5,
      "schema_version": "1.1-staging-compat",
      "severity": "high",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://www.anthropic.com/news/claude-opus-4-7"
        }
      ],
      "source_summary": "Starting with the April 16, 2026 launch of Claude Opus 4.7, non-default temperature, top_p, and top_k values return HTTP 400; Anthropic recommends omitting them and using prompting.",
      "stable_id": "ksr-anthropic-sampling-controls-opus-4-7",
      "successor_event_id": "",
      "superseded_by": "",
      "superseded_by_event_id": "",
      "superseded_state": "active",
      "time_points": [
        {
          "date": "2026-04-16",
          "kind": "announced",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-sampling-controls-opus-4-7:time-announced",
          "status": "confirmed"
        },
        {
          "date": "2026-04-16",
          "kind": "effective",
          "precision": "date",
          "sourceClaimId": "claim:ksr-anthropic-sampling-controls-opus-4-7:time-effective",
          "status": "confirmed"
        }
      ],
      "title": "Anthropic removes non-default sampling controls starting with Claude Opus 4.7",
      "url": "https://kingy.ai/ai-launch-tracker/anthropic-deprecates-non-default-sampling-controls-on-newer-claude-models/",
      "vendor": "Anthropic",
      "vendor_relationship_id": "913004",
      "visibility": "staging",
      "rss_guid": "ksr-anthropic-sampling-controls-opus-4-7@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-anthropic-sdk-beta-files-skills-2026-08-27",
      "event_id": "ksr-anthropic-sdk-beta-files-skills-2026-08-27",
      "title": "Anthropic SDKs changed Files and Skills beta client behavior",
      "url": "https://kingy.ai/ai-launch-tracker/anthropic-sdk-beta-files-skills-stable-client-change/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/anthropic-sdk-beta-files-skills-stable-client-change/",
      "article_url": "https://kingy.ai/ai-launch-tracker/anthropic-sdk-beta-files-skills-stable-client-change/",
      "vendor": "Anthropic",
      "product": "Claude API",
      "model_version": "Python 1.2.0; TypeScript 0.122.0; Go 1.68.0; Java 2.59.0; Ruby 1.67.0; C# 12.44.0",
      "change_type": "breaking_api_change",
      "event_type": "breaking_api_change",
      "severity": "medium",
      "materiality": "medium",
      "affected_components": "client.beta.files, client.beta.skills, client.beta.skills.delete(), BetaSkill / BetaContainerSkill",
      "affected_audience": "Developers upgrading Anthropic SDKs with Files or Skills integrations.",
      "region": "Anthropic SDKs; behavior depends on whether a beta header is explicitly sent",
      "announcement_date": "2026-08-27",
      "announced_at": "2026-08-27",
      "effective_date": "2026-08-27",
      "effective_at": "2026-08-27",
      "migration_deadline": "",
      "deadline_at": "",
      "previous_status": "The beta client methods sent legacy beta headers and returned beta response shapes.",
      "new_status": "In Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0 and C# 12.44.0, beta Files/Skills clients stop sending legacy beta headers and return stable shapes. The change also makes client.beta.skills.delete() delete the Skill and all versions, and renames BetaSkill to BetaContainerSkill. Explicit requests retaining the beta headers keep beta shapes.",
      "previous": {
        "status": "The beta client methods sent legacy beta headers and returned beta response shapes."
      },
      "new": {
        "status": "In Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0 and C# 12.44.0, beta Files/Skills clients stop sending legacy beta headers and return stable shapes. The change also makes client.beta.skills.delete() delete the Skill and all versions, and renames BetaSkill to BetaContainerSkill. Explicit requests retaining the beta headers keep beta shapes."
      },
      "required_action": "Audit exact SDK versions, beta Files/Skills callers, response parsing and BetaSkill type references. Review beta.skills.delete() callers for whole-Skill deletion before upgrading; test using disposable fixtures.",
      "recommended_action": "Audit exact SDK versions, beta Files/Skills callers, response parsing and BetaSkill type references. Review beta.skills.delete() callers for whole-Skill deletion before upgrading; test using disposable fixtures.",
      "migration_path": "Audit the listed SDK versions, use stable response shapes, update BetaSkill type references, and review whole-Skill deletion callers.",
      "recommended_alternative": "Stable Files/Skills response shapes and BetaContainerSkill; review deletion semantics before upgrade.",
      "access_regional_impact": "Affected SDK upgrades change beta Files/Skills response shapes. client.beta.skills.delete() deletes a Skill and all its versions; BetaSkill is renamed BetaContainerSkill. Explicit beta headers retain beta shapes.",
      "migration_impact": "Affected SDK upgrades change beta Files/Skills response shapes. client.beta.skills.delete() deletes a Skill and all its versions; BetaSkill is renamed BetaContainerSkill. Explicit beta headers retain beta shapes.",
      "official_source": "https://platform.claude.com/docs/en/release-notes/overview",
      "official_sources": [
        "https://platform.claude.com/docs/en/release-notes/overview"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-08-27",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [
        "2026-09-21: Live summary omits the material deletion consequence and exact introduction versions. In Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0 and C# 12.44.0, beta Files/Skills clients stop sending legacy beta headers and return stable shapes. The change also makes client.beta.skills.delete() delete the Skill and all versions, and renames BetaSkill to BetaContainerSkill. Explicit requests retaining the beta headers keep beta shapes."
      ],
      "superseded_state": "active",
      "source_summary": "In Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0 and C# 12.44.0, beta Files/Skills clients stop sending legacy beta headers and return stable shapes. The change also makes client.beta.skills.delete() delete the Skill and all versions, and renames BetaSkill to BetaContainerSkill. Explicit requests retaining the beta headers keep beta shapes.",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "contract_break",
      "admission_state": "admitted",
      "featured_media_id": 925927,
      "time_points": [
        {
          "date": "2026-08-27",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "date": "2026-08-27",
          "kind": "effective",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:ea3fd75f4fa115158250f58e2d695738057dac3c93b1420dba3ae1181bf4cb3c",
      "revision_number": 6,
      "record_url": "https://kingy.ai/ai-launch-tracker/anthropic-sdk-beta-files-skills-stable-client-change/",
      "rss_guid": "ksr-anthropic-sdk-beta-files-skills-2026-08-27@kingy.ai",
      "kingy_verdict": "In Python 1.2.0, TypeScript 0.122.0, Go 1.68.0, Java 2.59.0, Ruby 1.67.0 and C# 12.44.0, beta Files/Skills clients stop sending legacy beta headers and return stable shapes. The change also makes client.beta.skills.delete() delete the Skill and all versions, and renames BetaSkill to BetaContainerSkill. Explicit requests retaining the beta headers keep beta shapes. Audit exact SDK versions, beta Files/Skills callers, response parsing, BetaSkill type references and beta.skills.delete() callers for whole-Skill deletion before upgrading; test using disposable fixtures."
    },
    {
      "access_regional_impact": "The current Gemini API lifecycle table applies platform-wide and lists no shutdown date for gemini-2.5-pro.",
      "admission_state": "admitted",
      "affected_audience": "Gemini API developers with applications pinned to the stable Gemini 2.5 Pro model.",
      "affected_components": "gemini-2.5-pro",
      "affected_subjects": [
        {
          "affectedRange": null,
          "ecosystem": null,
          "entityId": "google:model:gemini-2.5-pro",
          "exclusions": [],
          "identifiers": [
            "gemini-2.5-pro"
          ],
          "regions": [
            "Gemini API; no regional exception documented"
          ],
          "surface": "api"
        }
      ],
      "announced_at": "",
      "announcement_date": "",
      "article_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-pro-is-scheduled-to-shut-down-october-16/",
      "breakage_mode": null,
      "canonical_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-pro-is-scheduled-to-shut-down-october-16/",
      "change_type": "access_change",
      "correction_history": [
        "2026-08-23: Corrected the earlier October 16 claim after Google’s current official table listed no announced shutdown date.",
        "2026-09-12: Rechecked the official lifecycle and pricing rows. Removed the withdrawn October 16 deadline and retirement wording from the generic fields as well as the Radar record. Cleared unsupported announcement/effective dates. Retained the old date only in the cancelled calendar revision for existing subscribers."
      ],
      "correction_of_event_id": "",
      "deadline_at": "",
      "detection_signatures": [
        {
          "expectedAfter": {
            "access": "Google’s current deprecation table says no shutdown date has been announced for gemini-2.5-pro.",
            "status": "No shutdown date announced"
          },
          "expectedBefore": {
            "access": "Kingy previously reported October 16, 2026 as the earliest possible shutdown date.",
            "status": "Radar listed an October 16 retirement deadline"
          },
          "kind": "model_id",
          "phase": "verification",
          "selector": "gemini-2.5-pro:deprecation-table:shutdown-date",
          "sourceClaimId": "claim:ksr-google-gemini-2-5-pro-2026-10-16:consequence:r3"
        }
      ],
      "effective_at": "",
      "effective_date": "",
      "entity_id": "kingy:product:gemini-api",
      "entity_stable_id": "",
      "entity_url": "https://kingy.ai/ai-tools/gemini-api/",
      "event_id": "ksr-google-gemini-2-5-pro-2026-10-16",
      "event_type": "correction",
      "evidence_strength": "strong",
      "expires_at": "",
      "expiry_date": "",
      "first_detected": "2026-07-23",
      "id": 925941,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "lifecycle_state": "corrected",
      "materiality": "medium",
      "migration_deadline": "",
      "migration_impact": "No forced migration date is currently announced. Teams may still evaluate newer models, but October 16 must not be treated as an official cutoff.",
      "migration_path": "No forced migration is currently required. If changing models voluntarily, test the chosen replacement independently and preserve a rollback path.",
      "model_relationship_ids": "914694",
      "model_version": "gemini-2.5-pro",
      "modified": "2026-09-12T19:41:22Z",
      "modified_at": "2026-09-12T19:41:22Z",
      "new": {
        "access": "Google’s current deprecation table says no shutdown date has been announced for gemini-2.5-pro.",
        "status": "No shutdown date announced"
      },
      "new_access": "Google’s current deprecation table says no shutdown date has been announced for gemini-2.5-pro.",
      "new_limit": "",
      "new_price": "",
      "new_status": "No shutdown date announced",
      "observed_at": "2026-07-23T00:00:00Z",
      "official_source": "https://ai.google.dev/gemini-api/docs/deprecations",
      "official_sources": [
        "https://ai.google.dev/gemini-api/docs/deprecations",
        "https://ai.google.dev/gemini-api/docs/pricing"
      ],
      "previous": {
        "access": "Kingy previously reported October 16, 2026 as the earliest possible shutdown date.",
        "status": "Radar listed an October 16 retirement deadline"
      },
      "previous_access": "Kingy previously reported October 16, 2026 as the earliest possible shutdown date.",
      "previous_limit": "",
      "previous_price": "",
      "previous_status": "Radar listed an October 16 retirement deadline",
      "product": "Gemini API",
      "product_relationship_id": "913045",
      "publication_eligible": true,
      "published": "2026-07-26T20:47:40+00:00",
      "published_at": "2026-07-26T20:47:40+00:00",
      "recommended_action": "Remove October 16 from internal shutdown plans unless Google publishes a new official date; continue monitoring the Gemini API deprecation table.",
      "recommended_alternative": "No forced replacement currently listed",
      "record_class": "correction",
      "record_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-pro-is-scheduled-to-shut-down-october-16/",
      "region": "Gemini API; no regional exception documented",
      "relationships": {
        "models": [
          {
            "id": 914694,
            "name": "Gemini 2.5 Pro",
            "url": "https://kingy.ai/ai-models/gemini-2-5-pro/"
          }
        ],
        "product": {
          "id": 913045,
          "name": "Gemini API",
          "url": "https://kingy.ai/ai-tools/gemini-api/"
        },
        "vendor": {
          "id": 913030,
          "name": "Google",
          "url": "https://kingy.ai/ai-companies/google/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_applicable",
      "required_action": "Remove October 16 from internal shutdown plans unless Google publishes a new official date; continue monitoring the Gemini API deprecation table.",
      "revision_hash": "sha256:a2c24b554430ff996779ec3d7d0e10a020ba3835ef908413c929b927f15fd97f",
      "revision_number": 7,
      "schema_version": "1.1-staging-compat",
      "severity": "medium",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/pricing"
        }
      ],
      "source_summary": "Google currently lists no shutdown date or recommended replacement for the stable gemini-2.5-pro model. Kingy has withdrawn its earlier October 16 retirement claim.",
      "stable_id": "ksr-google-gemini-2-5-pro-2026-10-16",
      "successor_event_id": "",
      "superseded_by": "",
      "superseded_by_event_id": "",
      "superseded_state": "cancelled",
      "time_points": [
        {
          "date": "2026-10-16",
          "kind": "shutdown",
          "precision": "date",
          "sourceClaimId": "claim:ksr-google-gemini-2-5-pro-2026-10-16:time-shutdown-withdrawn:r3",
          "status": "withdrawn"
        }
      ],
      "title": "Google currently lists no Gemini 2.5 Pro shutdown date",
      "url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-pro-is-scheduled-to-shut-down-october-16/",
      "vendor": "Google",
      "vendor_relationship_id": "913030",
      "visibility": "staging",
      "ics_last_deadline": "2026-10-16",
      "ics_status": "CANCELLED",
      "review_scope": "Reviewed the exact gemini-2.5-pro lifecycle row and standard free/paid pricing row. No shutdown date or replacement is listed; no live inference or workload migration was tested.",
      "reviewed_at": "2026-09-12T19:10:54.703288+00:00",
      "ics_sequence": 3,
      "ics_last_modified": "2026-09-12T19:40:39Z",
      "source_checks": [
        {
          "url": "https://ai.google.dev/gemini-api/docs/deprecations",
          "status": "verified",
          "checked_at": "2026-09-12",
          "note": "Reviewed the exact gemini-2.5-pro lifecycle row and standard free/paid pricing row. No shutdown date or replacement is listed; no live inference or workload migration was tested."
        },
        {
          "url": "https://ai.google.dev/gemini-api/docs/pricing",
          "status": "verified",
          "checked_at": "2026-09-12",
          "note": "Reviewed the exact gemini-2.5-pro lifecycle row and standard free/paid pricing row. No shutdown date or replacement is listed; no live inference or workload migration was tested."
        }
      ],
      "pricing": "Google lists free-tier standard input and output tokens. Paid standard rates per million tokens are $1.25 input and $10 output for prompts up to 200,000 tokens, or $2.50 input and $15 output above that threshold. Output includes thinking tokens; caching, grounding and other service tiers have separate rates.",
      "rss_guid": "ksr-google-gemini-2-5-pro-2026-10-16@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-google-gemini-omni-flash-preview-2026-09-30",
      "event_id": "ksr-google-gemini-omni-flash-preview-2026-09-30",
      "title": "Gemini Omni Flash Preview earliest shutdown: October 22, 2026",
      "url": "https://kingy.ai/ai-launch-tracker/gemini-omni-flash-preview-shutdown-september-30-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/gemini-omni-flash-preview-shutdown-september-30-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/gemini-omni-flash-preview-shutdown-september-30-2026/",
      "vendor": "Google",
      "product": "Gemini API",
      "model_version": "",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "gemini-omni-flash-preview",
      "affected_audience": "Developers whose Gemini API integrations call gemini-omni-flash-preview.",
      "region": "Gemini API; no regional exception documented",
      "announcement_date": "2026-08-27",
      "announced_at": "2026-08-27",
      "effective_date": "",
      "effective_at": "",
      "migration_deadline": "2026-10-22",
      "deadline_at": "2026-10-22",
      "previous_status": "Before 2026-09-30: Scheduled for shutdown on September 30, 2026.",
      "new_status": "Earliest possible shutdown October 22, 2026; runtime availability unconfirmed",
      "previous": {
        "status": "Before 2026-09-30: Scheduled for shutdown on September 30, 2026."
      },
      "new": {
        "status": "Earliest possible shutdown October 22, 2026; runtime availability unconfirmed"
      },
      "required_action": "Review remaining gemini-omni-flash-preview use and validate gemini-omni-1.1-flash before the currently documented earliest shutdown date. Preserve the historical September 30 observation and do not infer account access or runtime availability.",
      "recommended_action": "Review remaining gemini-omni-flash-preview use and validate gemini-omni-1.1-flash before the currently documented earliest shutdown date. Preserve the historical September 30 observation and do not infer account access or runtime availability.",
      "migration_path": "gemini-omni-1.1-flash",
      "recommended_alternative": "gemini-omni-1.1-flash",
      "access_regional_impact": "The current earliest possible shutdown is October 22, 2026. Account access and current service availability remain untested and unconfirmed.",
      "migration_impact": "The current earliest possible shutdown is October 22, 2026. Account access and current service availability remain untested and unconfirmed.",
      "official_source": "https://ai.google.dev/gemini-api/docs/deprecations",
      "official_sources": [
        "https://ai.google.dev/gemini-api/docs/deprecations",
        "https://ai.google.dev/gemini-api/docs/changelog"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/changelog"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-08-20",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [
        "2026-09-21: Corrected the documented notice date from August 20 to August 27 using Google’s dated changelog entry. The former August 20 value was reused by the builder for announcement, effective and first-detected dates; its provenance was not established. The independent effective date and actual Kingy first-detection date remain unknown. August 20 is retained only as unverified legacy detection history. September 30 remains the shutdown deadline.",
        "2026-10-01 source review: Keep August 27 notice, unverified detection history and September 30 historical deadline. Disclose current-source ambiguity rather than assert shutdown. Previous guidance: Google’s August 27, 2026 notice schedules gemini-omni-flash-preview for shutdown on September 30, 2026 and names gemini-omni-1.1-flash as the replacement. Action: Replace gemini-omni-flash-preview with gemini-omni-1.1-flash and regression-test multimodal behavior, tool use, latency and cost before September 30.",
        "2026-10-07 scoped correction: Google’s current table gives October 22, 2026 as the earliest possible shutdown for gemini-omni-flash-preview and recommends gemini-omni-1.1-flash. The August 27 notice calls September 30 deprecation. The September 27 observation of a September 30 shutdown deadline is retained as historical evidence; runtime availability remains untested and unconfirmed."
      ],
      "superseded_state": "active",
      "source_summary": "Google’s current deprecation table lists October 22, 2026 as the earliest possible shutdown date for gemini-omni-flash-preview, with gemini-omni-1.1-flash as replacement. The August 27 release note describes September 30 as deprecation. The historical September 30 shutdown observation is retained; current runtime availability remains untested.",
      "lifecycle_state": "deadline_passed",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 15839,
      "time_points": [
        {
          "date": "2026-08-27",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date",
          "meaning": "Documented official notice date; not established as first-ever announcement."
        },
        {
          "date": "2026-10-22",
          "kind": "migration_deadline",
          "status": "confirmed",
          "precision": "date",
          "meaning": "Current documented earliest possible shutdown; historical September 30 observation retained in correction history."
        }
      ],
      "revision_hash": "sha256:8a7a0e7b4a3d255f2c7f55977a8a6cae8ca8d7292119c144029cb3a2e3d31b83",
      "revision_number": 7,
      "record_url": "https://kingy.ai/ai-launch-tracker/gemini-omni-flash-preview-shutdown-september-30-2026/",
      "first_detected_status": "unverified",
      "effective_date_status": "unknown",
      "date_provenance": {
        "documentedNotice": {
          "date": "2026-08-27",
          "status": "confirmed",
          "source": "https://ai.google.dev/gemini-api/docs/changelog#08-27-2026",
          "meaning": "Date on the documented official notice; earliest-ever announcement is not established."
        },
        "independentEffectiveDate": {
          "date": null,
          "status": "unknown"
        },
        "firstDetected": {
          "date": null,
          "status": "unknown",
          "retainedLegacyValue": "2026-08-20",
          "retainedLegacyValueStatus": "unverified",
          "reason": "The historical builder copied its announcement value into first_detected; no independent detection evidence establishes this date."
        }
      },
      "rss_guid": "ksr-google-gemini-omni-flash-preview-2026-09-30@kingy.ai",
      "kingy_verdict": "Google’s current deprecation table lists October 22, 2026 as the earliest possible shutdown date for gemini-omni-flash-preview, with gemini-omni-1.1-flash as replacement. The August 27 release note describes September 30 as deprecation. The historical September 30 shutdown observation is retained; current runtime availability remains untested. Review remaining gemini-omni-flash-preview use and validate gemini-omni-1.1-flash before the currently documented earliest shutdown date; preserve the historical September 30 observation and do not infer account access or runtime availability."
    },
    {
      "access_regional_impact": "The official shutdown deadline passed, but the current service state remains unconfirmed; production dependence is unsafe.",
      "admission_state": "admitted",
      "affected_audience": "Developers and robotics teams whose Gemini API integrations call gemini-robotics-er-1.6-preview.",
      "affected_components": "gemini-robotics-er-1.6-preview, Gemini API robotics integrations",
      "affected_subjects": [
        {
          "affectedRange": null,
          "ecosystem": null,
          "entityId": "google:model:gemini-robotics-er-1-6-preview",
          "exclusions": [
            "downstream physical robotics systems"
          ],
          "identifiers": [
            "gemini-robotics-er-1.6-preview"
          ],
          "regions": [
            "Gemini API; no regional exception documented"
          ],
          "surface": "api"
        }
      ],
      "announced_at": "2026-07-30",
      "announcement_date": "2026-07-30",
      "article_url": "https://kingy.ai/ai-launch-tracker/google-retires-gemini-robotics-er-1-6-preview-on-august-31/",
      "breakage_mode": "availability_loss",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/google-retires-gemini-robotics-er-1-6-preview-on-august-31/",
      "change_type": "retirement",
      "correction_history": [
        "2026-09-04: The August 31 deadline passed; official sources still list the deadline and replacement but do not confirm current service state.",
        "2026-09-21: Typed status and duplicated detection/accepted-claim values assert shutdown while the corrected public text says service state is unconfirmed."
      ],
      "correction_of_event_id": "",
      "deadline_at": "2026-08-31",
      "detection_signatures": [
        {
          "expectedAfter": {
            "status": "Deadline passed; service state unconfirmed",
            "access": "The August 31 deadline has passed; current service availability is not confirmed by the official sources."
          },
          "expectedBefore": {
            "access": "The Gemini Robotics ER 1.6 preview endpoint remains available before the shutdown date.",
            "status": "Preview and deprecated"
          },
          "kind": "model_id",
          "phase": "exposure",
          "selector": "gemini-robotics-er-1.6-preview",
          "sourceClaimId": "claim:ksr-google-gemini-robotics-er-1-6-2026-08-31:consequence"
        }
      ],
      "effective_at": "2026-07-30",
      "effective_date": "2026-07-30",
      "entity_id": "kingy:product:gemini-api",
      "entity_stable_id": "",
      "entity_url": "https://kingy.ai/ai-tools/gemini-api/",
      "event_id": "ksr-google-gemini-robotics-er-1-6-2026-08-31",
      "event_type": "retirement",
      "evidence_strength": "strong",
      "expires_at": "",
      "expiry_date": "",
      "first_detected": "2026-07-30",
      "id": 927442,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "lifecycle_state": "completed",
      "materiality": "high",
      "migration_deadline": "2026-08-31",
      "migration_impact": "The official shutdown deadline passed, but the current service state remains unconfirmed; production dependence is unsafe.",
      "migration_path": "Update integrations to gemini-robotics-er-2-preview, review the current Robotics ER documentation, and regression-test spatial reasoning, orchestration, media inputs and physical-action safeguards before production cutover.",
      "model_relationship_ids": "",
      "model_version": "gemini-robotics-er-1.6-preview",
      "modified": "2026-08-23T07:27:01+00:00",
      "modified_at": "2026-08-23T07:27:01+00:00",
      "new": {
        "status": "Deadline passed; service state unconfirmed",
        "access": "The August 31 deadline has passed; current service availability is not confirmed by the official sources."
      },
      "new_access": "The August 31 deadline has passed; current service availability is not confirmed by the official sources.",
      "new_limit": "",
      "new_price": "",
      "new_status": "Deadline passed; service state unconfirmed",
      "observed_at": "2026-07-30T00:00:00Z",
      "official_source": "https://ai.google.dev/gemini-api/docs/changelog",
      "official_sources": [
        "https://ai.google.dev/gemini-api/docs/changelog",
        "https://ai.google.dev/gemini-api/docs/deprecations",
        "https://ai.google.dev/gemini-api/docs/models"
      ],
      "previous": {
        "access": "The Gemini Robotics ER 1.6 preview endpoint remains available before the shutdown date.",
        "status": "Preview and deprecated"
      },
      "previous_access": "The Gemini Robotics ER 1.6 preview endpoint remains available before the shutdown date.",
      "previous_limit": "",
      "previous_price": "",
      "previous_status": "Preview and deprecated",
      "product": "Gemini API",
      "product_relationship_id": "913045",
      "publication_eligible": true,
      "published": "2026-08-01T15:39:58+00:00",
      "published_at": "2026-08-01T15:39:58+00:00",
      "recommended_action": "Treat the endpoint as unsupported, migrate to gemini-robotics-er-2-preview, and verify production behavior without assuming the 1.6 endpoint is available or unavailable.",
      "recommended_alternative": "gemini-robotics-er-2-preview",
      "record_class": "operational_breakage",
      "record_url": "https://kingy.ai/ai-launch-tracker/google-retires-gemini-robotics-er-1-6-preview-on-august-31/",
      "region": "Gemini API; no regional exception documented",
      "relationships": {
        "models": [],
        "product": {
          "id": 913045,
          "name": "Gemini API",
          "url": "https://kingy.ai/ai-tools/gemini-api/"
        },
        "vendor": {
          "id": 913030,
          "name": "Google",
          "url": "https://kingy.ai/ai-companies/google/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_tested",
      "required_action": "Treat the endpoint as unsupported, migrate to gemini-robotics-er-2-preview, and verify production behavior without assuming the 1.6 endpoint is available or unavailable.",
      "revision_hash": "sha256:13d9fbb160b2c241e955c97c568859880e59adbeebb3516b76ac79d647845553",
      "revision_number": 6,
      "schema_version": "1.1-staging-compat",
      "severity": "high",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/changelog"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/deprecations"
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      "new": {
        "access": "Lower promotional API pricing is available at least through November 21, 2026.",
        "price": "Standard processing, per million tokens in USD: $4 uncached input and $20 output for prompts up to 272K input tokens; above 272K input tokens, $8 input and $30 output apply to the full request.",
        "status": "Promotional pricing in effect"
      },
      "new_access": "Lower promotional API pricing is available at least through November 21, 2026.",
      "new_limit": "",
      "new_price": "Standard processing, per million tokens in USD: $4 uncached input and $20 output for prompts up to 272K input tokens; above 272K input tokens, $8 input and $30 output apply to the full request.",
      "new_status": "Promotional pricing in effect",
      "observed_at": "2026-08-21T00:00:00Z",
      "official_source": "https://developers.openai.com/api/docs/changelog",
      "official_sources": [
        "https://developers.openai.com/api/docs/changelog",
        "https://developers.openai.com/api/docs/models/gpt-5.6-sol",
        "https://developers.openai.com/api/docs/pricing"
      ],
      "previous": {
        "access": "Earlier GPT-5.6 Sol API pricing applied before August 21.",
        "price": "OpenAI states the new rate is 20% lower for input and 33% lower for output",
        "status": "Earlier pricing"
      },
      "previous_access": "Earlier GPT-5.6 Sol API pricing applied before August 21.",
      "previous_limit": "",
      "previous_price": "OpenAI states the new rate is 20% lower for input and 33% lower for output",
      "previous_status": "Earlier pricing",
      "product": "OpenAI API",
      "product_relationship_id": "912981",
      "publication_eligible": true,
      "published": "2026-08-23T07:27:03+00:00",
      "published_at": "2026-08-23T07:27:03+00:00",
      "recommended_action": "Scope cost estimates by service tier, input length and cache use. Keep a contingency for later price changes, but do not treat November 21, 2026 as an announced expiry: the promotional guarantee runs at least through that date.",
      "recommended_alternative": "Retain workload-based model routing instead of selecting solely on promotional price",
      "record_class": "operational_breakage",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-cuts-gpt-5-6-sol-api-pricing-on-august-21/",
      "region": "OpenAI API; pricing eligibility and account terms apply",
      "relationships": {
        "models": [],
        "product": {
          "id": 912981,
          "name": "OpenAI API",
          "url": "https://kingy.ai/ai-tools/openai-api/"
        },
        "vendor": {
          "id": 912958,
          "name": "OpenAI",
          "url": "https://kingy.ai/ai-companies/openai/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_tested",
      "required_action": "Scope cost estimates by service tier, input length and cache use. Keep a contingency for later price changes, but do not treat November 21, 2026 as an announced expiry: the promotional guarantee runs at least through that date.",
      "revision_hash": "sha256:449c74433b9647b5d6f64547eabb5036c70b45b88a78a5fa6693792b78d5cb3c",
      "revision_number": 6,
      "schema_version": "1.1-staging-compat",
      "severity": "high",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/changelog"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/models/gpt-5.6-sol"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/pricing"
        }
      ],
      "source_summary": "OpenAI lowered GPT-5.6 Sol Standard pricing on August 21, 2026. For prompts up to 272K input tokens, the uncached input/output rates are $4/$20 per million tokens; longer prompts cost $8/$30 for the full request. The promotional guarantee extends at least through November 21.",
      "stable_id": "ksr-openai-gpt-5-6-sol-price-2026-08-21",
      "successor_event_id": "",
      "superseded_by": "",
      "superseded_by_event_id": "",
      "superseded_state": "active",
      "time_points": [
        {
          "date": "2026-08-21",
          "kind": "announced",
          "precision": "date",
          "sourceClaimId": "claim:ksr-openai-gpt-5-6-sol-price-2026-08-21:time-announced",
          "status": "confirmed"
        },
        {
          "date": "2026-08-21",
          "kind": "effective",
          "precision": "date",
          "sourceClaimId": "claim:ksr-openai-gpt-5-6-sol-price-2026-08-21:time-effective",
          "status": "confirmed"
        },
        {
          "date": "2026-11-21",
          "kind": "guaranteed_through",
          "precision": "date",
          "sourceClaimId": "claim:ksr-openai-gpt-5-6-sol-price-2026-08-21:time-guarantee",
          "status": "confirmed"
        }
      ],
      "title": "OpenAI cuts GPT-5.6 Sol API pricing on August 21",
      "url": "https://kingy.ai/ai-launch-tracker/openai-cuts-gpt-5-6-sol-api-pricing-on-august-21/",
      "vendor": "OpenAI",
      "vendor_relationship_id": "912958",
      "visibility": "staging",
      "rss_guid": "ksr-openai-gpt-5-6-sol-price-2026-08-21@kingy.ai",
      "kingy_verdict": "OpenAI lowered GPT-5.6 Sol Standard pricing on August 21, 2026. For prompts up to 272K input tokens, the uncached input/output rates are $4/$20 per million tokens; longer prompts cost $8/$30 for the full request. Scope cost estimates by service tier, input length and cache use. Keep a contingency for later price changes, but do not treat November 21, 2026 as an announced expiry: the promotional guarantee runs at least through that date."
    },
    {
      "access_regional_impact": "The removal applies to the OpenAI API; the official notice lists no regional exception.",
      "admission_state": "admitted",
      "affected_audience": "API developers calling the listed GPT Image model IDs.",
      "affected_components": "gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest",
      "affected_subjects": [
        {
          "affectedRange": null,
          "ecosystem": null,
          "entityId": "kingy:product:openai-api",
          "exclusions": [
            "unrelated image aliases",
            "partner APIs"
          ],
          "identifiers": [
            "gpt-image-1-mini",
            "gpt-image-1.5",
            "chatgpt-image-latest"
          ],
          "regions": [
            "OpenAI API; no regional exception documented"
          ],
          "surface": "api"
        }
      ],
      "announced_at": "2026-06-02",
      "announcement_date": "2026-06-02",
      "article_url": "https://kingy.ai/ai-launch-tracker/older-openai-gpt-image-models-will-leave-the-api-december-1/",
      "breakage_mode": "availability_loss",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/older-openai-gpt-image-models-will-leave-the-api-december-1/",
      "change_type": "retirement",
      "correction_history": [
        "2026-09-12: Rechecked the three exact model IDs and December 1 deadline. Replaced premature Retired status with scheduled removal, clarified the exact replacement endpoint scope, and removed an unsupported no-migration-fee claim.",
        "2026-09-21: The phrase \"not Responses\" conflates direct model endpoint support with the Responses image-generation tool.",
        "2026-10-01 source review: Current HTML and Markdown tables now name Image 2.5 Sunburst/Flare rather than GPT Image 2; exact retiring IDs and December 1 remain unchanged. Previous guidance: OpenAI schedules gpt-image-1-mini, gpt-image-1.5 and chatgpt-image-latest for API removal on December 1, 2026. Its deprecation table names gpt-image-2 as the replacement. Action: Inventory the three exact retiring IDs. Test gpt-image-2 on its supported endpoint and parameters, then compare representative generation, editing and cost before December 1."
      ],
      "correction_of_event_id": "",
      "deadline_at": "2026-12-01",
      "detection_signatures": [
        {
          "expectedAfter": {
            "access": "The three listed model IDs are scheduled to leave the API on December 1, 2026.",
            "status": "Deprecated; API removal scheduled"
          },
          "expectedBefore": {
            "access": "Deprecated model IDs remain callable before shutdown",
            "status": "Deprecated"
          },
          "kind": "model_id",
          "phase": "exposure",
          "selector": "gpt-image-1-mini|gpt-image-1.5|chatgpt-image-latest",
          "sourceClaimId": "claim:ksr-openai-gpt-image-2026-12-01:consequence"
        }
      ],
      "effective_at": "2026-06-02",
      "effective_date": "2026-06-02",
      "entity_id": "kingy:product:openai-api",
      "entity_stable_id": "",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "event_id": "ksr-openai-gpt-image-2026-12-01",
      "event_type": "retirement",
      "evidence_strength": "strong",
      "expires_at": "",
      "expiry_date": "",
      "first_detected": "2026-06-02",
      "id": 925933,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "lifecycle_state": "upcoming",
      "materiality": "high",
      "migration_deadline": "2026-12-01",
      "migration_impact": "The removal applies to the OpenAI API; the official notice lists no regional exception.",
      "migration_path": "Evaluate gpt-image-2.5-sunburst or gpt-image-2.5-flare for the affected workflow. Their September 8 launch documents Images API and Responses image-generation tool support. Validate the exact model, endpoint, parameters, outputs and costs before migration.",
      "model_relationship_ids": "916001,916000",
      "model_version": "gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest",
      "modified": "2026-09-12T19:41:22Z",
      "modified_at": "2026-09-12T19:41:22Z",
      "new": {
        "access": "The three listed model IDs are scheduled to leave the API on December 1, 2026.",
        "status": "Deprecated; API removal scheduled"
      },
      "new_access": "The three listed model IDs are scheduled to leave the API on December 1, 2026.",
      "new_limit": "",
      "new_price": "",
      "new_status": "Deprecated; API removal scheduled",
      "observed_at": "2026-06-02T00:00:00Z",
      "official_source": "https://developers.openai.com/api/docs/changelog",
      "official_sources": [
        "https://developers.openai.com/api/docs/changelog",
        "https://developers.openai.com/api/docs/deprecations",
        "https://developers.openai.com/api/docs/models/gpt-image-2"
      ],
      "previous": {
        "access": "Deprecated model IDs remain callable before shutdown",
        "status": "Deprecated"
      },
      "previous_access": "Deprecated model IDs remain callable before shutdown",
      "previous_limit": "",
      "previous_price": "",
      "previous_status": "Deprecated",
      "product": "OpenAI API",
      "product_relationship_id": "912981",
      "publication_eligible": true,
      "published": "2026-07-26T20:47:39+00:00",
      "published_at": "2026-07-26T20:47:39+00:00",
      "recommended_action": "Inventory the three retiring IDs and test the currently named Sunburst or Flare replacement before December 1. Retain the earlier GPT Image 2 guidance in correction history; do not transfer version-specific settings.",
      "recommended_alternative": "gpt-image-2.5-sunburst or gpt-image-2.5-flare; validate the exact workflow.",
      "record_class": "operational_breakage",
      "record_url": "https://kingy.ai/ai-launch-tracker/older-openai-gpt-image-models-will-leave-the-api-december-1/",
      "region": "OpenAI API; no regional exception documented",
      "relationships": {
        "models": [
          {
            "id": 916001,
            "name": "GPT Image 1 mini",
            "url": "https://kingy.ai/ai-models/gpt-image-1-mini/"
          },
          {
            "id": 916000,
            "name": "GPT Image 1.5",
            "url": "https://kingy.ai/ai-models/gpt-image-1-5/"
          }
        ],
        "product": {
          "id": 912981,
          "name": "OpenAI API",
          "url": "https://kingy.ai/ai-tools/openai-api/"
        },
        "vendor": {
          "id": 912958,
          "name": "OpenAI",
          "url": "https://kingy.ai/ai-companies/openai/"
        }
      },
      "replacement_event_id": "",
      "reproduction_status": "not_tested",
      "required_action": "Inventory the three retiring IDs and test the currently named Sunburst or Flare replacement before December 1. Retain the earlier GPT Image 2 guidance in correction history; do not transfer version-specific settings.",
      "revision_hash": "sha256:11add4719eaf777cf5babd2b64a1be4a2ce5884051d0cc59b2bb5a446034ff84",
      "revision_number": 6,
      "schema_version": "1.1-staging-compat",
      "severity": "high",
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/changelog"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/models/gpt-image-2"
        }
      ],
      "source_summary": "OpenAI schedules gpt-image-1-mini, gpt-image-1.5 and chatgpt-image-latest for API removal on December 1, 2026. Its current deprecation table recommends gpt-image-2.5-sunburst or gpt-image-2.5-flare.",
      "stable_id": "ksr-openai-gpt-image-2026-12-01",
      "successor_event_id": "",
      "superseded_by": "",
      "superseded_by_event_id": "",
      "superseded_state": "active",
      "time_points": [
        {
          "date": "2026-06-02",
          "kind": "announced",
          "precision": "date",
          "sourceClaimId": "claim:ksr-openai-gpt-image-2026-12-01:time-announced",
          "status": "confirmed"
        },
        {
          "date": "2026-06-02",
          "kind": "effective",
          "precision": "date",
          "sourceClaimId": "claim:ksr-openai-gpt-image-2026-12-01:time-effective",
          "status": "confirmed"
        },
        {
          "date": "2026-12-01",
          "kind": "migration_deadline",
          "precision": "date",
          "sourceClaimId": "claim:ksr-openai-gpt-image-2026-12-01:time-deadline",
          "status": "confirmed"
        }
      ],
      "title": "Three GPT Image API models are scheduled to retire December 1, 2026",
      "url": "https://kingy.ai/ai-launch-tracker/older-openai-gpt-image-models-will-leave-the-api-december-1/",
      "vendor": "OpenAI",
      "vendor_relationship_id": "912958",
      "visibility": "staging",
      "review_scope": "Reviewed the three exact GPT Image model IDs and December 1 shutdown in the deprecation notice, the complete GPT Image 2 model record, and the relevant current image-guide sections. The general guide now leads with Image 2.5 examples; no endpoint/parameter parity or benchmark outcome is assumed.",
      "reviewed_at": "2026-09-12T19:10:54.703457+00:00",
      "ics_sequence": 2,
      "ics_last_modified": "2026-09-12T19:37:29Z",
      "source_checks": [
        {
          "url": "https://developers.openai.com/api/docs/deprecations",
          "status": "verified",
          "checked_at": "2026-09-12",
          "note": "Reviewed the three exact GPT Image model IDs and December 1 shutdown in the deprecation notice, the complete GPT Image 2 model record, and the relevant current image-guide sections. The general guide now leads with Image 2.5 examples; no endpoint/parameter parity or benchmark outcome is assumed."
        },
        {
          "url": "https://developers.openai.com/api/docs/models/gpt-image-2",
          "status": "verified",
          "checked_at": "2026-09-12",
          "note": "Reviewed the three exact GPT Image model IDs and December 1 shutdown in the deprecation notice, the complete GPT Image 2 model record, and the relevant current image-guide sections. The general guide now leads with Image 2.5 examples; no endpoint/parameter parity or benchmark outcome is assumed."
        },
        {
          "url": "https://developers.openai.com/api/docs/guides/image-generation",
          "status": "verified",
          "checked_at": "2026-09-12",
          "note": "Reviewed the three exact GPT Image model IDs and December 1 shutdown in the deprecation notice, the complete GPT Image 2 model record, and the relevant current image-guide sections. The general guide now leads with Image 2.5 examples; no endpoint/parameter parity or benchmark outcome is assumed."
        }
      ],
      "pricing": "Review the current price of the chosen replacement and measure representative jobs. This lifecycle record does not establish workload cost or promise a cost-neutral migration.",
      "rss_guid": "ksr-openai-gpt-image-2026-12-01@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-openai-transcription-models-2027-02-26",
      "event_id": "ksr-openai-transcription-models-2027-02-26",
      "title": "OpenAI transcription model shutdown deadline: February 26, 2027",
      "url": "https://kingy.ai/ai-launch-tracker/openai-transcription-models-api-shutdown-february-26-2027/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-transcription-models-api-shutdown-february-26-2027/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-transcription-models-api-shutdown-february-26-2027/",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe, gpt-4o-transcribe-diarize",
      "affected_audience": "Developers whose OpenAI API integrations use the four retiring transcription model IDs.",
      "region": "OpenAI API; no regional exception documented",
      "announcement_date": "2026-08-26",
      "announced_at": "2026-08-26",
      "effective_date": "2026-08-26",
      "effective_at": "2026-08-26",
      "migration_deadline": "2027-02-26",
      "deadline_at": "2027-02-26",
      "previous_status": "The four transcription model IDs remain available during the deprecation window.",
      "new_status": "Scheduled for API removal on February 26, 2027.",
      "previous": {
        "status": "The four transcription model IDs remain available during the deprecation window."
      },
      "new": {
        "status": "Scheduled for API removal on February 26, 2027."
      },
      "required_action": "Migrate transcription workloads to gpt-live-transcribe or gpt-transcribe and regression-test accuracy, diarization, latency and cost before February 26, 2027.",
      "recommended_action": "Migrate transcription workloads to gpt-live-transcribe or gpt-transcribe and regression-test accuracy, diarization, latency and cost before February 26, 2027.",
      "migration_path": "gpt-live-transcribe or gpt-transcribe",
      "recommended_alternative": "gpt-live-transcribe or gpt-transcribe",
      "access_regional_impact": "API requests using the four retiring transcription model IDs will stop working after the scheduled removal.",
      "migration_impact": "API requests using the four retiring transcription model IDs will stop working after the scheduled removal.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/deprecations"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-08-26",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [],
      "superseded_state": "active",
      "source_summary": "OpenAI will remove whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe and gpt-4o-transcribe-diarize from the API on February 26, 2027.",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 926752,
      "time_points": [
        {
          "date": "2026-08-26",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "date": "2027-02-26",
          "kind": "migration_deadline",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:9509c69227f328657795123b3889f2fc3e5e917548b152db2254a2a93be148ac",
      "revision_number": 5,
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-transcription-models-api-shutdown-february-26-2027/",
      "rss_guid": "ksr-openai-transcription-models-2027-02-26@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-openai-sora-videos-api-2026-09-24",
      "event_id": "ksr-openai-sora-videos-api-2026-09-24",
      "title": "Sora and Videos API deadline passed; service state unconfirmed",
      "url": "https://kingy.ai/ai-launch-tracker/openai-sora-videos-api-shutdown-september-24-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-sora-videos-api-shutdown-september-24-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-sora-videos-api-shutdown-september-24-2026/",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "Videos API, sora-2, sora-2-pro, sora-2-2025-10-06, sora-2-2025-12-08, sora-2-pro-2025-10-06",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "Videos API, sora-2, sora-2-pro, sora-2-2025-10-06, sora-2-2025-12-08, sora-2-pro-2025-10-06",
      "affected_audience": "Developers whose OpenAI API integrations depend on these exact retiring IDs or API surface.",
      "region": "OpenAI API; no regional exception documented",
      "announcement_date": "2026-03-24",
      "announced_at": "2026-03-24",
      "effective_date": "2026-03-24",
      "effective_at": "2026-03-24",
      "migration_deadline": "2026-09-24",
      "deadline_at": "2026-09-24",
      "previous_status": "Before September 24: deprecated, with removal scheduled for September 24, 2026.",
      "new_status": "Deadline passed; service state unconfirmed",
      "previous": {
        "status": "Before September 24: deprecated, with removal scheduled for September 24, 2026."
      },
      "new": {
        "status": "Deadline passed; service state unconfirmed"
      },
      "required_action": "Check integrations using the exact listed IDs and Videos API, prepare service continuity, and verify current behavior before treating removal as confirmed. OpenAI names no replacement.",
      "recommended_action": "Check integrations using the exact listed IDs and Videos API, prepare service continuity, and verify current behavior before treating removal as confirmed. OpenAI names no replacement.",
      "migration_path": "No replacement named in the official table. Plan service continuity for the exact affected API surface.",
      "recommended_alternative": "No replacement named",
      "access_regional_impact": "The September 24, 2026 shutdown deadline has passed. Current API availability was not tested and remains unconfirmed.",
      "migration_impact": "The September 24, 2026 shutdown deadline has passed. Current API availability was not tested and remains unconfirmed.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/deprecations"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-09-21",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [
        "2026-09-27: Changed the September 24 deadline from upcoming to passed. The prior record described a scheduled removal and advised acting before September 24. OpenAI still lists the same date; current service availability remains unconfirmed."
      ],
      "superseded_state": "active",
      "source_summary": "OpenAI lists September 24, 2026 as the shutdown date for the Videos API and the five named Sora IDs. That date has passed; current service availability remains unconfirmed, and no replacement is named.",
      "lifecycle_state": "completed",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 4634,
      "time_points": [
        {
          "date": "2026-03-24",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "date": "2026-09-24",
          "kind": "migration_deadline",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:9e5f0262f86777a88f31af1b63868cac5dbed36143fd559bb1360a1fcae3a7a2",
      "revision_number": 4,
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-sora-videos-api-shutdown-september-24-2026/",
      "rss_guid": "ksr-openai-sora-videos-api-2026-09-24@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-openai-legacy-completions-2026-09-28",
      "event_id": "ksr-openai-legacy-completions-2026-09-28",
      "title": "Four legacy OpenAI model deadlines passed September 28; service state unconfirmed",
      "url": "https://kingy.ai/ai-launch-tracker/openai-legacy-models-shutdown-september-28-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-legacy-models-shutdown-september-28-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-legacy-models-shutdown-september-28-2026/",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "gpt-3.5-turbo-instruct, babbage-002, davinci-002, gpt-3.5-turbo-1106",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "gpt-3.5-turbo-instruct, babbage-002, davinci-002, gpt-3.5-turbo-1106",
      "affected_audience": "Developers whose OpenAI API integrations depend on these exact retiring IDs or API surface.",
      "region": "OpenAI API; no regional exception documented",
      "announcement_date": "2025-09-26",
      "announced_at": "2025-09-26",
      "effective_date": "2025-09-26",
      "effective_at": "2025-09-26",
      "migration_deadline": "2026-09-28",
      "deadline_at": "2026-09-28",
      "previous_status": "Before 2026-09-28: Scheduled for API removal on 2026-09-28.",
      "new_status": "Deadline passed; service state unconfirmed",
      "previous": {
        "status": "Before 2026-09-28: Scheduled for API removal on 2026-09-28."
      },
      "new": {
        "status": "Deadline passed; service state unconfirmed"
      },
      "required_action": "Check configuration for these four exact IDs. Validate the endpoint, request format, behavior and cost of a Terra migration. Do not assume drop-in compatibility with legacy Completions.",
      "recommended_action": "Check configuration for these four exact IDs. Validate the endpoint, request format, behavior and cost of a Terra migration. Do not assume drop-in compatibility with legacy Completions.",
      "migration_path": "gpt-5.6-terra; validate endpoint, request format, output behavior and cost before migration.",
      "recommended_alternative": "gpt-5.6-terra",
      "access_regional_impact": "The retained 2026-09-28 deadline has passed. Current service availability has not been tested and remains unconfirmed.",
      "migration_impact": "The retained 2026-09-28 deadline has passed. Current service availability has not been tested and remains unconfirmed.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/deprecations"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-09-21",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [
        "2026-10-01 source review: September 28 date passed. Preserve exact IDs/date/Terra replacement and runtime/endpoint caveats; remove stale upcoming language. Previous guidance: OpenAI’s deprecation table lists September 28 removal for these four exact IDs and names gpt-5.6-terra as the replacement. Action: Find these IDs in deployed configuration. Validate endpoint, request format, output behavior and cost for a Terra migration; do not treat it as a drop-in legacy Completions replacement."
      ],
      "superseded_state": "active",
      "source_summary": "OpenAI lists September 28, 2026 for removal of gpt-3.5-turbo-instruct, babbage-002, davinci-002 and gpt-3.5-turbo-1106, with gpt-5.6-terra as the replacement. The date has passed; current service availability has not been tested.",
      "lifecycle_state": "completed",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 4634,
      "time_points": [
        {
          "date": "2025-09-26",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "date": "2026-09-28",
          "kind": "migration_deadline",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:9eaf766335ea646657c4cc226db4131a3c0cd5aeaa25ebceb0d04bb8b84977be",
      "revision_number": 5,
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-legacy-models-shutdown-september-28-2026/",
      "rss_guid": "ksr-openai-legacy-completions-2026-09-28@kingy.ai",
      "kingy_verdict": "OpenAI lists September 28, 2026 for removal of gpt-3.5-turbo-instruct, babbage-002, davinci-002 and gpt-3.5-turbo-1106, with gpt-5.6-terra as the replacement. The date has passed; current service availability has not been tested. Check configuration for these four exact IDs. Validate the endpoint, request format, behavior and cost of a Terra migration; do not assume drop-in compatibility with legacy Completions."
    },
    {
      "id": 0,
      "stable_id": "ksr-openai-gpt-5-4-cyber-2026-10-01",
      "event_id": "ksr-openai-gpt-5-4-cyber-2026-10-01",
      "title": "OpenAI schedules GPT-5.4-Cyber API retirement for October 1",
      "url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-4-cyber-api-retirement-october-1-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-4-cyber-api-retirement-october-1-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-4-cyber-api-retirement-october-1-2026/",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "gpt-5.4-cyber",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "gpt-5.4-cyber",
      "affected_audience": "OpenAI API teams using the exact gpt-5.4-cyber model ID for authorized cybersecurity work.",
      "region": "OpenAI API; no regional exception documented",
      "announcement_date": "2026-09-11",
      "announced_at": "2026-09-11",
      "effective_date": "",
      "effective_at": "",
      "migration_deadline": "2026-10-01",
      "deadline_at": "2026-10-01",
      "previous_status": "Deprecated; the listed shutdown date has not yet passed.",
      "new_status": "Scheduled for retirement on 2026-10-01.",
      "previous": {
        "status": "Deprecated; the listed shutdown date has not yet passed."
      },
      "new": {
        "status": "Scheduled for retirement on 2026-10-01."
      },
      "required_action": "Review gpt-5.4-cyber use against the October 1 deadline. Confirm an available authorized replacement and validate it. No exact shutdown time or account entitlement has been established.",
      "recommended_action": "Review gpt-5.4-cyber use against the October 1 deadline. Confirm an available authorized replacement and validate it. No exact shutdown time or account entitlement has been established.",
      "migration_path": "Use the most capable cyber model available to your organization. Confirm model access, approval, provisioning and supported API surface, then validate authorized workloads before cutover.",
      "recommended_alternative": "The most capable cyber model available to your organization; confirm access and supported API surface.",
      "access_regional_impact": "API access to the exact gpt-5.4-cyber ID is scheduled to end October 1. Approved access to gpt-5.6-cyber cannot be assumed.",
      "migration_impact": "API access to the exact gpt-5.4-cyber ID is scheduled to end October 1. Approved access to gpt-5.6-cyber cannot be assumed.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations",
        "https://developers.openai.com/api/docs/models/gpt-5.6-cyber"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://developers.openai.com/api/docs/models/gpt-5.6-cyber"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-09-21",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [
        "2026-10-01 source review: Current HTML and Markdown deprecation tables changed replacement guidance to availability-scoped cyber guidance. Keep October 1 date and approval/provisioning holds; do not claim the date-only deadline has passed today. Previous guidance: OpenAI schedules gpt-5.4-cyber for API removal October 1 and names gpt-5.6-cyber as the replacement. Access to the replacement requires separate approval and provisioning. Action: Inventory exact gpt-5.4-cyber use. Confirm approved access to gpt-5.6-cyber and test authorized workloads before switching."
      ],
      "superseded_state": "active",
      "source_summary": "OpenAI lists October 1, 2026 for gpt-5.4-cyber API removal and now recommends the most capable cyber model available to the customer. GPT-5.6 Cyber independently requires separate approval and provisioning; it is no longer specifically named by this deprecation table.",
      "lifecycle_state": "deadline_passed",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 4634,
      "time_points": [
        {
          "date": "2026-09-11",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "date": "2026-10-01",
          "kind": "migration_deadline",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:4a2b699e39a3f1defc748048539f6c7db832ae35eb17f6bb6c4525b884bc704c",
      "revision_number": 5,
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-4-cyber-api-retirement-october-1-2026/",
      "kingy_verdict": "OpenAI lists October 1, 2026 for gpt-5.4-cyber API removal and now recommends the most capable cyber model available to the customer. GPT-5.6 Cyber independently requires separate approval and provisioning; it is no longer specifically named by this deprecation table. Review gpt-5.4-cyber use against the passed October 1 deadline, then confirm an available authorized replacement and validate it. Current runtime availability, an exact shutdown time and account entitlement remain unconfirmed.",
      "announcement_date_basis": "official_notice_dated",
      "rss_guid": "ksr-openai-gpt-5-4-cyber-2026-10-01@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-google-gemini-2-5-flash-image-2026-10-02",
      "event_id": "ksr-google-gemini-2-5-flash-image-2026-10-02",
      "title": "Google lists March 15, 2027 as earliest possible shutdown for Gemini 2.5 Flash Image",
      "url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-flash-image-retirement-october-2-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-flash-image-retirement-october-2-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-flash-image-retirement-october-2-2026/",
      "vendor": "Google",
      "product": "Gemini API",
      "model_version": "gemini-2.5-flash-image",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "gemini-2.5-flash-image",
      "affected_audience": "Gemini API developers whose image-generation integrations call the exact gemini-2.5-flash-image ID.",
      "region": "Gemini API image model; no project-specific access or regional exception verified",
      "announcement_date": "",
      "announced_at": "",
      "effective_date": "",
      "effective_at": "",
      "migration_deadline": "2027-03-15",
      "deadline_at": "2027-03-15",
      "previous_status": "Deprecated; the listed shutdown date has not yet passed.",
      "new_status": "Google lists March 15, 2027 as the earliest possible shutdown date; actual runtime state is unconfirmed.",
      "previous": {
        "status": "Deprecated; the listed shutdown date has not yet passed."
      },
      "new": {
        "status": "Google lists March 15, 2027 as the earliest possible shutdown date; actual runtime state is unconfirmed."
      },
      "required_action": "Inventory calls to gemini-2.5-flash-image and plan migration before the listed earliest possible shutdown date, March 15, 2027. Validate Google’s recommended gemini-3.1-flash-lite-image for the affected project, outputs, SDK and pricing before switching callers.",
      "recommended_action": "Inventory calls to gemini-2.5-flash-image and plan migration before the listed earliest possible shutdown date, March 15, 2027. Validate Google’s recommended gemini-3.1-flash-lite-image for the affected project, outputs, SDK and pricing before switching callers.",
      "migration_path": "Google now recommends gemini-3.1-flash-lite-image for this exact model. Validate project access, image-output requirements, request compatibility and applicable pricing; the recommendation does not establish migration readiness or runtime availability.",
      "recommended_alternative": "Google now recommends gemini-3.1-flash-lite-image for this exact model. Validate project access, image-output requirements, request compatibility and applicable pricing; the recommendation does not establish migration readiness or runtime availability.",
      "access_regional_impact": "Google’s current table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image. No exact shutdown time, project-specific access, regional exception or runtime state was verified.",
      "migration_impact": "Google’s current table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image. No exact shutdown time, project-specific access, regional exception or runtime state was verified.",
      "official_source": "https://ai.google.dev/gemini-api/docs/deprecations",
      "official_sources": [
        "https://ai.google.dev/gemini-api/docs/deprecations",
        "https://ai.google.dev/gemini-api/docs/pricing",
        "https://ai.google.dev/gemini-api/docs/models/gemini-2.5-flash-image",
        "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-image",
        "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-lite-image"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/pricing"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/models/gemini-2.5-flash-image"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-image"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-lite-image"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-09-21",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [
        "2026-10-06 scoped correction: A genuine source change was observed between the retained October 6 captures at 16:25:13Z and 18:30:15Z; this interval does not establish Google’s exact edit time. The table moved this exact image model from October 2, 2026 to March 15, 2027 (earliest possible) and changed the recommendation from gemini-nano-banana-2.1 to gemini-3.1-flash-lite-image. Older Kingy prose about a retired-preview replacement conflict remains historical evidence, not the current recommendation. No runtime or project access was tested. Retained typed subject holds about the October 2 date and retired-preview replacement are historical wording; their payloads remain unchanged. Current guidance is March 15, 2027 at the earliest, with gemini-3.1-flash-lite-image recommended. Admission and runtime holds remain."
      ],
      "superseded_state": "active",
      "source_summary": "Google’s current deprecation table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image and recommends gemini-3.1-flash-lite-image. The previously displayed October 2 date and replacement-conflict description are historical.",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 2406,
      "time_points": [
        {
          "date": "2027-03-15",
          "kind": "migration_deadline",
          "status": "listed_earliest",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:eb3556129ae37a8157c3a56dfd65ebbe83bffd3dc0ef12f06cb882f1aef2a414",
      "revision_number": 5,
      "record_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-flash-image-retirement-october-2-2026/",
      "kingy_verdict": "Use March 15, 2027 as Google’s listed earliest possible shutdown date for this exact image model. Validate the recommended gemini-3.1-flash-lite-image against your project before migration. The changed schedule does not establish current account access or successful runtime behavior.",
      "announcement_date_basis": "official_notice_undated",
      "rss_guid": "ksr-google-gemini-2-5-flash-image-2026-10-02@kingy.ai"
    },
    {
      "id": 0,
      "stable_id": "ksr-google-antigravity-05-2026-2026-10-05",
      "event_id": "ksr-google-antigravity-05-2026-2026-10-05",
      "title": "Antigravity May preview is scheduled to retire October 5",
      "url": "https://kingy.ai/ai-launch-tracker/antigravity-may-preview-retirement-october-5-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/antigravity-may-preview-retirement-october-5-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/antigravity-may-preview-retirement-october-5-2026/",
      "vendor": "Google",
      "product": "Gemini API",
      "model_version": "antigravity-preview-05-2026, antigravity-preview-09-2026",
      "change_type": "retirement",
      "event_type": "retirement",
      "severity": "high",
      "materiality": "high",
      "affected_components": "antigravity-preview-05-2026, antigravity-preview-09-2026",
      "affected_audience": "Gemini API Interactions clients using antigravity-preview-05-2026, especially local tool integrations and function_call parsers.",
      "region": "Gemini API managed agent; no regional exception documented",
      "announcement_date": "2026-09-17",
      "announced_at": "2026-09-17",
      "effective_date": "",
      "effective_at": "",
      "migration_deadline": "2026-10-05",
      "deadline_at": "2026-10-05",
      "previous_status": "Deprecated; the listed shutdown date has not yet passed.",
      "new_status": "Scheduled for retirement on 2026-10-05.",
      "previous": {
        "status": "Deprecated; the listed shutdown date has not yet passed."
      },
      "new": {
        "status": "Scheduled for retirement on 2026-10-05."
      },
      "required_action": "Inventory use of the exact May preview ID. Update to the September preview. Regression-test local tool handlers and function_call parsers where used; remote output-only clients can update the agent ID.",
      "recommended_action": "Inventory use of the exact May preview ID. Update to the September preview. Regression-test local tool handlers and function_call parsers where used; remote output-only clients can update the agent ID.",
      "migration_path": "Use antigravity-preview-09-2026. For local tools or parsed function_call steps, adapt tool names, PascalCase arguments and line-range file edits; remote output-only clients can update the agent ID.",
      "recommended_alternative": "Use antigravity-preview-09-2026. For local tools or parsed function_call steps, adapt tool names, PascalCase arguments and line-range file edits; remote output-only clients can update the agent ID.",
      "access_regional_impact": "After the scheduled October 5 retirement, the May agent ID may stop working. Local tool handlers require shape changes; remote output-only clients need only the agent ID change.",
      "migration_impact": "After the scheduled October 5 retirement, the May agent ID may stop working. Local tool handlers require shape changes; remote output-only clients need only the agent ID change.",
      "official_source": "https://ai.google.dev/gemini-api/docs/deprecations",
      "official_sources": [
        "https://ai.google.dev/gemini-api/docs/deprecations",
        "https://ai.google.dev/gemini-api/docs/changelog",
        "https://ai.google.dev/gemini-api/docs/antigravity-agent"
      ],
      "source_attribution": [
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/deprecations"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/changelog"
        },
        {
          "publisher": "Official vendor source",
          "url": "https://ai.google.dev/gemini-api/docs/antigravity-agent"
        }
      ],
      "evidence_strength": "strong",
      "first_detected": "2026-09-21",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "correction_history": [],
      "superseded_state": "active",
      "source_summary": "Google schedules the May Antigravity preview for October 5 retirement and names antigravity-preview-09-2026 as successor. Remote output-only clients need an ID change; local tools and parsed function_call steps also change.",
      "lifecycle_state": "deadline_passed",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "admitted",
      "featured_media_id": 2406,
      "time_points": [
        {
          "date": "2026-09-17",
          "kind": "announced",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "date": "2026-10-05",
          "kind": "migration_deadline",
          "status": "listed_earliest",
          "precision": "date"
        }
      ],
      "revision_hash": "sha256:bfe70148dfa7f56a84aa6c23688f945dd91c7b49495df7261215e74542ad0466",
      "revision_number": 4,
      "record_url": "https://kingy.ai/ai-launch-tracker/antigravity-may-preview-retirement-october-5-2026/",
      "kingy_verdict": "Google's May Antigravity preview is scheduled to retire October 5, with the September preview named as successor. Remote output-only clients need an agent ID change, while local tool handlers must adapt tool names, PascalCase arguments, and line-range edits.",
      "announcement_date_basis": "official_notice_dated",
      "rss_guid": "ksr-google-antigravity-05-2026-2026-10-05@kingy.ai"
    },
    {
      "stable_id": "ksr-openai-gpt-rosalind-billing-2026-10-05",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "gpt-rosalind-research",
      "change_type": "price_change",
      "severity": "high",
      "affected_components": "gpt-rosalind-research",
      "affected_audience": "Approved organizations using gpt-rosalind-research for internal life-sciences research.",
      "announcement_date": "2026-09-08",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "2026-10-05",
      "migration_deadline": "",
      "required_action": "The documented October 5 billing start date has passed. Review expected usage and budgets for gpt-rosalind-research, and confirm your organization’s access, applicable terms and actual billing. No account or invoice was tested.",
      "recommended_action": "The documented October 5 billing start date has passed. Review expected usage and budgets for gpt-rosalind-research, and confirm your organization’s access, applicable terms and actual billing. No account or invoice was tested.",
      "migration_path": "No model migration is announced by this billing notice.",
      "source_summary": "OpenAI lists October 5, 2026 as the billing start for gpt-rosalind-research. Standard rates are $5 input, $0.50 cached input and $25 output per million tokens in USD. Access remains limited to approved internal life-sciences research.",
      "previous_status": "The documented October 5 billing start has not yet arrived. No historical price or individual account billing state is asserted.",
      "new_status": "Standard API token billing is scheduled to begin October 5, 2026.",
      "official_source": "https://developers.openai.com/api/docs/pricing",
      "official_sources": [
        "https://developers.openai.com/api/docs/pricing",
        "https://developers.openai.com/api/docs/changelog"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-08",
          "label": "Official notice",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "kind": "price_step",
          "date": "2026-10-05",
          "label": "Standard API billing starts",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "region": "OpenAI API; specific account and regional eligibility not tested.",
      "access_regional_impact": "The trusted-access program covers approved internal research; this is not unrestricted public access.",
      "migration_impact": "No model migration is announced by this billing notice.",
      "superseded_state": "active",
      "recommended_alternative": "No model migration is announced by this billing notice.",
      "correction_history": [],
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_stable_id": "kingy:product:openai-api",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "new_price": "$5 input / $0.50 cached input / $25 output per million tokens, USD Standard API rates from 2026-10-05; cache-write pricing not applicable.",
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. This record was source-reviewed on September 27, 2026; that is not a detection date.",
      "calendar_milestones": "[{\"id\": \"price_step\", \"kind\": \"price_step\", \"date\": \"2026-10-05\", \"label\": \"Standard API billing starts\", \"status\": \"confirmed\", \"source\": \"https://developers.openai.com/api/docs/pricing\"}]",
      "id": 0,
      "event_id": "ksr-openai-gpt-rosalind-billing-2026-10-05",
      "title": "GPT-Rosalind API billing starts October 5, 2026",
      "url": "https://kingy.ai/ai-launch-tracker/openai-gpt-rosalind-api-billing-october-5-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-rosalind-api-billing-october-5-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-rosalind-api-billing-october-5-2026/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-rosalind-api-billing-october-5-2026/",
      "event_type": "price_change",
      "materiality": "high",
      "announced_at": "2026-09-08",
      "effective_at": "2026-10-05",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "cost_change",
      "admission_state": "admitted",
      "featured_media_id": 4634,
      "previous": {
        "status": "The documented October 5 billing start has not yet arrived. No historical price or individual account billing state is asserted."
      },
      "new": {
        "status": "Standard API token billing is scheduled to begin October 5, 2026."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. This record was source-reviewed on September 27, 2026; that is not a detection date."
      },
      "kingy_verdict": "GPT-Rosalind users should budget for Standard API token billing from October 5. Confirm approved internal-research access and applicable organization terms before planning usage.",
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/pricing"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/changelog"
        }
      ],
      "revision_hash": "sha256:d3a118a8b096ceaa51c9ba3d141fedaff6e35cfcdb5285b000077c5e682c4f8e",
      "revision_number": 4,
      "rss_guid": "ksr-openai-gpt-rosalind-billing-2026-10-05@kingy.ai"
    },
    {
      "stable_id": "ksr-openai-evals-platform-2026-11-30",
      "vendor": "OpenAI",
      "product": "OpenAI Evals",
      "model_version": "Evals dashboard and API",
      "change_type": "retirement",
      "severity": "high",
      "affected_components": "OpenAI Evals dashboard; OpenAI Evals API; graders documented for eval workflows",
      "affected_audience": "Teams maintaining evaluations in the OpenAI Evals dashboard or API.",
      "announcement_date": "2026-06-03",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "2026-10-31",
      "migration_deadline": "2026-10-31",
      "required_action": "Prepare for the October 31 read-only milestone. Recreate the required evaluation configuration in a replacement workflow and validate it before November 30.",
      "recommended_action": "Prepare for the October 31 read-only milestone. Recreate the required evaluation configuration in a replacement workflow and validate it before November 30.",
      "migration_path": "OpenAI documents manual recreation in Promptfoo: prompts, provider, test cases and assertions. This is not an automatic export or a guarantee of identical scores.",
      "source_summary": "OpenAI schedules existing evals to become read-only on October 31, 2026, followed by shutdown of the Evals dashboard and API on November 30. Graders documented for eval workflows are part of the transition; fine-tuning follows a separate timeline.",
      "previous_status": "Deprecated; the documented read-only and shutdown milestones have not yet arrived.",
      "new_status": "Existing evals become read-only October 31; the Evals dashboard and API are scheduled to shut down November 30.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations",
        "https://developers.openai.com/cookbook/examples/evaluation/moving-from-openai-evals-to-promptfoo",
        "https://developers.openai.com/api/docs/changelog"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-06-03",
          "label": "Official notice",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "kind": "effective",
          "date": "2026-10-31",
          "label": "Existing evals become read-only",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "kind": "shutdown",
          "date": "2026-11-30",
          "label": "Evals dashboard and API shutdown",
          "status": "confirmed",
          "precision": "date"
        }
      ],
      "region": "OpenAI API; specific account and regional eligibility not tested.",
      "access_regional_impact": "Keep the read-only and shutdown dates distinct.",
      "migration_impact": "OpenAI documents manual recreation in Promptfoo: prompts, provider, test cases and assertions. This is not an automatic export or a guarantee of identical scores.",
      "superseded_state": "active",
      "recommended_alternative": "OpenAI documents manual recreation in Promptfoo: prompts, provider, test cases and assertions. This is not an automatic export or a guarantee of identical scores.",
      "correction_history": [],
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_stable_id": "kingy:product:openai-api",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. This record was source-reviewed on September 27, 2026; that is not a detection date.",
      "calendar_milestones": "[{\"id\": \"effective\", \"kind\": \"effective\", \"date\": \"2026-10-31\", \"label\": \"Existing evals become read-only\", \"status\": \"confirmed\", \"source\": \"https://developers.openai.com/api/docs/deprecations\"}, {\"id\": \"shutdown\", \"kind\": \"shutdown\", \"date\": \"2026-11-30\", \"label\": \"Evals dashboard and API shutdown\", \"status\": \"confirmed\", \"source\": \"https://developers.openai.com/api/docs/deprecations\"}]",
      "id": 0,
      "event_id": "ksr-openai-evals-platform-2026-11-30",
      "title": "OpenAI Evals becomes read-only October 31 before November 30 shutdown",
      "url": "https://kingy.ai/ai-launch-tracker/openai-evals-read-only-october-31-shutdown-november-30-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-evals-read-only-october-31-shutdown-november-30-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-evals-read-only-october-31-shutdown-november-30-2026/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-evals-read-only-october-31-shutdown-november-30-2026/",
      "event_type": "retirement",
      "materiality": "high",
      "announced_at": "2026-06-03",
      "effective_at": "2026-10-31",
      "deadline_at": "2026-10-31",
      "observed_at": "",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "migration_deadline",
      "admission_state": "admitted",
      "featured_media_id": 4634,
      "previous": {
        "status": "Deprecated; the documented read-only and shutdown milestones have not yet arrived."
      },
      "new": {
        "status": "Existing evals become read-only October 31; the Evals dashboard and API are scheduled to shut down November 30."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. This record was source-reviewed on September 27, 2026; that is not a detection date."
      },
      "kingy_verdict": "OpenAI Evals teams should prepare for read-only access on October 31 and shutdown on November 30. Recreate the needed evaluation configuration and validate grading behavior before the final deadline.",
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/deprecations"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/cookbook/examples/evaluation/moving-from-openai-evals-to-promptfoo"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/changelog"
        }
      ],
      "revision_hash": "sha256:489303a0fcf3928a0e3609a7fe9d9a3ec64e37a31626f67b064206036a8a47b1",
      "revision_number": 3,
      "rss_guid": "ksr-openai-evals-platform-2026-11-30@kingy.ai"
    },
    {
      "stable_id": "ksr-openai-codex-5-1-nano-2027-04-01",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "gpt-5.3-codex; gpt-5.1; gpt-5.4-nano",
      "change_type": "retirement",
      "severity": "high",
      "affected_components": "gpt-5.3-codex; gpt-5.1; gpt-5.4-nano",
      "affected_audience": "API teams calling any of the three exact listed model IDs.",
      "region": "Direct OpenAI API; account and regional eligibility not tested.",
      "announcement_date": "2026-10-01",
      "announcement_date_basis": "official_notice_dated",
      "required_action": "Inventory the three exact IDs in deployed configuration. Test the mapped replacement on the supported API surface before April 1; review request fields, tool routing, outputs, latency and cost.",
      "recommended_action": "Inventory the three exact IDs in deployed configuration. Test the mapped replacement on the supported API surface before April 1; review request fields, tool routing, outputs, latency and cost.",
      "effective_date": "",
      "migration_deadline": "2027-04-01",
      "access_regional_impact": "Direct OpenAI API; account and regional eligibility not tested.",
      "migration_impact": "gpt-5.3-codex → gpt-6-sol; gpt-5.1 → gpt-6-sol; gpt-5.4-nano → gpt-6-luna. The mapping is vendor guidance, not a compatibility guarantee.",
      "migration_path": "gpt-5.3-codex → gpt-6-sol; gpt-5.1 → gpt-6-sol; gpt-5.4-nano → gpt-6-luna. The mapping is vendor guidance, not a compatibility guarantee.",
      "recommended_alternative": "gpt-5.3-codex → gpt-6-sol; gpt-5.1 → gpt-6-sol; gpt-5.4-nano → gpt-6-luna. The mapping is vendor guidance, not a compatibility guarantee.",
      "previous_status": "Deprecated with a future scheduled removal; current account availability was not tested.",
      "new_status": "API removal of the three listed IDs is scheduled for April 1, 2027.",
      "source_summary": "OpenAI schedules API removal of gpt-5.3-codex, gpt-5.1 and gpt-5.4-nano for April 1, 2027. Its table recommends GPT-6 Sol for Codex and GPT-5.1, and GPT-6 Luna for Nano.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations",
        "https://developers.openai.com/api/docs/deprecations.md",
        "https://developers.openai.com/api/docs/models/gpt-6-sol.md",
        "https://developers.openai.com/api/docs/models/gpt-6-luna.md"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "calendar_milestones": "[{\"id\":\"api_removal\",\"kind\":\"shutdown\",\"date\":\"2027-04-01\",\"label\":\"Listed API model removal\",\"status\":\"confirmed\",\"source\":\"https://developers.openai.com/api/docs/deprecations\"}]",
      "correction_history": [],
      "id": 932272,
      "event_id": "ksr-openai-codex-5-1-nano-2027-04-01",
      "title": "GPT-5.3 Codex, GPT-5.1 and GPT-5.4 Nano retire from the API April 1, 2027",
      "url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-3-codex-gpt-5-1-gpt-5-4-nano-retirement-april-1-2027/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-3-codex-gpt-5-1-gpt-5-4-nano-retirement-april-1-2027/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-3-codex-gpt-5-1-gpt-5-4-nano-retirement-april-1-2027/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-gpt-5-3-codex-gpt-5-1-gpt-5-4-nano-retirement-april-1-2027/",
      "event_type": "retirement",
      "materiality": "high",
      "announced_at": "2026-10-01",
      "effective_at": "",
      "deadline_at": "2027-04-01",
      "observed_at": "",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4634,
      "previous": {
        "status": "Deprecated with a future scheduled removal; current account availability was not tested."
      },
      "new": {
        "status": "API removal of the three listed IDs is scheduled for April 1, 2027."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection."
      },
      "kingy_verdict": "Teams using the listed Codex, GPT flagship or Nano IDs need a tested API migration before April 1, 2027. Use each documented Sol or Luna mapping and check tool routing, request fields and cost; Kingy has not verified runtime access or equivalent behavior.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-10-01",
          "status": "confirmed",
          "precision": "date",
          "label": "Official notice"
        },
        {
          "id": "api_removal",
          "kind": "shutdown",
          "date": "2027-04-01",
          "label": "Listed API model removal",
          "status": "confirmed",
          "source": "https://developers.openai.com/api/docs/deprecations"
        }
      ],
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/deprecations"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/models/gpt-6-sol.md"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/models/gpt-6-luna.md"
        }
      ],
      "rss_guid": "ksr-openai-codex-5-1-nano-2027-04-01",
      "published_at": "2026-10-03T06:42:58Z",
      "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Inventory the three exact IDs in deployed configuration. Test the mapped replacement on the supported API surface before April 1; review request fields, tool routing, outputs, latency and cost.</p></section><section><h2>Exact IDs and replacements</h2><div class=\"table-wrap\"><table><thead><tr><th>Retiring API ID</th><th>Documented replacement</th><th>Shutdown date</th></tr></thead><tbody><tr><td>gpt-5.3-codex</td><td>gpt-6-sol</td><td>2027-04-01</td></tr><tr><td>gpt-5.1</td><td>gpt-6-sol</td><td>2027-04-01</td></tr><tr><td>gpt-5.4-nano</td><td>gpt-6-luna</td><td>2027-04-01</td></tr></tbody></table></div></section><section><h2>What the notice covers</h2><p>The October 1 notice lists three exact API model IDs and an April 1, 2027 shutdown date. It does not announce the retirement of every GPT-5 model, every Codex snapshot, or a ChatGPT subscription feature.</p></section><section><h2>Test each mapped replacement</h2><p>Keep the three mappings separate. The GPT-6 Sol and Luna model cards recommend Responses for built-in tools and function calling. Chat Completions supports function calling only when reasoning_effort is none. For a tool-using application, review its API route as well as its model name. Validate request fields, output parsing and representative tasks before switching.</p></section><section><h2>What has not been established</h2><p>Kingy has not called these models, checked an account entitlement or reproduced a migration. The documented replacement does not prove equal output, price, latency or regional access. This candidate does not require a pricing claim to explain the deadline.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.</p><ul><li>Exact IDs only; unrelated snapshots, aliases, ChatGPT and partner-serving schedules are excluded.</li><li>No model availability, runtime retirement, account entitlement or migration was tested.</li><li>Supported endpoint and tool-routing guidance is specific to the documented Sol and Luna targets.</li><li>No price or output-equivalence claim is made.</li></ul></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/deprecations\">2026-10-01: GPT-5.3-Codex</a></li><li><a href=\"https://developers.openai.com/api/docs/deprecations.md\">2026-10-01: GPT-5.3-Codex</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-6-sol.md\">function calling</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-6-luna.md\">function calling</a></li></ul></section>",
      "reviewed_article_sha256": "94386a08ffecf7aae635f8665e642018c8a4e47f25a0e8bbdbee8e14f5eb8f29",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "calendar_owner": "exact_model_collector",
      "collector_calendar_links": [
        {
          "modelId": "gpt-5.3-codex",
          "collectorId": "retirement-ef58b307366e0a837be9865f",
          "reviewedDate": "2027-04-01",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "modelId": "gpt-5.1",
          "collectorId": "retirement-11158f68111e88afa9ecf5bf",
          "reviewedDate": "2027-04-01",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "modelId": "gpt-5.4-nano",
          "collectorId": "retirement-468f6be86d1a8be02551c84f",
          "reviewedDate": "2027-04-01",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        }
      ],
      "revision_hash": "sha256:c940d0533162e1a80ee5826cc288fc9e905489938d8cdd059599a9d0d1b97cee",
      "revision_number": 2
    },
    {
      "stable_id": "ksr-openai-text-to-speech-2027-01-06",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "tts-1; tts-1-hd; gpt-4o-mini-tts-2025-03-20; gpt-4o-mini-tts-2025-12-15",
      "change_type": "retirement",
      "severity": "high",
      "affected_components": "tts-1; tts-1-hd; gpt-4o-mini-tts-2025-03-20; gpt-4o-mini-tts-2025-12-15",
      "affected_audience": "API teams generating speech with the four exact listed IDs.",
      "region": "Direct OpenAI API; account and regional eligibility not tested.",
      "announcement_date": "2026-10-01",
      "announcement_date_basis": "official_notice_dated",
      "required_action": "Inventory the four exact speech IDs. Plan and test the documented Realtime migration before January 6, including connection setup, text-to-audio flow, event handling, voice/output requirements and account access.",
      "recommended_action": "Inventory the four exact speech IDs. Plan and test the documented Realtime migration before January 6, including connection setup, text-to-audio flow, event handling, voice/output requirements and account access.",
      "effective_date": "",
      "migration_deadline": "2027-01-06",
      "access_regional_impact": "Direct OpenAI API; account and regional eligibility not tested.",
      "migration_impact": "OpenAI recommends gpt-realtime-2.1-mini. Its documented endpoint is Realtime, with WebRTC, WebSocket or SIP connections. Do not describe it as a proven drop-in swap for an Audio speech request.",
      "migration_path": "OpenAI recommends gpt-realtime-2.1-mini. Its documented endpoint is Realtime, with WebRTC, WebSocket or SIP connections. Do not describe it as a proven drop-in swap for an Audio speech request.",
      "recommended_alternative": "OpenAI recommends gpt-realtime-2.1-mini. Its documented endpoint is Realtime, with WebRTC, WebSocket or SIP connections. Do not describe it as a proven drop-in swap for an Audio speech request.",
      "previous_status": "Four exact speech IDs are deprecated with a future scheduled removal; runtime availability is untested.",
      "new_status": "The listed speech IDs are scheduled for API removal January 6, 2027.",
      "source_summary": "OpenAI schedules four exact text-to-speech model IDs for API removal on January 6, 2027 and recommends gpt-realtime-2.1-mini. The replacement model card lists Realtime support, so an existing speech-generation client needs an interface review.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations",
        "https://developers.openai.com/api/docs/deprecations.md",
        "https://developers.openai.com/api/docs/models/gpt-realtime-2.1-mini",
        "https://developers.openai.com/api/docs/guides/realtime.md",
        "https://developers.openai.com/api/docs/guides/audio.md"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "calendar_milestones": "[{\"id\":\"api_removal\",\"kind\":\"shutdown\",\"date\":\"2027-01-06\",\"label\":\"Listed API model removal\",\"status\":\"confirmed\",\"source\":\"https://developers.openai.com/api/docs/deprecations\"}]",
      "correction_history": [],
      "id": 932273,
      "event_id": "ksr-openai-text-to-speech-2027-01-06",
      "title": "Four OpenAI text-to-speech IDs retire January 6, 2027",
      "url": "https://kingy.ai/ai-launch-tracker/openai-text-to-speech-model-retirement-january-6-2027/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-text-to-speech-model-retirement-january-6-2027/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-text-to-speech-model-retirement-january-6-2027/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-text-to-speech-model-retirement-january-6-2027/",
      "event_type": "retirement",
      "materiality": "high",
      "announced_at": "2026-10-01",
      "effective_at": "",
      "deadline_at": "2027-01-06",
      "observed_at": "",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4634,
      "previous": {
        "status": "Four exact speech IDs are deprecated with a future scheduled removal; runtime availability is untested."
      },
      "new": {
        "status": "The listed speech IDs are scheduled for API removal January 6, 2027."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection."
      },
      "kingy_verdict": "The four listed OpenAI text-to-speech IDs need an integration review before January 6, 2027. The recommended Realtime replacement requires a session and interface review, so test audio events, output requirements and account access before switching.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-10-01",
          "status": "confirmed",
          "precision": "date",
          "label": "Official notice"
        },
        {
          "id": "api_removal",
          "kind": "shutdown",
          "date": "2027-01-06",
          "label": "Listed API model removal",
          "status": "confirmed",
          "source": "https://developers.openai.com/api/docs/deprecations"
        }
      ],
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/deprecations"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/models/gpt-realtime-2.1-mini"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/realtime.md"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/audio.md"
        }
      ],
      "rss_guid": "ksr-openai-text-to-speech-2027-01-06",
      "published_at": "2026-10-03T06:42:59Z",
      "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Inventory the four exact speech IDs. Plan and test the documented Realtime migration before January 6, including connection setup, text-to-audio flow, event handling, voice/output requirements and account access.</p></section><section><h2>Exact IDs and replacements</h2><div class=\"table-wrap\"><table><thead><tr><th>Retiring speech ID</th><th>Shutdown date</th></tr></thead><tbody><tr><td>tts-1</td><td>2027-01-06</td></tr><tr><td>tts-1-hd</td><td>2027-01-06</td></tr><tr><td>gpt-4o-mini-tts-2025-03-20</td><td>2027-01-06</td></tr><tr><td>gpt-4o-mini-tts-2025-12-15</td><td>2027-01-06</td></tr></tbody></table></div></section><section><h2>One speech notice, four exact IDs</h2><p>The October 1 deprecation notice sets January 6, 2027 for tts-1, tts-1-hd and two dated gpt-4o-mini-tts snapshots. It names gpt-realtime-2.1-mini as the recommended replacement. Do not extend that table to unlisted speech aliases.</p></section><section><h2>The replacement changes the integration question</h2><p>The Mini model card lists the Realtime endpoint and WebRTC, WebSocket and SIP connections. The Realtime guide describes sessions and audio events. A migration from a bounded speech-generation request must therefore review session setup, input/output events, audio format, cancellation, voice choices and credential handling. These are preparation steps; Kingy has not run the migration.</p></section><section><h2>Keep adjacent audio deadlines separate</h2><p>January 6 is not the January 20 legacy audio/realtime notice or the February 26 transcription notice. Check the exact configured ID against the relevant table. An undated alias is not automatically included merely because a similarly named dated snapshot is listed.</p></section><section><h2>Choose an architecture deliberately</h2><p>OpenAI’s broader Audio and voice guide distinguishes dedicated speech generation, Realtime sessions and GPT-Live conversations. That broader chooser does not replace the Mini recommendation in this exact retirement notice. Validate the required output and supported interface instead of assuming the recommended model preserves every old voice or format.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.</p><ul><li>No Audio speech endpoint support is established for this recommended Realtime model by its current card.</li><li>No exact voice, file format, latency, cost or output equivalence was tested.</li><li>Scope is the four listed IDs; no family-wide or unlisted-alias shutdown claim.</li><li>January 20 legacy audio and February 26 transcription remain separate events.</li><li>No account access, runtime shutdown or migration run occurred.</li></ul></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/deprecations\">2026-10-01: Text-to-speech</a></li><li><a href=\"https://developers.openai.com/api/docs/deprecations.md\">2026-10-01: Text-to-speech</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-realtime-2.1-mini\">Realtime</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/realtime.md\">WebRTC</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/audio.md\">speech generation</a></li></ul></section>",
      "reviewed_article_sha256": "5240429848cbf7298bdb3a6e4cd2862b0f1e5b1a991f820627da3e8d3d01ec6b",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "calendar_owner": "exact_model_collector",
      "collector_calendar_links": [
        {
          "modelId": "tts-1",
          "collectorId": "retirement-8506b24358f4ea87d28cc4a3",
          "reviewedDate": "2027-01-06",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "modelId": "tts-1-hd",
          "collectorId": "retirement-3693cc270d44c421a3d9ab97",
          "reviewedDate": "2027-01-06",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "modelId": "gpt-4o-mini-tts-2025-03-20",
          "collectorId": "retirement-4c9e35e3784491632ecbdc1d",
          "reviewedDate": "2027-01-06",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        },
        {
          "modelId": "gpt-4o-mini-tts-2025-12-15",
          "collectorId": "retirement-6755fe2671821906802ef372",
          "reviewedDate": "2027-01-06",
          "sourceUrl": "https://developers.openai.com/api/docs/deprecations.md"
        }
      ],
      "revision_hash": "sha256:2b49b9a9996359f623823a99e403d4e5cb295a07b42aab26587f7e4724de95e5",
      "revision_number": 2
    },
    {
      "stable_id": "ksr-anthropic-sonnet-5-5-migration-2026-09-28",
      "vendor": "Anthropic",
      "product": "Claude API",
      "model_version": "claude-sonnet-5-5; thinking configuration and blocks; tool_choice; computer_20251124 on Claude API and Google Cloud; advisor tool; streamed inter-tool text",
      "change_type": "breaking_api_change",
      "severity": "high",
      "affected_components": "claude-sonnet-5-5; thinking configuration and blocks; tool_choice; computer_20251124 on Claude API and Google Cloud; advisor tool; streamed inter-tool text",
      "affected_audience": "Teams migrating Sonnet 5 or older Messages API workflows to claude-sonnet-5-5.",
      "region": "Claude API and documented partner surfaces; each platform exception retained.",
      "announcement_date": "2026-09-28",
      "announcement_date_basis": "official_notice_dated",
      "required_action": "Before routing a workflow to claude-sonnet-5-5, audit thinking settings, tool-choice assumptions, append-only history, streaming content-block parsing, computer tools and advisor models. Validate the affected platform and effort setting.",
      "recommended_action": "Before routing a workflow to claude-sonnet-5-5, audit thinking settings, tool-choice assumptions, append-only history, streaming content-block parsing, computer tools and advisor models. Validate the affected platform and effort setting.",
      "effective_date": "2026-09-28",
      "migration_deadline": "",
      "access_regional_impact": "Claude API and documented partner surfaces; each platform exception retained.",
      "migration_impact": "Use the Sonnet 5.5 migration guide. between_tools is supported at low/medium/high effort; adaptive thinking supports the higher settings. Use supported tool-choice modes, preserve content blocks and review the documented model/prefix/account rules separately.",
      "migration_path": "Use the Sonnet 5.5 migration guide. between_tools is supported at low/medium/high effort; adaptive thinking supports the higher settings. Use supported tool-choice modes, preserve content blocks and review the documented model/prefix/account rules separately.",
      "recommended_alternative": "Use the Sonnet 5.5 migration guide. between_tools is supported at low/medium/high effort; adaptive thinking supports the higher settings. Use supported tool-choice modes, preserve content blocks and review the documented model/prefix/account rules separately.",
      "previous_status": "Applications may rely on Sonnet 5 thinking settings, forced tool choice, earlier computer tools or inter-tool text behavior.",
      "new_status": "Those assumptions can fail or lose visible/reusable reasoning when the workflow switches to Sonnet 5.5. No universal shutdown or migration deadline is announced.",
      "source_summary": "Anthropic’s Sonnet 5.5 migration guidance changes thinking configuration, rejects forced tool choice and applies model, prefix and account conditions to thinking history. Legacy computer-tool and advisor restrictions have their own scopes; inter-tool text also changes response shape.",
      "official_source": "https://platform.claude.com/docs/en/release-notes/overview",
      "official_sources": [
        "https://platform.claude.com/docs/en/release-notes/overview",
        "https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-5-5",
        "https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide",
        "https://platform.claude.com/docs/en/build-with-claude/preserved-thinking"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "913004",
      "product_relationship_id": "913011",
      "entity_url": "https://kingy.ai/ai-tools/claude-api/",
      "calendar_milestones": "[]",
      "correction_history": [],
      "id": 932274,
      "event_id": "ksr-anthropic-sonnet-5-5-migration-2026-09-28",
      "title": "Sonnet 5.5 changes thinking, tool choice and conversation-history handling",
      "url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/",
      "article_url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/",
      "record_url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/",
      "event_type": "breaking_api_change",
      "materiality": "high",
      "announced_at": "2026-09-28",
      "effective_at": "2026-09-28",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "incompatible_behavior",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4635,
      "previous": {
        "status": "Applications may rely on Sonnet 5 thinking settings, forced tool choice, earlier computer tools or inter-tool text behavior."
      },
      "new": {
        "status": "Those assumptions can fail or lose visible/reusable reasoning when the workflow switches to Sonnet 5.5. No universal shutdown or migration deadline is announced."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection."
      },
      "kingy_verdict": "A Sonnet migration needs an audit of thinking settings, forced tool choice, conversation history and streamed content blocks. Keep the documented model, account, effort and platform exceptions explicit; no fixed migration deadline or tested compatibility is claimed.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-28",
          "status": "confirmed",
          "precision": "date",
          "label": "Official notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-5-5"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/build-with-claude/preserved-thinking"
        }
      ],
      "rss_guid": "ksr-anthropic-sonnet-5-5-migration-2026-09-28",
      "published_at": "2026-10-03T06:42:59Z",
      "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Before routing a workflow to claude-sonnet-5-5, audit thinking settings, tool-choice assumptions, append-only history, streaming content-block parsing, computer tools and advisor models. Validate the affected platform and effort setting.</p></section><section><h2>Migration checklist</h2><div class=\"table-wrap\"><table><thead><tr><th>Affected assumption</th><th>Documented Sonnet 5.5 behavior</th><th>Action</th></tr></thead><tbody><tr><td>thinking.type=disabled</td><td>Rejected; between_tools only at low/medium/high</td><td>Use between_tools there, or adaptive thinking for xhigh/max.</td></tr><tr><td>Extra between_tools fields or per-turn effort changes</td><td>display/budget_tokens/block_binding and changed effort are rejected</td><td>Keep effort fixed; use adaptive where those controls are needed.</td></tr><tr><td>tool_choice any/tool</td><td>Returns 400; auto and none are supported</td><td>Audit code that requires a forced call; auto is not a call guarantee.</td></tr><tr><td>Editable replayed history</td><td>Prefix validation has account-age and opt-in conditions</td><td>Keep system, tools and earlier messages unchanged; inspect configured mismatch handling.</td></tr><tr><td>Thinking from another model or account</td><td>Unreadable model/account blocks are dropped; requests can succeed</td><td>Track silent loss of reasoning; retain documented compatibility and linked-account exceptions.</td></tr><tr><td>computer_20251124</td><td>Not accepted on Claude API or Google Cloud</td><td>Follow the platform-specific computer-use migration guidance.</td></tr><tr><td>Advisor set includes Opus 4.8, Opus 4.7 or Sonnet 5</td><td>Those advisors are rejected</td><td>Choose a documented supported advisor; verify access.</td></tr><tr><td>Inter-tool progress arrives as text</td><td>Progress arrives in thinking blocks; default display omits it</td><td>Parse by block type and review display/summary handling.</td></tr></tbody></table></div></section><section><h2>Thinking configuration and effort</h2><p>The September 28 release and Sonnet migration guide document adaptive thinking by default. disabled and manual enabled budgets are not supported. between_tools turns off up-front thinking at low, medium or high effort. It rejects xhigh/max and extra display, budget_tokens or block_binding fields; it also requires the effort level to stay fixed during the conversation.</p></section><section><h2>Forced tool choice</h2><p>tool_choice values any and tool return a 400 error. auto and none are supported. Strict tool schemas can help validate tool input, but auto plus strict is not a guarantee that a tool will be called. Review workflows that require a specific external action.</p></section><section><h2>Three history rules with different outcomes</h2><p>Model compatibility, prefix integrity and account binding are separate checks. Unsupported model blocks are dropped rather than proving a failed request. Sonnet 5.5 blocks also work only in their originating account or a linked account; another account’s request can succeed after the blocks are dropped. Earlier models’ blocks do not acquire this new account rule.</p></section><section><h2>Prefix checks depend on account age and configuration</h2><p>For accounts created on or after August 31, 2026 at 00:00 UTC, prefix checking is on by default on Claude API, Bedrock and Google Cloud. Earlier accounts opt in by setting prefix_mismatch_behavior. Ordinary enforced prefix mismatches default to a 400; Message Batches drops failing blocks when that field is unset. The beta controls and mismatch reporting require thinking-binding-controls-2026-08-01. Sonnet’s block_binding controls require adaptive thinking; they cannot be added to between_tools.</p></section><section><h2>Preserve history without claiming all models share reasoning</h2><p>Keep the system prompt, tools and earlier messages stable and append new turns. Pass thinking blocks back unchanged, including empty blocks. Model-switch compatibility is selective: Sonnet 5.5 can read Sonnet 5, Opus 4.8, Haiku 4.5 and earlier blocks, but not Opus 5/5.5 or Fable/Mythos blocks. Only Opus 5.5 on Claude API and Google Cloud is documented here to read Sonnet 5.5 thinking when switching away.</p></section><section><h2>Computer tools, advisors and streaming</h2><p>The older computer_20251124 tool is rejected on Claude API and Google Cloud; do not transfer that restriction to every partner. The advisor tool rejects Opus 4.8, Opus 4.7 and Sonnet 5. Progress between tool calls arrives in thinking blocks, with text omitted by default. Review response parsing and streaming display rather than assuming a quiet stream means no progress.</p></section><section><h2>No fixed migration deadline</h2><p>This is a model-migration record, separate from the Sonnet 4.5 November 30 retirement candidate. September 28 is the dated release notice, not an invented shutdown deadline. Kingy has not reproduced errors, tested SDK behavior or checked any account entitlement.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.</p><ul><li>No vendor API, SDK, account entitlement or runtime failure was tested.</li><li>Do not transfer Sonnet 5.5 rules from or onto Opus, Fable or Mythos by analogy.</li><li>The prefix default threshold, older-account opt-in, Message Batches exception and required beta header remain explicit.</li><li>Model/account mismatch drops and prefix rejection are distinct; linked-account and model-compatibility exceptions remain.</li><li>Computer-tool rejection is limited to the documented Claude API/Google Cloud surfaces.</li><li>No migration deadline is invented. Sonnet 4.5’s retirement candidate remains separate.</li></ul></section><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview\">September 28, 2026</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-5-5\">Forced tool use</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide\">between_tools</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/preserved-thinking\">Keeping the prefix unchanged</a></li></ul></section>",
      "reviewed_article_sha256": "47b69e466e7bc0ddfb762c2edb347399de62686d4ed0edd2c626c6b7dc578bf8",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "revision_hash": "sha256:7169358027b245a3371788ea6405fd20e7bb6ecc733e0fa75e860cd5e9775cf1",
      "revision_number": 2
    },
    {
      "stable_id": "ksr-anthropic-claude-sonnet-4-5-2026-11-30",
      "vendor": "Anthropic",
      "product": "Claude API",
      "model_version": "claude-sonnet-4-5-20250929",
      "change_type": "retirement",
      "severity": "high",
      "affected_components": "claude-sonnet-4-5-20250929",
      "affected_audience": "Teams whose Claude API integrations call claude-sonnet-4-5-20250929.",
      "region": "Claude API scope; Amazon Bedrock and Google Cloud retirement schedules are excluded. Account access and runtime were not tested.",
      "announcement_date": "2026-09-30",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "2026-11-30",
      "required_action": "Find claude-sonnet-4-5-20250929 in deployed configuration and usage logs. Validate Sonnet 5.5 on representative workflows before the listed November 30 retirement, including request fields, tools, thinking history and output parsing.",
      "recommended_action": "Find claude-sonnet-4-5-20250929 in deployed configuration and usage logs. Validate Sonnet 5.5 on representative workflows before the listed November 30 retirement, including request fields, tools, thinking history and output parsing.",
      "access_regional_impact": "The notice schedules Claude API retirement. Partner-operated platforms set separate dates.",
      "migration_path": "Inventory the exact retiring Claude API ID and validate Sonnet 5.5 using its starting-model-specific migration guide. A model-ID substitution alone does not establish compatibility or entitlement.",
      "migration_impact": "Inventory the exact retiring Claude API ID and validate Sonnet 5.5 using its starting-model-specific migration guide. A model-ID substitution alone does not establish compatibility or entitlement.",
      "recommended_alternative": "claude-sonnet-5-5 (vendor recommendation; compatibility and entitlement not tested)",
      "previous_status": "Documented deprecated model with a future scheduled retirement; runtime not tested.",
      "new_status": "Listed Claude API retirement November 30, 2026; status-table date remains tentative.",
      "source_summary": "Anthropic’s September 30 notice schedules Claude API retirement of claude-sonnet-4-5-20250929 for November 30, 2026 and recommends claude-sonnet-5-5. Its status table labels the date tentative. Partner-operated platforms set separate schedules.",
      "official_source": "https://platform.claude.com/docs/en/about-claude/model-deprecations",
      "official_sources": [
        "https://platform.claude.com/docs/en/about-claude/model-deprecations",
        "https://platform.claude.com/docs/en/release-notes/overview",
        "https://platform.claude.com/docs/en/about-claude/model-deprecations.md",
        "https://platform.claude.com/docs/en/models/sonnet-4-5/overview",
        "https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide",
        "https://platform.claude.com/docs/en/build-with-claude/preserved-thinking"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. The notice, source retrieval and local review dates do not establish when Kingy first detected this change.",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "913004",
      "product_relationship_id": "913011",
      "entity_url": "https://kingy.ai/ai-tools/claude-api/",
      "calendar_milestones": "[]",
      "correction_history": [],
      "id": 932287,
      "event_id": "ksr-anthropic-claude-sonnet-4-5-2026-11-30",
      "title": "Claude Sonnet 4.5 API retirement is scheduled for November 30, 2026",
      "url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-4-5-api-retirement-november-30-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-4-5-api-retirement-november-30-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-4-5-api-retirement-november-30-2026/",
      "record_url": "https://kingy.ai/ai-launch-tracker/claude-sonnet-4-5-api-retirement-november-30-2026/",
      "event_type": "retirement",
      "materiality": "high",
      "announced_at": "2026-09-30",
      "effective_at": "",
      "deadline_at": "2026-11-30",
      "observed_at": "",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4635,
      "previous": {
        "status": "Documented deprecated model with a future scheduled retirement; runtime not tested."
      },
      "new": {
        "status": "Listed Claude API retirement November 30, 2026; status-table date remains tentative."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. The notice, source retrieval and local review dates do not establish when Kingy first detected this change."
      },
      "kingy_verdict": "Anthropic’s September 30 notice schedules Claude API retirement of claude-sonnet-4-5-20250929 for November 30, 2026 and recommends claude-sonnet-5-5. Its status table labels the date tentative. Partner-operated platforms set separate schedules. Required action: Find claude-sonnet-4-5-20250929 in deployed configuration and usage logs. Validate Sonnet 5.5 on representative workflows before the listed November 30 retirement, including request fields, tools, thinking history and output parsing.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-30",
          "status": "confirmed",
          "precision": "date",
          "label": "Official retirement notice"
        },
        {
          "id": "model_retirement",
          "kind": "shutdown",
          "date": "2026-11-30",
          "status": "scheduled",
          "precision": "date",
          "label": "Listed Claude API retirement (tentative status-table date)",
          "source": "https://platform.claude.com/docs/en/about-claude/model-deprecations"
        }
      ],
      "source_attribution": [
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/about-claude/model-deprecations"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/about-claude/model-deprecations.md"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/sonnet-4-5/overview"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/build-with-claude/preserved-thinking"
        }
      ],
      "rss_guid": "ksr-anthropic-claude-sonnet-4-5-2026-11-30",
      "published_at": "2026-10-03T19:42:11Z",
      "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Find claude-sonnet-4-5-20250929 in deployed configuration and usage logs. Validate Sonnet 5.5 on representative workflows before the listed November 30 retirement, including request fields, tools, thinking history and output parsing.</p></section><section><h2>Deadline and replacement</h2><div class=\"table-wrap\"><table><tbody><tr><th scope=\"row\">Deprecated Claude API ID</th><td>claude-sonnet-4-5-20250929</td></tr><tr><th scope=\"row\">Official notice</th><td>September 30, 2026</td></tr><tr><th scope=\"row\">Listed retirement</th><td>November 30, 2026 (scheduled; status table says tentative)</td></tr><tr><th scope=\"row\">Recommended replacement</th><td>claude-sonnet-5-5</td></tr></tbody></table></div></section><section><h2>What the notice covers</h2><p>Anthropic’s September 30 notice names claude-sonnet-4-5-20250929 and recommends claude-sonnet-5-5. The retiring model is currently documented as deprecated. This is a scheduled Claude API retirement; Kingy has not tested runtime availability.</p></section><section><h2>Keep the date and platform limits</h2><p>The retirement history and release note say November 30, 2026; the current status table labels its retirement-date column tentative. Amazon Bedrock and Google Cloud set separate schedules. Check the provider actually serving your configured model.</p></section><section><h2>Prepare the Sonnet 4.5 migration</h2><p>Use the Sonnet 5.5 guide’s sections for 4.5 and earlier callers. Audit thinking and effort settings, forced-tool assumptions, assistant prefills, replayed history, tool-input parsing and structured-output fields. Computer-use changes depend on the platform. Recount tokens and validate output and cost on your workloads.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. The notice, source retrieval and local review dates do not establish when Kingy first detected this change. No model inference, account entitlement or migration was tested. Replacement guidance does not establish compatible output, access or cost.</p></section><p>See the <a href=\"https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/\">existing Sonnet 5.5 migration report</a> for the separate API-behavior changes.</p><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/about-claude/model-deprecations\">Model deprecations</a></li><li><a href=\"https://platform.claude.com/docs/en/about-claude/model-deprecations.md\">Deprecation table (Markdown)</a></li><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview\">September 30 release note</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-4-5/overview\">Sonnet 4.5 model overview</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide\">Sonnet 5.5 migration guide</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/preserved-thinking\">Preserved thinking</a></li></ul></section>",
      "reviewed_article_sha256": "1277e586039b38cc9e804e4764ba003512be3b4ce557bc6bfda1a03d0c6e9a02",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "calendar_owner": "exact_model_collector",
      "collector_calendar_links": [
        {
          "modelId": "claude-sonnet-4-5-20250929",
          "collectorId": "retirement-f7db38d152e82fb204f87dcd",
          "reviewedDate": "2026-11-30",
          "sourceUrl": "https://platform.claude.com/docs/en/about-claude/model-deprecations.md"
        }
      ],
      "retirement_date_qualifier": "Scheduled in the notice; tentative retirement date in the status table.",
      "revision_hash": "sha256:617cf9eec0cfb371b0ffc1394875e653354d274968eb8dbf09f6dbd1ebe2d9b5",
      "revision_number": 2
    },
    {
      "stable_id": "ksr-anthropic-fable-mythos-5-1-migration-2026-09-01",
      "vendor": "Anthropic",
      "product": "Claude API",
      "model_version": "claude-fable-5-1; claude-mythos-5-1",
      "change_type": "breaking_api_change",
      "severity": "high",
      "affected_components": "claude-fable-5-1; claude-mythos-5-1; tool_choice; replayed thinking; Fable prefix-history validation",
      "affected_audience": "Teams migrating custom Messages API workflows or routing/fallback code to these exact 5.1 models.",
      "region": "Claude API; partner availability and feature support require platform-specific validation. Reverse Opus 5.5 thinking compatibility is limited here to Claude API.",
      "announcement_date": "2026-09-01",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "",
      "required_action": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
      "recommended_action": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
      "access_regional_impact": "Mythos 5.1 is limited to organizations verified through Anthropic’s verification programs, such as the Cyber Verification Program. Both models have retention requirements with expressly authorized exceptions. No account or partner entitlement was inspected.",
      "migration_path": "Audit exact model IDs, tool-choice assumptions, supported schema features, append-only history and target-specific thinking routes. Check account-age, beta-header and Message Batches behavior. Validate the serving account and platform before switching.",
      "migration_impact": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
      "recommended_alternative": "Use the target-specific Fable/Mythos migration guide; no alternative model is guaranteed compatible.",
      "previous_status": "Fable 5 callers can rely on forced tool choice or history/routing patterns that require review for 5.1.",
      "new_status": "The exact 5.1 targets reject forced tools; unreadable thinking can be dropped, and enforced Fable prefix mismatches can reject requests. No shutdown deadline is established.",
      "source_summary": "Fable 5.1 and Mythos 5.1 reject forced tool choice. Thinking replay depends on the target model. Fable’s prefix-history check also depends on account age, request settings and API surface; Mythos does not run that check.",
      "official_source": "https://platform.claude.com/docs/en/models/fable-5-1/migration-guide",
      "official_sources": [
        "https://platform.claude.com/docs/en/models/fable-5-1/whats-new-fable-5-1",
        "https://platform.claude.com/docs/en/build-with-claude/thinking",
        "https://platform.claude.com/docs/en/build-with-claude/preserved-thinking",
        "https://platform.claude.com/docs/en/release-notes/overview",
        "https://platform.claude.com/docs/en/models/opus-5-5/migration-guide",
        "https://platform.claude.com/docs/en/models/fable-5-1/migration-guide"
      ],
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "first_detected_note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change.",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "913004",
      "product_relationship_id": "913011",
      "entity_url": "https://kingy.ai/ai-tools/claude-api/",
      "calendar_milestones": "[]",
      "correction_history": [
        "2026-10-07 scoped access correction: Anthropic now limits Mythos 5.1 to organizations verified through its verification programs, such as the Cyber Verification Program. Previous Glasswing-only statement retained as dated history from the October 5 review. Retention, runtime, account-entitlement and indexability holds remain; no full-record freshness renewal."
      ],
      "id": 932289,
      "event_id": "ksr-anthropic-fable-mythos-5-1-migration-2026-09-01",
      "title": "Fable 5.1 and Mythos 5.1 change tool choice and thinking-history handling",
      "url": "https://kingy.ai/ai-launch-tracker/claude-fable-mythos-5-1-tool-choice-thinking-history-migration/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/claude-fable-mythos-5-1-tool-choice-thinking-history-migration/",
      "article_url": "https://kingy.ai/ai-launch-tracker/claude-fable-mythos-5-1-tool-choice-thinking-history-migration/",
      "record_url": "https://kingy.ai/ai-launch-tracker/claude-fable-mythos-5-1-tool-choice-thinking-history-migration/",
      "event_type": "breaking_api_change",
      "materiality": "high",
      "announced_at": "2026-09-01",
      "effective_at": "",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "incompatible_behavior",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4635,
      "previous": {
        "status": "Fable 5 callers can rely on forced tool choice or history/routing patterns that require review for 5.1."
      },
      "new": {
        "status": "The exact 5.1 targets reject forced tools; unreadable thinking can be dropped, and enforced Fable prefix mismatches can reject requests. No shutdown deadline is established."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change."
      },
      "kingy_verdict": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-01",
          "status": "confirmed",
          "precision": "date",
          "label": "Official launch and API-change notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/fable-5-1/whats-new-fable-5-1"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/build-with-claude/thinking"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/build-with-claude/preserved-thinking"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/release-notes/overview"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/opus-5-5/migration-guide"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/fable-5-1/migration-guide"
        }
      ],
      "rss_guid": "ksr-anthropic-fable-mythos-5-1-migration-2026-09-01",
      "published_at": "2026-10-03T21:49:59Z",
      "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.</p></section><section><h2>Replace forced tool choice</h2><p>Both exact 5.1 models reject tool_choice types any and tool with a 400 invalid_request_error. auto and none remain supported. The migration guide applies this validation to Messages, Message Batches and token counting. Use auto with explicit tool instructions; it does not guarantee a call. Strict tools or structured outputs can enforce schema validity where available. In CMEK organizations, the guide excludes structured outputs, including strict tools, on Claude Fable models.</p></section><section><h2>Check model routes explicitly</h2><p>A block’s producing model and the receiving model determine whether its thinking can be read. Opus 5.5 and Sonnet 5.5 cannot read Fable/Mythos thinking. On the Claude API, Fable 5.1 and Mythos 5.1 can read Opus 5.5 thinking. Do not extend that reverse route to other platforms or assume that a newer release reads every older model’s blocks. The API drops unreadable blocks; that model mismatch alone does not reject the whole request.</p></section><section><h2>Keep Fable history stable</h2><p>Fable 5.1 checks the system prompt, tools and messages preceding replayed thinking. Edits can invalidate later blocks. Mythos 5.1 does not run this prefix check. Enforcement defaults on for accounts created on or after August 31, 2026 at 00:00 UTC; older accounts opt in by setting prefix_mismatch_behavior. Keep history append-only and pass complete thinking blocks back unchanged.</p></section><section><h2>Handle prefix mismatches by surface</h2><p>The thinking-binding-controls-2026-08-01 beta header enables mismatch settings and transformation reporting. Where Fable’s prefix check is enforced, ordinary requests default to error unless drop_block is chosen. In Message Batches, leaving the setting unset drops failing blocks instead; explicitly setting error makes the item fail. Dropping blocks loses reasoning and does not repair the history edit. Monitor input_transformations for these losses.</p></section><section><h2>Verify access and retention</h2><p>Mythos 5.1 is limited to organizations verified through Anthropic’s verification programs, such as the Cyber Verification Program. Both models require 30-day retention unless Anthropic expressly authorizes an exception. The migration guide documents a Claude API validation error when required retention is absent. Account entitlement, retention configuration and platform feature support need their own checks.</p></section><section><h2>No shutdown deadline</h2><p>September 1, 2026 is the documented launch and API-change notice. This is an opt-in migration record. No mandatory migration or retirement deadline is established.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. Kingy has not reproduced an API error or tested inference, SDK behavior, migration, account access, retention or output equivalence.</p></section><p>The <a href=\"https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/\">Sonnet 5.5 migration report</a> covers a separate target model. Its account, effort and platform rules do not become Fable/Mythos rules by analogy.</p><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/models/fable-5-1/whats-new-fable-5-1\">Fable 5.1 changes</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/thinking\">Thinking compatibility</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/preserved-thinking\">Prefix checks and mismatch handling</a></li><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview\">September 1 release notice</a></li><li><a href=\"https://platform.claude.com/docs/en/models/opus-5-5/migration-guide\">Opus 5.5 model-routing limits</a></li><li><a href=\"https://platform.claude.com/docs/en/models/fable-5-1/migration-guide\">Fable/Mythos migration guide</a></li></ul></section><section><h2>Scoped access correction (2026-10-07)</h2><p>2026-10-07 scoped access correction: Anthropic now limits Mythos 5.1 to organizations verified through its verification programs, such as the Cyber Verification Program. Previous Glasswing-only statement retained as dated history from the October 5 review. Retention, runtime, account-entitlement and indexability holds remain; no full-record freshness renewal.</p><p>Historical wording from the October 5 review: Mythos 5.1 is restricted to approved Project Glasswing customers.</p><p>Source: <a href=\"https://platform.claude.com/docs/en/models/mythos-5-1/overview\">Mythos 5.1 overview</a>.</p></section>",
      "reviewed_article_sha256": "0c7173a9d12f8ee822602dec4803f433966f6067961915834b52b5273bb78c6f",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "revision_hash": "sha256:1de4071b0acdb88017c07511136f8d58d9a0faccd4fd4824c6b9cdda1b49d324",
      "revision_number": 3
    },
    {
      "stable_id": "ksr-openai-gpt-6-astra-migration-2026-09-03",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "gpt-6-astra",
      "change_type": "breaking_api_change",
      "severity": "high",
      "affected_components": "gpt-6-astra; reasoning effort; sampling/log-probability fields; Chat Completions tools; Responses Item handling",
      "affected_audience": "Teams migrating API callers and tool workflows to gpt-6-astra.",
      "region": "OpenAI API; no account or regional entitlement was inspected.",
      "announcement_date": "2026-09-03",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "",
      "access_regional_impact": "Account access, regional processing and pricing require separate verification.",
      "migration_path": "Audit exact model routes and unsupported fields; migrate tool workflows to Responses with call_id-linked results and validate representative tasks.",
      "recommended_alternative": "Use supported settings for the exact target model; no alternative model is guaranteed compatible.",
      "previous_status": "Callers moving to Astra may rely on none reasoning, sampling options, log-probability fields or Chat Completions tools.",
      "new_status": "Astra requires supported reasoning effort and request fields; tools require Responses. No retirement deadline is established.",
      "official_source": "https://developers.openai.com/api/docs/guides/latest-model",
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "calendar_milestones": "[]",
      "correction_history": [],
      "required_action": "Inventory gpt-6-astra callers, reasoning settings, sampling/log-probability fields and tool routes. Use a supported reasoning effort; omit temperature, top_p and top_logprobs, remove Chat Completions logprobs or the Responses message.output_text.logprobs include entry as applicable, and migrate tool definitions/results to Responses. Validate on representative tasks before switching production.",
      "recommended_action": "Inventory gpt-6-astra callers, reasoning settings, sampling/log-probability fields and tool routes. Use a supported reasoning effort; omit temperature, top_p and top_logprobs, remove Chat Completions logprobs or the Responses message.output_text.logprobs include entry as applicable, and migrate tool definitions/results to Responses. Validate on representative tasks before switching production.",
      "migration_impact": "Inventory gpt-6-astra callers, reasoning settings, sampling/log-probability fields and tool routes. Use a supported reasoning effort; omit temperature, top_p and top_logprobs, remove Chat Completions logprobs or the Responses message.output_text.logprobs include entry as applicable, and migrate tool definitions/results to Responses. Validate on representative tasks before switching production.",
      "source_summary": "Adopting gpt-6-astra requires a supported reasoning effort and removal of unsupported sampling/log-probability options. Chat Completions can serve requests without tools; Astra tool integrations must use Responses and its input/output Item shapes.",
      "first_detected_note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change.",
      "official_sources": [
        "https://developers.openai.com/api/docs/guides/latest-model",
        "https://developers.openai.com/api/docs/models/gpt-6-astra",
        "https://developers.openai.com/api/docs/changelog",
        "https://developers.openai.com/api/docs/guides/function-calling",
        "https://developers.openai.com/api/docs/guides/migrate-to-responses"
      ],
      "id": 932392,
      "event_id": "ksr-openai-gpt-6-astra-migration-2026-09-03",
      "title": "GPT-6 Astra migrations require parameter and tool-routing changes",
      "url": "https://kingy.ai/ai-launch-tracker/gpt-6-astra-api-migration-parameters-tool-routing/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/gpt-6-astra-api-migration-parameters-tool-routing/",
      "article_url": "https://kingy.ai/ai-launch-tracker/gpt-6-astra-api-migration-parameters-tool-routing/",
      "record_url": "https://kingy.ai/ai-launch-tracker/gpt-6-astra-api-migration-parameters-tool-routing/",
      "event_type": "breaking_api_change",
      "materiality": "high",
      "announced_at": "2026-09-03",
      "effective_at": "",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "incompatible_behavior",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4634,
      "previous": {
        "status": "Callers moving to Astra may rely on none reasoning, sampling options, log-probability fields or Chat Completions tools."
      },
      "new": {
        "status": "Astra requires supported reasoning effort and request fields; tools require Responses. No retirement deadline is established."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change."
      },
      "kingy_verdict": "GPT-6 Astra is not a drop-in replacement for callers that rely on unsupported sampling fields or Chat Completions tools. Audit request parameters and move tool workflows to Responses before switching, then validate on representative tasks. This is an opt-in migration with no retirement deadline.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-03",
          "status": "confirmed",
          "precision": "date",
          "label": "Official migration notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/latest-model"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/models/gpt-6-astra"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/changelog"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/function-calling"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/migrate-to-responses"
        }
      ],
      "rss_guid": "ksr-openai-gpt-6-astra-migration-2026-09-03",
      "published_at": "2026-10-06T02:00:51Z",
      "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>GPT-6 Astra is not a drop-in replacement for callers that rely on unsupported sampling fields or Chat Completions tools. Audit request parameters and move tool workflows to Responses before switching, then validate on representative tasks. This is an opt-in migration with no retirement deadline.</p></section><section class=\"action\"><h2>Required action</h2><p>Inventory gpt-6-astra callers, reasoning settings, sampling/log-probability fields and tool routes. Use a supported reasoning effort; omit temperature, top_p and top_logprobs, remove Chat Completions logprobs or the Responses message.output_text.logprobs include entry as applicable, and migrate tool definitions/results to Responses. Validate on representative tasks before switching production.</p></section><section><h2>Choose supported reasoning effort</h2><p>For gpt-6-astra, the model card lists low, medium, high, xhigh and max. The none setting is unsupported. The migration guide recommends low when moving from none or minimal, followed by evaluation on representative tasks. Use reasoning.effort in Responses or reasoning_effort in Chat Completions.</p></section><section><h2>Remove unsupported request fields</h2><p>Remove temperature, top_p and top_logprobs from Astra requests. In Chat Completions, also remove logprobs. In Responses, remove message.output_text.logprobs from include while preserving other supported include entries. These are documented migration requirements; Kingy has not reproduced an API error.</p></section><section><h2>Move tools to Responses</h2><p>Chat Completions supports Astra requests without tools. Tool integrations require Responses. Model-card function-calling support does not establish tool support on every endpoint. Migrate tool definitions and input/output Item handling together, including function_call_output results linked to the originating call_id.</p></section><section><h2>Keep the model scope exact</h2><p>This record applies to gpt-6-astra. Do not transfer its restrictions to Sol or Luna. Current guides also discuss GPT-6.1 Sol, which is outside this record. This article does not claim that existing model integrations are being retired.</p></section><section><h2>No mandatory deadline</h2><p>September 3, 2026 is the documented migration notice date. This is an opt-in migration, not a retirement of existing models. No mandatory migration or retirement deadline is established, and this record adds no calendar milestone.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. No account, inference, migration, SDK, billing, cache or monitoring test was performed. Prompt caching, misalignment monitoring, Fast/Ultrafast modes, regional processing and pricing need separate implementation checks.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/guides/latest-model\">Astra migration requirements</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-6-astra\">GPT-6 Astra model card</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">September 3 migration notice</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/function-calling\">Responses tool calls and results</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/migrate-to-responses\">Responses migration guide</a></li></ul></section>",
      "reviewed_article_sha256": "9b324bb382b90b96b9228f87d3ba54628a3edadc3d6b17e80978b6fc6dabd947",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "revision_hash": "sha256:a00383c3e39aa2e4846da4b723ba9d9b5f3ce21637386d3d17d2373bb77fdfe9",
      "revision_number": 1
    },
    {
      "stable_id": "ksr-openai-retry-errors-2026-09-02",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "OpenAI API retry error contract",
      "change_type": "breaking_api_change",
      "severity": "high",
      "affected_components": "HTTP status; error.type; error.code; Retry-After; retry loops; pre-stream failures",
      "affected_audience": "Teams maintaining OpenAI API clients and retry handlers.",
      "region": "OpenAI API documentation; no account or region-specific runtime test.",
      "announcement_date": "2026-09-02",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "",
      "access_regional_impact": "No account access, region-specific rollout or current Sora availability was established.",
      "migration_path": "Inspect status and error code; update throttling and overload handlers; respect Retry-After and bound retries while preserving earlier responses.",
      "recommended_alternative": "Adjust the existing client retry logic; no alternative model or paid capacity tier is required by this record.",
      "previous_status": "Some endpoints used 503/slow_down for both rapid traffic growth and temporary overload.",
      "new_status": "Traffic growth can return 429/slow_down; temporary model overload uses 503/server_is_overloaded. Billing and quota errors require separate action.",
      "official_source": "https://developers.openai.com/api/docs/changelog",
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "calendar_milestones": "[]",
      "correction_history": "",
      "required_action": "Inspect HTTP status and error.code. Handle 429/slow_down separately from 503/server_is_overloaded; honor a valid Retry-After as a minimum, otherwise use exponential backoff with jitter. Reduce and gradually ramp traffic for slow_down. Bound attempts and total retry time, account for SDK retries, and defer rather than shorten a valid server delay. Preserve legacy handlers while needed; exclude billing/quota errors and do not automatically replay consumed streams.",
      "recommended_action": "Inspect HTTP status and error.code. Handle 429/slow_down separately from 503/server_is_overloaded; honor a valid Retry-After as a minimum, otherwise use exponential backoff with jitter. Reduce and gradually ramp traffic for slow_down. Bound attempts and total retry time, account for SDK retries, and defer rather than shorten a valid server delay. Preserve legacy handlers while needed; exclude billing/quota errors and do not automatically replay consumed streams.",
      "migration_impact": "Inspect HTTP status and error.code. Handle 429/slow_down separately from 503/server_is_overloaded; honor a valid Retry-After as a minimum, otherwise use exponential backoff with jitter. Reduce and gradually ramp traffic for slow_down. Bound attempts and total retry time, account for SDK retries, and defer rather than shorten a valid server delay. Preserve legacy handlers while needed; exclude billing/quota errors and do not automatically replay consumed streams.",
      "source_summary": "Rapid traffic growth uses 429/slow_down; model overload uses 503/server_is_overloaded. Clients must inspect both status and code.",
      "first_detected_note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change.",
      "official_sources": [
        "https://developers.openai.com/api/docs/guides/rate-limits",
        "https://developers.openai.com/api/docs/guides/error-codes",
        "https://developers.openai.com/api/docs/changelog",
        "https://developers.openai.com/api/docs/guides/deployment-checklist"
      ],
      "id": 932397,
      "event_id": "ksr-openai-retry-errors-2026-09-02",
      "title": "OpenAI distinguishes rapid traffic growth from model overload",
      "url": "https://kingy.ai/ai-launch-tracker/openai-api-retry-errors-slow-down-model-overload/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-api-retry-errors-slow-down-model-overload/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-api-retry-errors-slow-down-model-overload/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-api-retry-errors-slow-down-model-overload/",
      "event_type": "breaking_api_change",
      "materiality": "high",
      "announced_at": "2026-09-02",
      "effective_at": "",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "incompatible_behavior",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4634,
      "previous": {
        "status": "Some endpoints used 503/slow_down for both rapid traffic growth and temporary overload."
      },
      "new": {
        "status": "Traffic growth can return 429/slow_down; temporary model overload uses 503/server_is_overloaded. Billing and quota errors require separate action."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change."
      },
      "kingy_verdict": "OpenAI API clients should handle 429/slow_down and 503/server_is_overloaded separately. Inspect the error code, respect a valid Retry-After delay and bound the total retry work. Preserve older handlers while needed; billing and quota failures require corrective action.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-02",
          "status": "confirmed",
          "precision": "date",
          "label": "Official retry error notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/rate-limits"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/error-codes"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/changelog"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/deployment-checklist"
        }
      ],
      "rss_guid": "ksr-openai-retry-errors-2026-09-02",
      "published_at": "2026-10-06T03:48:54Z",
      "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>OpenAI API clients should handle 429/slow_down and 503/server_is_overloaded separately. Inspect the error code, respect a valid Retry-After delay and bound the total retry work. Preserve older handlers while needed; billing and quota failures require corrective action.</p></section><section class=\"action\"><h2>Required action</h2><p>Inspect HTTP status and error.code. Handle 429/slow_down separately from 503/server_is_overloaded; honor a valid Retry-After as a minimum, otherwise use exponential backoff with jitter. Reduce and gradually ramp traffic for slow_down. Bound attempts and total retry time, account for SDK retries, and defer rather than shorten a valid server delay. Preserve legacy handlers while needed; exclude billing/quota errors and do not automatically replay consumed streams.</p></section><section><h2>Read the status and error code</h2><p>Rapid traffic growth can return HTTP 429 with type rate_limit_error and code slow_down. Temporary model overload uses HTTP 503 with type service_unavailable_error and code server_is_overloaded. A slow_down response can occur within your requests-per-minute and tokens-per-minute limits. Reduce traffic and increase it gradually. If model overload persists, increase the delay between retries.</p></section><section><h2>Honor the server delay</h2><p>Treat a valid Retry-After value as a minimum wait and add a small random delay. If it is missing or invalid, use exponential backoff with jitter. If the valid delay exceeds your supported or configured maximum, defer the request rather than retry sooner.</p></section><section><h2>Bound the whole retry operation</h2><p>Limit attempts and total elapsed time. If the application manages retries, disable SDK retries or include them in those limits so nested loops do not multiply requests. SDK support for long server delays varies by version and configuration. An SDK may return the original HTTP error when it declines a delay; cancellation and timeout errors remain separate. A timeout for each attempt is not necessarily a deadline for the full operation.</p></section><section><h2>Keep compatibility with earlier responses</h2><p>Some endpoints previously used 503/slow_down for both traffic growth and overload. Handle both 429 and 503, inspect the error body and keep older response handling while your application can still receive it. No SDK-wide retry default change or complete endpoint rollout is established by this review.</p></section><section><h2>Separate errors that need action</h2><p>Billing, spend and quota errors are not ordinary transient retries. Inspect error.code even when the broader error.type is insufficient_quota. Retrying alone will not restore access.</p></section><section><h2>Do not replay consumed streams</h2><p>The HTTP errors described here apply before streaming begins. Later failures can arrive as stream events. Do not automatically replay a request after consuming output. Video requests rejected before job creation and errors reported within an existing job are separate cases. Documentation about video error handling does not establish current Sora availability.</p></section><section><h2>Notice date and evidence limits</h2><p>September 2, 2026 is the documented notice date. No mandatory migration or retirement deadline is established, and this record adds no calendar milestone. Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. The fuller retry guidance was also present in retained September 27 evidence; it is not a newly dated incident. Kingy has not run account-specific requests, reproduced errors or tested SDK retry defaults for this record.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/guides/rate-limits\">Rate limits and retry behavior</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/error-codes\">HTTP status and error-code reference</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">September 2 API error notice</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/deployment-checklist\">Deployment retry guidance</a></li></ul></section>",
      "reviewed_article_sha256": "82340718f7c2ffafecf4d63a76eeda7b19eaf8c59ec75fd83bd2870bc381facc",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "revision_hash": "sha256:fb47ddeebb03d0b4f48533539a6b15a19f99c3ee278b6031054fdabee164b89b",
      "revision_number": 1
    },
    {
      "stable_id": "ksr-openai-project-key-governance-2026-09-10",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "OpenAI project API keys",
      "change_type": "access_change",
      "severity": "medium",
      "affected_components": "Project API-key expiration; maximum lifetime; permitted new-key types; credential rotation",
      "affected_audience": "Administrators and teams creating or rotating OpenAI project API keys under configured organization or project policies.",
      "region": "OpenAI API documentation; no account or region-specific runtime test.",
      "announcement_date": "2026-09-10",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "",
      "access_regional_impact": "Configured organization and project restrictions determine the impact. Plan entitlements and region-specific rollout were not verified.",
      "migration_path": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
      "recommended_alternative": "Review existing organization and project policy with the appropriate administrator; no alternative provider or paid upgrade is established as necessary.",
      "previous_status": "Earlier account policies and key lifetimes were not reconstructed; no universal prior behavior is claimed.",
      "new_status": "OpenAI documents configurable project-key expiration and maximum lifetimes on September 10, and new-key creation restrictions on September 15. Organization restrictions bound project settings. Existing keys are unaffected by creation controls; this is no guarantee against expiration or revocation.",
      "official_source": "https://developers.openai.com/api/docs/changelog",
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "last_checked": "2026-10-05",
      "last_verified": "2026-10-05",
      "superseded_state": "active",
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "calendar_milestones": "[]",
      "correction_history": "",
      "required_action": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
      "recommended_action": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
      "migration_impact": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
      "source_summary": "OpenAI documents configurable project-key expiration and maximum lifetimes on September 10, and new-key creation restrictions on September 15. Organization restrictions bound project settings. Existing keys are unaffected by creation controls; this is no guarantee against expiration or revocation.",
      "first_detected_note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change.",
      "official_sources": [
        "https://developers.openai.com/api/docs/guides/production-best-practices",
        "https://developers.openai.com/api/docs/changelog",
        "https://developers.openai.com/api/docs/guides/error-codes"
      ],
      "id": 932402,
      "event_id": "ksr-openai-project-key-governance-2026-09-10",
      "title": "OpenAI adds project-key expiry and key-creation restrictions",
      "url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
      "event_type": "access_change",
      "materiality": "medium",
      "announced_at": "2026-09-10",
      "effective_at": "",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "auth_change",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4634,
      "previous": {
        "status": "Earlier account policies and key lifetimes were not reconstructed; no universal prior behavior is claimed."
      },
      "new": {
        "status": "OpenAI documents configurable project-key expiration and maximum lifetimes on September 10, and new-key creation restrictions on September 15. Organization restrictions bound project settings. Existing keys are unaffected by creation controls; this is no guarantee against expiration or revocation."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change."
      },
      "kingy_verdict": "OpenAI project-key automation needs to respect configured expiry limits and permitted key types. Check those policies before rotating credentials: creation restrictions can block a replacement. Existing keys are unaffected by creation controls, but can still expire or be revoked.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-09-10",
          "status": "confirmed",
          "precision": "date",
          "label": "Project-key expiry and maximum-lifetime notice"
        },
        {
          "kind": "announced",
          "date": "2026-09-15",
          "status": "confirmed",
          "precision": "date",
          "label": "New-key creation governance notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/production-best-practices"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/changelog"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/error-codes"
        }
      ],
      "rss_guid": "ksr-openai-project-key-governance-2026-09-10",
      "published_at": "2026-10-06T04:46:16Z",
      "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>OpenAI project-key automation needs to respect configured expiry limits and permitted key types. Check those policies before rotating credentials: creation restrictions can block a replacement. Existing keys are unaffected by creation controls, but can still expire or be revoked.</p></section><section class=\"action\"><h2>Required action</h2><p>Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.</p></section><section><h2>September 10: expiration and maximum lifetimes</h2><p>The September 10, 2026 changelog notice documents expiration dates when creating project API keys and administrator-configured maximum lifetimes. New keys must expire within the configured maximum. A project cannot set a longer lifetime than its organization allows. The evidence establishes neither a numeric default lifetime nor retroactive expiry dates for existing keys.</p></section><section><h2>September 15: restrictions on new-key creation</h2><p>The September 15, 2026 notice documents three creation policies: service-account keys only, user-owned project keys only, or no new keys. Organization restrictions take precedence. Projects may add restrictions but cannot loosen the corresponding organization policy. Existing keys are unaffected by these creation controls; that does not protect them from expiration or revocation.</p></section><section><h2>Check policy before rotation</h2><p>OpenAI recommends creating a replacement, updating applications, verifying that it works, then revoking the old key. Operational inference: disabling new-key creation or prohibiting the required key type can obstruct that replacement workflow. Resolve the policy dependency with the appropriate administrator before attempting rotation. Kingy has not tested this consequence against an account.</p></section><section><h2>Diagnose authentication failures without guessing</h2><p>The error reference describes invalid, expired or revoked credentials as possible authentication failures. This review establishes no dedicated project-key expiry error code. An authentication failure alone does not prove that an expiry or governance setting caused it. Do not transfer project-key policy behavior to OAuth, Admin API keys or other credential surfaces.</p></section><section><h2>Two notice dates, no universal deadline</h2><p>September 10 and September 15 are separate documented notice dates. No universal expiry or mandatory migration deadline is established, and this record adds no calendar milestone. Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. These controls create conditional operational risks when configured; this is not an automatic breaking change for every existing integration.</p></section><section><h2>Evidence limits</h2><p>Kingy has not accessed account settings, key material, administrator entitlements, plan availability or private telemetry. No key was created, rotated, used, revoked, tested or expired. The evidence does not establish a universal outage, enforced organization policy or complete rollout.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/guides/production-best-practices\">Project-key expiry, governance and rotation guidance</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">September 10 and September 15 notices</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/error-codes\">Authentication error reference</a></li></ul></section>",
      "reviewed_article_sha256": "14b87b1d9804d779f1886dc81cf86d54a705484a8c8b34fc188f32f8e7bb840b",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "admission_note": "Conditional operational risk when a customer configures these controls; do not characterize it as an automatic breaking change for every existing integration.",
      "revision_hash": "sha256:849d06e4e2f51de3d26f3171ac6046a7ecbfdc8ab7c5457a21560ac79e87147c",
      "revision_number": 1
    },
    {
      "stable_id": "ksr-openai-reusable-prompts-2026-11-30",
      "vendor": "OpenAI",
      "product": "OpenAI API",
      "model_version": "Reusable prompt objects; v1/prompts",
      "change_type": "retirement",
      "severity": "high",
      "affected_components": "Reusable prompt objects; v1/prompts; saved prompt IDs, versions and variables",
      "affected_audience": "Teams whose OpenAI API integrations depend on managed reusable prompt objects.",
      "region": "OpenAI dashboard and API prompt-object scope; account access and regional runtime untested.",
      "announcement_date": "2026-06-03",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "2026-11-30",
      "access_regional_impact": "No account entitlement, regional exception or exact cutoff timezone was established.",
      "migration_path": "Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.",
      "recommended_alternative": "Store prompt content and versioning in application code and generate Responses input/instructions directly.",
      "previous_status": "Reusable prompt objects are deprecated with a future scheduled shutdown; runtime not tested.",
      "new_status": "Reusable prompt objects and v1/prompts are scheduled to shut down November 30, 2026.",
      "official_source": "https://developers.openai.com/api/docs/deprecations",
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "last_checked": "2026-10-06",
      "last_verified": "2026-10-06",
      "superseded_state": "active",
      "vendor_relationship_id": "912958",
      "product_relationship_id": "912981",
      "entity_url": "https://kingy.ai/ai-tools/openai-api/",
      "calendar_milestones": "[]",
      "correction_history": [],
      "required_action": "Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.",
      "recommended_action": "Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.",
      "migration_impact": "Callers relying on managed prompt objects need a replacement for that dependency before the listed shutdown; request behavior has not been tested.",
      "source_summary": "OpenAI announced reusable-prompt deprecation on June 3, 2026. The documented November 30 shutdown covers reusable prompt objects and v1/prompts. Move managed prompt content into application-owned code before that date.",
      "first_detected_note": "Historical first-detection date is unverified. The June 3 notice and this source review do not establish when Kingy first detected the change.",
      "official_sources": [
        "https://developers.openai.com/api/docs/deprecations",
        "https://developers.openai.com/api/docs/guides/prompting/migrate-from-prompt-object",
        "https://developers.openai.com/api/docs/guides/prompting",
        "https://developers.openai.com/api/docs/assistants/migration",
        "https://developers.openai.com/api/docs/changelog"
      ],
      "id": 932431,
      "event_id": "ksr-openai-reusable-prompts-2026-11-30",
      "title": "OpenAI reusable prompt objects and v1/prompts are scheduled to shut down November 30, 2026",
      "url": "https://kingy.ai/ai-launch-tracker/openai-reusable-prompts-api-shutdown-november-30-2026/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-reusable-prompts-api-shutdown-november-30-2026/",
      "article_url": "https://kingy.ai/ai-launch-tracker/openai-reusable-prompts-api-shutdown-november-30-2026/",
      "record_url": "https://kingy.ai/ai-launch-tracker/openai-reusable-prompts-api-shutdown-november-30-2026/",
      "event_type": "retirement",
      "materiality": "high",
      "announced_at": "2026-06-03",
      "effective_at": "",
      "deadline_at": "2026-11-30",
      "observed_at": "",
      "lifecycle_state": "upcoming",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "availability_loss",
      "admission_state": "reviewed_public_record",
      "featured_media_id": 4634,
      "previous": {
        "status": "Reusable prompt objects are deprecated with a future scheduled shutdown; runtime not tested."
      },
      "new": {
        "status": "Reusable prompt objects and v1/prompts are scheduled to shut down November 30, 2026."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first-detection date is unverified. The June 3 notice and this source review do not establish when Kingy first detected the change."
      },
      "kingy_verdict": "Treat saved OpenAI prompt objects as a migration dependency before November 30. Move their content and variables into application code, then validate the generated requests before changing production callers. A completed Assistants migration can still leave this separate dependency in place.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-06-03",
          "status": "confirmed",
          "precision": "date"
        },
        {
          "kind": "migration_deadline",
          "date": "2026-11-30",
          "status": "scheduled",
          "precision": "date",
          "label": "Reusable prompt objects and v1/prompts scheduled shutdown"
        }
      ],
      "source_attribution": [
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/deprecations"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/prompting/migrate-from-prompt-object"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/guides/prompting"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/assistants/migration"
        },
        {
          "publisher": "OpenAI",
          "url": "https://developers.openai.com/api/docs/changelog"
        }
      ],
      "rss_guid": "ksr-openai-reusable-prompts-2026-11-30",
      "published_at": "2026-10-06T16:53:56Z",
      "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>Treat saved OpenAI prompt objects as a migration dependency before November 30. Move their content and variables into application code, then validate the generated requests before changing production callers. A completed Assistants migration can still leave this separate dependency in place.</p></section><section class=\"action\"><h2>Required action</h2><p>Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.</p></section><section><h2>What is scheduled to change</h2><p>OpenAI announced the reusable-prompt deprecation on June 3, 2026. Its current schedule lists November 30, 2026 for shutdown of reusable prompt objects and v1/prompts. The notice covers the managed prompt feature used through the dashboard and API. It gives a date without an exact cutoff time or timezone.</p></section><section><h2>Move the prompt into your application</h2><p>Inventory the saved prompt IDs, versions and variables that callers depend on. OpenAI recommends storing prompt content in code, replacing variables with explicit function arguments, and passing generated content directly through Responses input and instructions. Version the helpers with the application and test representative requests before switching callers.</p></section><section><h2>Read the Assistants migration caveat</h2><p>The official Assistants migration page retains a create-prompt step, followed by a warning that reusable prompt objects are also deprecated. Use the current prompt-object migration guide when planning a lasting replacement. Evals has its own October 31 read-only milestone; that date does not belong to reusable prompts. Agent Builder also has a November 30 shutdown, for a separate product.</p></section><section><h2>Keep caching expectations testable</h2><p>The migration guide recommends placing static prompt content before dynamic content because cache hits depend on exact prefixes. Moving prompts into code alone establishes no cache hit, latency improvement or cost saving. Its code examples do not establish a required model upgrade or tested compatibility with your installed SDK.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. The June 3 notice and this source review do not establish when Kingy first detected the change. No account, saved prompt, SDK request, migration, response quality, cache hit or cost was tested. This record describes a scheduled change; it does not confirm that a shutdown has occurred.</p></section><section><h2>Related Kingy coverage</h2><p>Our <a href=\"https://kingy.ai/ai-launch-tracker/openai-assistants-api-reaches-its-migration-deadline-august-26/\">Assistants migration article</a> already warns about this separate prompt-object deadline. This record covers the reusable-prompt dependency; the Assistants article keeps its own history and migration scope.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/deprecations\">Reusable-prompt notice and shutdown schedule</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/prompting/migrate-from-prompt-object\">Migrate from prompt objects</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/prompting\">Store prompts in application code</a></li><li><a href=\"https://developers.openai.com/api/docs/assistants/migration\">Assistants migration warning</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">June 3 announcement</a></li></ul></section>",
      "reviewed_article_sha256": "7798ad70267b505938522f7c2ea25c23fa2b063c3b621672ac94df5770b22c11",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "admission_note": "Documented future loss of the managed prompt-object dependency; actual publication admission has not been performed.",
      "revision_hash": "sha256:09b79c00615277bedb12df81005d188ad1e1f2b4b6c6d65e342c5ac09ed382e1",
      "revision_number": 1
    },
    {
      "stable_id": "ksr-anthropic-haiku-5-5-migration-2026-10-07",
      "vendor": "Anthropic",
      "product": "Claude API",
      "model_version": "claude-haiku-5-5",
      "change_type": "breaking_api_change",
      "severity": "high",
      "affected_components": "Haiku 4.5 to claude-haiku-5-5; Messages API; thinking; sampling; prefill; computer-use toolset; conversation history",
      "affected_audience": "Teams maintaining Claude API integrations in the documented scope.",
      "region": "Documented platform scope; account access and regional availability not inspected.",
      "announcement_date": "2026-10-07",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "",
      "access_regional_impact": "No account entitlement or regional deployment is established by this source review.",
      "migration_path": "Before switching a Messages API integration, audit thinking and sampling fields, block parsing, assistant prefill, tool routing and stored history. Recount prompts with the target model and revisit output limits and the applicable pricing tier. Validate the exact platform and client before production migration.",
      "recommended_alternative": "Use the documented configuration for this exact surface; validate before production changes.",
      "previous_status": "Haiku 4.5 clients may use manual thinking budgets, sampling settings, assistant prefill and older computer-use declarations.",
      "new_status": "Haiku 5.5 documents incompatible request and history behavior; migration is opt-in and forced tool choice is accepted.",
      "official_source": "https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide",
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "last_checked": "2026-10-07",
      "last_verified": "2026-10-07",
      "superseded_state": "active",
      "vendor_relationship_id": "913004",
      "product_relationship_id": "913011",
      "entity_url": "https://kingy.ai/ai-tools/claude-api/",
      "calendar_milestones": "[]",
      "correction_history": [],
      "required_action": "Before switching a Messages API integration, audit thinking and sampling fields, block parsing, assistant prefill, tool routing and stored history. Recount prompts with the target model and revisit output limits and the applicable pricing tier. Validate the exact platform and client before production migration.",
      "recommended_action": "Before switching a Messages API integration, audit thinking and sampling fields, block parsing, assistant prefill, tool routing and stored history. Recount prompts with the target model and revisit output limits and the applicable pricing tier. Validate the exact platform and client before production migration.",
      "migration_impact": "Before switching a Messages API integration, audit thinking and sampling fields, block parsing, assistant prefill, tool routing and stored history. Recount prompts with the target model and revisit output limits and the applicable pricing tier. Validate the exact platform and client before production migration.",
      "source_summary": "Messages API code moving from Haiku 4.5 to Haiku 5.5 needs request and response-handling changes. Manual thinking budgets and assistant prefill fail, adaptive thinking is the default, and token counts and conversation-history rules change.",
      "first_detected_note": "Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change.",
      "official_sources": [
        "https://platform.claude.com/docs/en/release-notes/overview.md",
        "https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide",
        "https://platform.claude.com/docs/en/models/haiku-5-5/whats-new-haiku-5-5",
        "https://platform.claude.com/docs/en/build-with-claude/thinking",
        "https://platform.claude.com/docs/en/about-claude/pricing.md",
        "https://platform.claude.com/docs/en/models/overview.md"
      ],
      "id": 932572,
      "event_id": "ksr-anthropic-haiku-5-5-migration-2026-10-07",
      "title": "Haiku 5.5 migrations require thinking, sampling and history changes",
      "url": "https://kingy.ai/ai-launch-tracker/claude-haiku-5-5-api-migration-thinking-sampling/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/claude-haiku-5-5-api-migration-thinking-sampling/",
      "article_url": "https://kingy.ai/ai-launch-tracker/claude-haiku-5-5-api-migration-thinking-sampling/",
      "record_url": "https://kingy.ai/ai-launch-tracker/claude-haiku-5-5-api-migration-thinking-sampling/",
      "event_type": "breaking_api_change",
      "materiality": "high",
      "announced_at": "2026-10-07",
      "effective_at": "",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "incompatible_behavior",
      "admission_state": "native_quality_passed_public_noindex",
      "featured_media_id": 932571,
      "previous": {
        "status": "Haiku 4.5 clients may use manual thinking budgets, sampling settings, assistant prefill and older computer-use declarations."
      },
      "new": {
        "status": "Haiku 5.5 documents incompatible request and history behavior; migration is opt-in and forced tool choice is accepted."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change."
      },
      "kingy_verdict": "Haiku 5.5 needs a client migration for integrations that use manual thinking budgets, sampling controls or assistant prefill. Review request fields, response parsing and conversation storage together before changing the model ID. Forced tool choice remains supported, and no mandatory migration deadline is established.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-10-07",
          "status": "confirmed",
          "precision": "date",
          "label": "Official change notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/release-notes/overview.md"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/haiku-5-5/whats-new-haiku-5-5"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/build-with-claude/thinking"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/about-claude/pricing.md"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/models/overview.md"
        }
      ],
      "rss_guid": "ksr-anthropic-haiku-5-5-migration-2026-10-07",
      "published_at": "2026-10-08T03:24:34+00:00",
      "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>Haiku 5.5 needs a client migration for integrations that use manual thinking budgets, sampling controls or assistant prefill. Review request fields, response parsing and conversation storage together before changing the model ID. Forced tool choice remains supported, and no mandatory migration deadline is established.</p></section><section><h2>Required action</h2><p>Before switching a Messages API integration, audit thinking and sampling fields, block parsing, assistant prefill, tool routing and stored history. Recount prompts with the target model and revisit output limits and the applicable pricing tier. Validate the exact platform and client before production migration.</p></section><section><h2>Scope and notice</h2><p>Anthropic documented the change on October 7, 2026. This checklist covers Messages API code moving from Haiku 4.5 to claude-haiku-5-5. The migration guide says Claude Managed Agents users need only update the model name for this model migration. Platform model IDs differ; use the identifier documented for your provider.</p></section><section><h2>Thinking and response parsing</h2><p>Replace thinking: {&quot;type&quot;: &quot;enabled&quot;, &quot;budget_tokens&quot;: N} with adaptive thinking; manual budgets return HTTP 400. Adaptive thinking is on by default. Select response blocks by type rather than reading the first block as the answer, and pass thinking blocks back unmodified with tool results. Thinking counts toward max_tokens, so a small limit can end before any answer text. Thinking text is empty by default; use display: &quot;summarized&quot; if you need the documented summarized display. Thinking can be disabled at high effort or below; disabled thinking at xhigh or max returns HTTP 400.</p></section><section><h2>Sampling, prefill and forced tools</h2><p>Omit temperature, top_p and top_k. If temperature is sent, only 1 is accepted; if top_p is sent, only 0.99 is accepted. Sending both, any top_k, or other values returns HTTP 400. End messages with a user turn instead of an assistant prefill. Haiku 5.5 accepts forced tool_choice, including any or a named tool: the response starts with the tool call and has no thinking block. Use auto if the model should be able to think before calling a tool. Sonnet-specific forced-tool restrictions do not apply here.</p></section><section><h2>Computer use and stored conversations</h2><p>On the Claude API and Google Cloud, replace computer_20250124 with computer_toolset_20260801 and follow the guide’s agent-loop and header changes. Other platforms need their own compatibility checks. Replay thinking blocks through the producing account or a linked account; another account’s request can succeed after the block is dropped. Keep system, tools and earlier messages unchanged when replaying thinking blocks. For accounts created before August 31, 2026 at 00:00 UTC, the prefix-change error applies only to requests that set thinking.block_binding.prefix_mismatch_behavior.</p></section><section><h2>Token budgets and capacity</h2><p>Recount prompts with the target model: the same text uses more tokens, and old max_tokens limits and cost estimates need review. The first-party pricing table separates prompts up to 100,000 tokens from prompts over 100,000 tokens; no single flat rate is assumed here. Handle stop_reason: &quot;refusal&quot;; server-side fallback is unavailable. Haiku 4.5 Priority Tier commitments need separate capacity planning because Haiku 5.5 does not support Priority Tier.</p></section><section><h2>No scheduled retirement</h2><p>The model table’s “not sooner than October 7, 2027” commitment is a lower bound, not a scheduled shutdown. This migration record creates no calendar milestone or deadline.</p></section><section><h2>Evidence limits</h2><p>Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change. These are documented behaviors. Kingy has not run an inference, account, migration, entitlement, performance or billing test for this packet.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview.md\">release-notes/overview.md</a></li><li><a href=\"https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide\">models/haiku-5-5/migration-guide</a></li><li><a href=\"https://platform.claude.com/docs/en/models/haiku-5-5/whats-new-haiku-5-5\">models/haiku-5-5/whats-new-haiku-5-5</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/thinking\">build-with-claude/thinking</a></li><li><a href=\"https://platform.claude.com/docs/en/about-claude/pricing.md\">about-claude/pricing.md</a></li><li><a href=\"https://platform.claude.com/docs/en/models/overview.md\">models/overview.md</a></li></ul></section>",
      "reviewed_article_sha256": "248d980503d7335ab18ca0357a71f7473da3be01b0207d6605a79d7983cf1859",
      "indexability_hold": "awaiting_bound_site_quality_review",
      "reproduction_status": "not_tested",
      "revision_number": 3,
      "modified_at": "2026-10-08T03:24:34+00:00",
      "revision_hash": "sha256:e569eb3cdcceb77ce65fe0c75215f33263b6c21c9c1b082c8cb440be0983a293"
    },
    {
      "stable_id": "ksr-anthropic-managed-agents-networking-2026-10-07",
      "vendor": "Anthropic",
      "product": "Claude Managed Agents",
      "model_version": "Cloud environments; limited networking",
      "change_type": "breaking_api_change",
      "severity": "high",
      "affected_components": "Claude Managed Agents; cloud environments; limited networking; allowed_hosts; web_search; web_fetch; enabled-tool allowed_domains",
      "affected_audience": "Teams maintaining Claude Managed Agents integrations in the documented scope.",
      "region": "Documented platform scope; account access and regional availability not inspected.",
      "announcement_date": "2026-10-07",
      "announcement_date_basis": "official_notice_dated",
      "effective_date": "",
      "migration_deadline": "",
      "access_regional_impact": "No account entitlement or regional deployment is established by this source review.",
      "migration_path": "Review environment allowed_hosts alongside each enabled web tool’s allowed_domains. Remove inconsistent entries or allow only the hosts the workflow needs, accounting for the different matching rules and the sandbox access each added host permits. Check session validation and denied-fetch handling before relying on the workflow.",
      "recommended_alternative": "Use the documented configuration for this exact surface; validate before production changes.",
      "previous_status": "Per-tool domain restrictions could be configured separately from the environment networking list.",
      "new_status": "Limited cloud environment allowed_hosts also constrains server-side web tools; inconsistent enabled-tool allowed_domains entries fail session creation or an update that adds them.",
      "official_source": "https://platform.claude.com/docs/en/managed-agents/tools-web-restrictions",
      "evidence_strength": "strong",
      "first_detected": null,
      "first_detected_basis": "historical_unverified",
      "last_checked": "2026-10-07",
      "last_verified": "2026-10-07",
      "superseded_state": "active",
      "vendor_relationship_id": "913004",
      "product_relationship_id": "",
      "entity_url": "",
      "calendar_milestones": "[]",
      "correction_history": [],
      "required_action": "Review environment allowed_hosts alongside each enabled web tool’s allowed_domains. Remove inconsistent entries or allow only the hosts the workflow needs, accounting for the different matching rules and the sandbox access each added host permits. Check session validation and denied-fetch handling before relying on the workflow.",
      "recommended_action": "Review environment allowed_hosts alongside each enabled web tool’s allowed_domains. Remove inconsistent entries or allow only the hosts the workflow needs, accounting for the different matching rules and the sandbox access each added host permits. Check session validation and denied-fetch handling before relying on the workflow.",
      "migration_impact": "Review environment allowed_hosts alongside each enabled web tool’s allowed_domains. Remove inconsistent entries or allow only the hosts the workflow needs, accounting for the different matching rules and the sandbox access each added host permits. Check session validation and denied-fetch handling before relying on the workflow.",
      "source_summary": "Managed Agents cloud environments using limited networking now apply allowed_hosts to server-side web_search and web_fetch. A mismatched enabled-tool allowed_domains entry can also make session creation or an update fail with HTTP 400.",
      "first_detected_note": "Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change.",
      "official_sources": [
        "https://platform.claude.com/docs/en/release-notes/overview.md",
        "https://platform.claude.com/docs/en/managed-agents/tools-web-restrictions",
        "https://platform.claude.com/docs/en/managed-agents/environments",
        "https://platform.claude.com/docs/en/managed-agents/tools"
      ],
      "id": 932575,
      "event_id": "ksr-anthropic-managed-agents-networking-2026-10-07",
      "title": "Managed Agents limited networking now restricts web search and fetch",
      "url": "https://kingy.ai/ai-launch-tracker/claude-managed-agents-limited-networking-web-tools/",
      "canonical_url": "https://kingy.ai/ai-launch-tracker/claude-managed-agents-limited-networking-web-tools/",
      "article_url": "https://kingy.ai/ai-launch-tracker/claude-managed-agents-limited-networking-web-tools/",
      "record_url": "https://kingy.ai/ai-launch-tracker/claude-managed-agents-limited-networking-web-tools/",
      "event_type": "breaking_api_change",
      "materiality": "high",
      "announced_at": "2026-10-07",
      "effective_at": "",
      "deadline_at": "",
      "observed_at": "",
      "lifecycle_state": "active",
      "publication_eligible": true,
      "record_class": "operational_breakage",
      "breakage_mode": "incompatible_behavior",
      "admission_state": "native_quality_passed_public_noindex",
      "featured_media_id": 932574,
      "previous": {
        "status": "Per-tool domain restrictions could be configured separately from the environment networking list."
      },
      "new": {
        "status": "Limited cloud environment allowed_hosts also constrains server-side web tools; inconsistent enabled-tool allowed_domains entries fail session creation or an update that adds them."
      },
      "detection_history": {
        "status": "unverified",
        "note": "Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change."
      },
      "kingy_verdict": "Managed Agents workflows using limited networking can lose web results or fail session validation when the environment and tool domain lists disagree. Review both lists before adding hosts, because each allowed host also becomes reachable from the sandbox. This change does not apply to unrestricted networking or self-hosted environments.",
      "time_points": [
        {
          "kind": "announced",
          "date": "2026-10-07",
          "status": "confirmed",
          "precision": "date",
          "label": "Official change notice"
        }
      ],
      "source_attribution": [
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/release-notes/overview.md"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/managed-agents/tools-web-restrictions"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/managed-agents/environments"
        },
        {
          "publisher": "Anthropic",
          "url": "https://platform.claude.com/docs/en/managed-agents/tools"
        }
      ],
      "rss_guid": "ksr-anthropic-managed-agents-networking-2026-10-07",
      "published_at": "2026-10-08T03:24:36+00:00",
      "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>Managed Agents workflows using limited networking can lose web results or fail session validation when the environment and tool domain lists disagree. Review both lists before adding hosts, because each allowed host also becomes reachable from the sandbox. This change does not apply to unrestricted networking or self-hosted environments.</p></section><section><h2>Required action</h2><p>Review environment allowed_hosts alongside each enabled web tool’s allowed_domains. Remove inconsistent entries or allow only the hosts the workflow needs, accounting for the different matching rules and the sandbox access each added host permits. Check session validation and denied-fetch handling before relying on the workflow.</p></section><section><h2>Scope and notice</h2><p>The October 7, 2026 release note applies to Claude Managed Agents cloud environments configured with limited networking. web_search and web_fetch run on Anthropic’s servers, but the environment’s allowed_hosts now constrains them too. Unrestricted networking and self-hosted environments are outside this change. The per-tool domain lists remain additional restrictions.</p></section><section><h2>Runtime results and empty host lists</h2><p>A web_fetch request to an unmatched host returns a url_not_allowed tool error. web_search omits results from unmatched hosts. If allowed_hosts lists no hosts, neither tool returns a page or search result. allow_package_managers and allow_mcp_servers add no hosts for these server-side web tools.</p></section><section><h2>Session validation</h2><p>Creating a session fails with HTTP 400 when an enabled web tool’s allowed_domains contains an entry outside allowed_hosts. A session update that adds such an entry also fails. Remove the inconsistent domain entry or add the required host to allowed_hosts after reviewing the access that grants.</p></section><section><h2>The lists match differently</h2><p>A per-tool domain entry covers the named host and its subdomains. An environment allowed_hosts entry matches an exact host unless it starts with *. For example, the tool domain docs.example.com does not fit within environment [&quot;example.com&quot;], but it fits within [&quot;docs.example.com&quot;] or [&quot;*.example.com&quot;]. The environment wildcard covers subdomains, not the bare domain. Use wildcard syntax only where the environment field accepts it; the per-tool domain list does not accept wildcards.</p></section><section><h2>Review the sandbox impact</h2><p>Adding a host to allowed_hosts for web tools also opens that host to the sandbox. Keep the list limited to the hosts the workflow needs. Messages API organization-level web search and fetch settings in the Claude Console are separate and do not apply to Managed Agents sessions.</p></section><section><h2>Additional web-fetch condition</h2><p>Anthropic’s October 7 release note also documents a separate prior-context check for web_fetch. An allowed host alone does not guarantee a fetch: the URL must already appear through qualifying session context, such as user-message text or web results. A URL appearing only in model output, the system prompt, an attached document, or bash/read/MCP output does not qualify and can return url_not_in_prior_context. The release note directs callers to supply the URL in user.message text. Kingy has not runtime-tested this condition; the linked tools guide did not yet repeat it at the October 7 evening review. The exclusions for unrestricted networking and self-hosted environments above describe the environment-host restriction; this notice does not establish the same exceptions for the separate context check.</p></section><section><h2>Evidence limits</h2><p>Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change. The documentation establishes the notice date and described behavior, but no precise rollout timestamp or migration deadline is asserted. Kingy has not created a session, tested network access or inspected an account for this packet.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview.md\">release-notes/overview.md</a></li><li><a href=\"https://platform.claude.com/docs/en/managed-agents/tools-web-restrictions\">managed-agents/tools-web-restrictions</a></li><li><a href=\"https://platform.claude.com/docs/en/managed-agents/environments\">managed-agents/environments</a></li><li><a href=\"https://platform.claude.com/docs/en/managed-agents/tools\">managed-agents/tools (guide checked)</a></li></ul></section>",
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              "actor": "stack-radar-canonical-controller",
              "result": "claims_rechecked_holds_preserved",
              "finding": "Six exact SDK versions, stable response shapes, omitted legacy beta headers, whole-Skill deletion and BetaContainerSkill rename remain documented; explicit beta-header exception retained.",
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            "2026-10-01 source review: Keep August 27 notice, unverified detection history and September 30 historical deadline. Disclose current-source ambiguity rather than assert shutdown. Previous guidance: Google’s August 27, 2026 notice schedules gemini-omni-flash-preview for shutdown on September 30, 2026 and names gemini-omni-1.1-flash as the replacement. Action: Replace gemini-omni-flash-preview with gemini-omni-1.1-flash and regression-test multimodal behavior, tool use, latency and cost before September 30.",
            "2026-10-07 scoped correction: Google’s current table gives October 22, 2026 as the earliest possible shutdown for gemini-omni-flash-preview and recommends gemini-omni-1.1-flash. The August 27 notice calls September 30 deprecation. The September 27 observation of a September 30 shutdown deadline is retained as historical evidence; runtime availability remains untested and unconfirmed."
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                "title": "Gemini Omni Flash Preview September 30 deadline passed; shutdown unconfirmed",
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                    "previousAction": "Replace gemini-omni-flash-preview with gemini-omni-1.1-flash and regression-test multimodal behavior, tool use, latency and cost before September 30.",
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          "affected_components": "gemini-2.5-flash-image",
          "affected_audience": "Gemini API developers whose image-generation integrations call the exact gemini-2.5-flash-image ID.",
          "region": "Gemini API image model; no project-specific access or regional exception verified",
          "announcement_date": "",
          "announced_at": "",
          "effective_date": "",
          "effective_at": "",
          "migration_deadline": "2027-03-15",
          "deadline_at": "2027-03-15",
          "previous_status": "Deprecated; the listed shutdown date has not yet passed.",
          "new_status": "Google lists March 15, 2027 as the earliest possible shutdown date; actual runtime state is unconfirmed.",
          "previous": {
            "status": "Deprecated; the listed shutdown date has not yet passed."
          },
          "new": {
            "status": "Google lists March 15, 2027 as the earliest possible shutdown date; actual runtime state is unconfirmed."
          },
          "required_action": "Inventory calls to gemini-2.5-flash-image and plan migration before the listed earliest possible shutdown date, March 15, 2027. Validate Google’s recommended gemini-3.1-flash-lite-image for the affected project, outputs, SDK and pricing before switching callers.",
          "recommended_action": "Inventory calls to gemini-2.5-flash-image and plan migration before the listed earliest possible shutdown date, March 15, 2027. Validate Google’s recommended gemini-3.1-flash-lite-image for the affected project, outputs, SDK and pricing before switching callers.",
          "migration_path": "Google now recommends gemini-3.1-flash-lite-image for this exact model. Validate project access, image-output requirements, request compatibility and applicable pricing; the recommendation does not establish migration readiness or runtime availability.",
          "recommended_alternative": "Google now recommends gemini-3.1-flash-lite-image for this exact model. Validate project access, image-output requirements, request compatibility and applicable pricing; the recommendation does not establish migration readiness or runtime availability.",
          "access_regional_impact": "Google’s current table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image. No exact shutdown time, project-specific access, regional exception or runtime state was verified.",
          "migration_impact": "Google’s current table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image. No exact shutdown time, project-specific access, regional exception or runtime state was verified.",
          "official_source": "https://ai.google.dev/gemini-api/docs/deprecations",
          "official_sources": [
            "https://ai.google.dev/gemini-api/docs/deprecations",
            "https://ai.google.dev/gemini-api/docs/pricing",
            "https://ai.google.dev/gemini-api/docs/models/gemini-2.5-flash-image",
            "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-image",
            "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-lite-image"
          ],
          "source_attribution": [
            {
              "publisher": "Official vendor source",
              "url": "https://ai.google.dev/gemini-api/docs/deprecations"
            },
            {
              "publisher": "Official vendor source",
              "url": "https://ai.google.dev/gemini-api/docs/pricing"
            },
            {
              "publisher": "Official vendor source",
              "url": "https://ai.google.dev/gemini-api/docs/models/gemini-2.5-flash-image"
            },
            {
              "publisher": "Official vendor source",
              "url": "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-image"
            },
            {
              "publisher": "Official vendor source",
              "url": "https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-lite-image"
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          ],
          "evidence_strength": "strong",
          "first_detected": "2026-09-21",
          "last_checked": "2026-10-05",
          "last_verified": "2026-10-05",
          "correction_history": [
            "2026-10-06 scoped correction: A genuine source change was observed between the retained October 6 captures at 16:25:13Z and 18:30:15Z; this interval does not establish Google’s exact edit time. The table moved this exact image model from October 2, 2026 to March 15, 2027 (earliest possible) and changed the recommendation from gemini-nano-banana-2.1 to gemini-3.1-flash-lite-image. Older Kingy prose about a retired-preview replacement conflict remains historical evidence, not the current recommendation. No runtime or project access was tested. Retained typed subject holds about the October 2 date and retired-preview replacement are historical wording; their payloads remain unchanged. Current guidance is March 15, 2027 at the earliest, with gemini-3.1-flash-lite-image recommended. Admission and runtime holds remain."
          ],
          "superseded_state": "active",
          "source_summary": "Google’s current deprecation table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image and recommends gemini-3.1-flash-lite-image. The previously displayed October 2 date and replacement-conflict description are historical.",
          "lifecycle_state": "upcoming",
          "publication_eligible": true,
          "record_class": "operational_breakage",
          "breakage_mode": "availability_loss",
          "admission_state": "admitted",
          "featured_media_id": 2406,
          "time_points": [
            {
              "date": "2027-03-15",
              "kind": "migration_deadline",
              "status": "listed_earliest",
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          "revision_hash": "sha256:eb3556129ae37a8157c3a56dfd65ebbe83bffd3dc0ef12f06cb882f1aef2a414",
          "revision_number": 5,
          "record_url": "https://kingy.ai/ai-launch-tracker/gemini-2-5-flash-image-retirement-october-2-2026/",
          "kingy_verdict": "Use March 15, 2027 as Google’s listed earliest possible shutdown date for this exact image model. Validate the recommended gemini-3.1-flash-lite-image against your project before migration. The changed schedule does not establish current account access or successful runtime behavior.",
          "announcement_date_basis": "official_notice_undated"
        },
        "typed": {
          "classifications": {
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          "consequence": "Google’s current table lists March 15, 2027 as the earliest possible shutdown date for gemini-2.5-flash-image. No exact shutdown time, project-specific access, regional exception or runtime state was verified.",
          "requiredAction": "Inventory calls to gemini-2.5-flash-image and plan migration before the listed earliest possible shutdown date, March 15, 2027. Validate Google’s recommended gemini-3.1-flash-lite-image for the affected project, outputs, SDK and pricing before switching callers.",
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          "holds": {
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            "detection": [
              {
                "code": "runtime_not_tested",
                "reason": "No vendor API or live integration migration was run."
              }
            ],
            "subject": [
              {
                "code": "scope_limit",
                "reason": "Present October 2 as Google’s announced/listed date, subject to the lifecycle page’s earliest-date caveat."
              },
              {
                "code": "scope_limit",
                "reason": "Do not recommend the retired gemini-3.1-flash-image-preview ID from the lifecycle replacement column."
              },
              {
                "code": "scope_limit",
                "reason": "Do not treat similarly named Gemini 2.5 Flash text models as deprecated; Google’s separate access note does not override this image-model notice."
              },
              {
                "code": "scope_limit",
                "reason": "No project-specific model access or image-output equivalence was tested."
              }
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          "reviewedAt": "2026-09-22T21:54:49Z",
          "verificationHistory": [
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              "actor": "stack-radar-canonical-controller",
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              "verifiedAt": "2026-10-02T05:19:40Z",
              "actor": "stack-radar-canonical-controller",
              "result": "claims_rechecked_holds_preserved",
              "finding": "October 2 is tomorrow; earliest-date caveat and stale retired-preview replacement conflict remain. Stable 3.1 Flash Image and Lite Image documented separately; exact-project access/equivalence untested. Do not apply text 2.5 non-deprecation note to the image ID.",
              "previousRevisionHash": "sha256:46cfaedc06f0b994cb901534f003903f01305da1e5792684f0e3b257c8609312"
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          "timePoints": [
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              "date": "2027-03-15",
              "status": "listed_earliest",
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              "note": "A genuine source change was observed between the retained October 6 captures at 16:25:13Z and 18:30:15Z; this interval does not establish Google’s exact edit time. The table moved this exact image model from October 2, 2026 to March 15, 2027 (earliest possible) and changed the recommendation from gemini-nano-banana-2.1 to gemini-3.1-flash-lite-image. Older Kingy prose about a retired-preview replacement conflict remains historical evidence, not the current recommendation. No runtime or project access was tested.",
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              "previousEditorialSummary": "Google lists October 2 for gemini-2.5-flash-image. Its pricing page names stable Gemini 3.1 Flash Image options; the lifecycle replacement cell points to a preview that the same table dates as retired June 25.",
              "previousEditorialMigration": "Validate gemini-3.1-flash-image or gemini-3.1-flash-lite-image for the affected project. Do not select the retired gemini-3.1-flash-image-preview ID listed in the lifecycle replacement cell.",
              "correctedAt": "2026-10-06T19:27:00Z",
              "previousRevisionHash": "sha256:904479df4f1d81718d661b9e0036f76129eaf6d4c1445a42a51fe449a45fa0cf",
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                  "retainedPayload": {
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                    "reason": "Present October 2 as Google’s announced/listed date, subject to the lifecycle page’s earliest-date caveat."
                  },
                  "currentApplicability": "Historical wording retained unchanged; current date/replacement are governed by this scoped source correction. No admission or runtime hold is released."
                },
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                  "retainedPayload": {
                    "code": "scope_limit",
                    "reason": "Do not recommend the retired gemini-3.1-flash-image-preview ID from the lifecycle replacement column."
                  },
                  "currentApplicability": "Historical wording retained unchanged; current date/replacement are governed by this scoped source correction. No admission or runtime hold is released."
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          "event_id": "ksr-google-antigravity-05-2026-2026-10-05",
          "title": "Antigravity May preview is scheduled to retire October 5",
          "url": "https://kingy.ai/ai-launch-tracker/antigravity-may-preview-retirement-october-5-2026/",
          "canonical_url": "https://kingy.ai/ai-launch-tracker/antigravity-may-preview-retirement-october-5-2026/",
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          "event_type": "retirement",
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          "materiality": "high",
          "affected_components": "antigravity-preview-05-2026, antigravity-preview-09-2026",
          "affected_audience": "Gemini API Interactions clients using antigravity-preview-05-2026, especially local tool integrations and function_call parsers.",
          "region": "Gemini API managed agent; no regional exception documented",
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          "announced_at": "2026-09-17",
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          "effective_at": "",
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          "previous": {
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          "new": {
            "status": "Scheduled for retirement on 2026-10-05."
          },
          "required_action": "Inventory use of the exact May preview ID. Update to the September preview. Regression-test local tool handlers and function_call parsers where used; remote output-only clients can update the agent ID.",
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          "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Inventory the three exact IDs in deployed configuration. Test the mapped replacement on the supported API surface before April 1; review request fields, tool routing, outputs, latency and cost.</p></section><section><h2>Exact IDs and replacements</h2><div class=\"table-wrap\"><table><thead><tr><th>Retiring API ID</th><th>Documented replacement</th><th>Shutdown date</th></tr></thead><tbody><tr><td>gpt-5.3-codex</td><td>gpt-6-sol</td><td>2027-04-01</td></tr><tr><td>gpt-5.1</td><td>gpt-6-sol</td><td>2027-04-01</td></tr><tr><td>gpt-5.4-nano</td><td>gpt-6-luna</td><td>2027-04-01</td></tr></tbody></table></div></section><section><h2>What the notice covers</h2><p>The October 1 notice lists three exact API model IDs and an April 1, 2027 shutdown date. It does not announce the retirement of every GPT-5 model, every Codex snapshot, or a ChatGPT subscription feature.</p></section><section><h2>Test each mapped replacement</h2><p>Keep the three mappings separate. The GPT-6 Sol and Luna model cards recommend Responses for built-in tools and function calling. Chat Completions supports function calling only when reasoning_effort is none. For a tool-using application, review its API route as well as its model name. Validate request fields, output parsing and representative tasks before switching.</p></section><section><h2>What has not been established</h2><p>Kingy has not called these models, checked an account entitlement or reproduced a migration. The documented replacement does not prove equal output, price, latency or regional access. This candidate does not require a pricing claim to explain the deadline.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.</p><ul><li>Exact IDs only; unrelated snapshots, aliases, ChatGPT and partner-serving schedules are excluded.</li><li>No model availability, runtime retirement, account entitlement or migration was tested.</li><li>Supported endpoint and tool-routing guidance is specific to the documented Sol and Luna targets.</li><li>No price or output-equivalence claim is made.</li></ul></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/deprecations\">2026-10-01: GPT-5.3-Codex</a></li><li><a href=\"https://developers.openai.com/api/docs/deprecations.md\">2026-10-01: GPT-5.3-Codex</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-6-sol.md\">function calling</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-6-luna.md\">function calling</a></li></ul></section>",
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              "No vendor runtime or account test was performed."
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            "subject": [
              "No Audio speech endpoint support is established for this recommended Realtime model by its current card.",
              "No exact voice, file format, latency, cost or output equivalence was tested.",
              "Scope is the four listed IDs; no family-wide or unlisted-alias shutdown claim.",
              "January 20 legacy audio and February 26 transcription remain separate events.",
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          "recommended_action": "Before routing a workflow to claude-sonnet-5-5, audit thinking settings, tool-choice assumptions, append-only history, streaming content-block parsing, computer tools and advisor models. Validate the affected platform and effort setting.",
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          "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Before routing a workflow to claude-sonnet-5-5, audit thinking settings, tool-choice assumptions, append-only history, streaming content-block parsing, computer tools and advisor models. Validate the affected platform and effort setting.</p></section><section><h2>Migration checklist</h2><div class=\"table-wrap\"><table><thead><tr><th>Affected assumption</th><th>Documented Sonnet 5.5 behavior</th><th>Action</th></tr></thead><tbody><tr><td>thinking.type=disabled</td><td>Rejected; between_tools only at low/medium/high</td><td>Use between_tools there, or adaptive thinking for xhigh/max.</td></tr><tr><td>Extra between_tools fields or per-turn effort changes</td><td>display/budget_tokens/block_binding and changed effort are rejected</td><td>Keep effort fixed; use adaptive where those controls are needed.</td></tr><tr><td>tool_choice any/tool</td><td>Returns 400; auto and none are supported</td><td>Audit code that requires a forced call; auto is not a call guarantee.</td></tr><tr><td>Editable replayed history</td><td>Prefix validation has account-age and opt-in conditions</td><td>Keep system, tools and earlier messages unchanged; inspect configured mismatch handling.</td></tr><tr><td>Thinking from another model or account</td><td>Unreadable model/account blocks are dropped; requests can succeed</td><td>Track silent loss of reasoning; retain documented compatibility and linked-account exceptions.</td></tr><tr><td>computer_20251124</td><td>Not accepted on Claude API or Google Cloud</td><td>Follow the platform-specific computer-use migration guidance.</td></tr><tr><td>Advisor set includes Opus 4.8, Opus 4.7 or Sonnet 5</td><td>Those advisors are rejected</td><td>Choose a documented supported advisor; verify access.</td></tr><tr><td>Inter-tool progress arrives as text</td><td>Progress arrives in thinking blocks; default display omits it</td><td>Parse by block type and review display/summary handling.</td></tr></tbody></table></div></section><section><h2>Thinking configuration and effort</h2><p>The September 28 release and Sonnet migration guide document adaptive thinking by default. disabled and manual enabled budgets are not supported. between_tools turns off up-front thinking at low, medium or high effort. It rejects xhigh/max and extra display, budget_tokens or block_binding fields; it also requires the effort level to stay fixed during the conversation.</p></section><section><h2>Forced tool choice</h2><p>tool_choice values any and tool return a 400 error. auto and none are supported. Strict tool schemas can help validate tool input, but auto plus strict is not a guarantee that a tool will be called. Review workflows that require a specific external action.</p></section><section><h2>Three history rules with different outcomes</h2><p>Model compatibility, prefix integrity and account binding are separate checks. Unsupported model blocks are dropped rather than proving a failed request. Sonnet 5.5 blocks also work only in their originating account or a linked account; another account’s request can succeed after the blocks are dropped. Earlier models’ blocks do not acquire this new account rule.</p></section><section><h2>Prefix checks depend on account age and configuration</h2><p>For accounts created on or after August 31, 2026 at 00:00 UTC, prefix checking is on by default on Claude API, Bedrock and Google Cloud. Earlier accounts opt in by setting prefix_mismatch_behavior. Ordinary enforced prefix mismatches default to a 400; Message Batches drops failing blocks when that field is unset. The beta controls and mismatch reporting require thinking-binding-controls-2026-08-01. Sonnet’s block_binding controls require adaptive thinking; they cannot be added to between_tools.</p></section><section><h2>Preserve history without claiming all models share reasoning</h2><p>Keep the system prompt, tools and earlier messages stable and append new turns. Pass thinking blocks back unchanged, including empty blocks. Model-switch compatibility is selective: Sonnet 5.5 can read Sonnet 5, Opus 4.8, Haiku 4.5 and earlier blocks, but not Opus 5/5.5 or Fable/Mythos blocks. Only Opus 5.5 on Claude API and Google Cloud is documented here to read Sonnet 5.5 thinking when switching away.</p></section><section><h2>Computer tools, advisors and streaming</h2><p>The older computer_20251124 tool is rejected on Claude API and Google Cloud; do not transfer that restriction to every partner. The advisor tool rejects Opus 4.8, Opus 4.7 and Sonnet 5. Progress between tool calls arrives in thinking blocks, with text omitted by default. Review response parsing and streaming display rather than assuming a quiet stream means no progress.</p></section><section><h2>No fixed migration deadline</h2><p>This is a model-migration record, separate from the Sonnet 4.5 November 30 retirement candidate. September 28 is the dated release notice, not an invented shutdown deadline. Kingy has not reproduced errors, tested SDK behavior or checked any account entitlement.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. This packet was prepared from retained and newly retrieved official evidence; preparation and retrieval dates are not substituted for first detection.</p><ul><li>No vendor API, SDK, account entitlement or runtime failure was tested.</li><li>Do not transfer Sonnet 5.5 rules from or onto Opus, Fable or Mythos by analogy.</li><li>The prefix default threshold, older-account opt-in, Message Batches exception and required beta header remain explicit.</li><li>Model/account mismatch drops and prefix rejection are distinct; linked-account and model-compatibility exceptions remain.</li><li>Computer-tool rejection is limited to the documented Claude API/Google Cloud surfaces.</li><li>No migration deadline is invented. Sonnet 4.5’s retirement candidate remains separate.</li></ul></section><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview\">September 28, 2026</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-5-5/whats-new-sonnet-5-5\">Forced tool use</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide\">between_tools</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/preserved-thinking\">Keeping the prefix unchanged</a></li></ul></section>",
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          "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Find claude-sonnet-4-5-20250929 in deployed configuration and usage logs. Validate Sonnet 5.5 on representative workflows before the listed November 30 retirement, including request fields, tools, thinking history and output parsing.</p></section><section><h2>Deadline and replacement</h2><div class=\"table-wrap\"><table><tbody><tr><th scope=\"row\">Deprecated Claude API ID</th><td>claude-sonnet-4-5-20250929</td></tr><tr><th scope=\"row\">Official notice</th><td>September 30, 2026</td></tr><tr><th scope=\"row\">Listed retirement</th><td>November 30, 2026 (scheduled; status table says tentative)</td></tr><tr><th scope=\"row\">Recommended replacement</th><td>claude-sonnet-5-5</td></tr></tbody></table></div></section><section><h2>What the notice covers</h2><p>Anthropic’s September 30 notice names claude-sonnet-4-5-20250929 and recommends claude-sonnet-5-5. The retiring model is currently documented as deprecated. This is a scheduled Claude API retirement; Kingy has not tested runtime availability.</p></section><section><h2>Keep the date and platform limits</h2><p>The retirement history and release note say November 30, 2026; the current status table labels its retirement-date column tentative. Amazon Bedrock and Google Cloud set separate schedules. Check the provider actually serving your configured model.</p></section><section><h2>Prepare the Sonnet 4.5 migration</h2><p>Use the Sonnet 5.5 guide’s sections for 4.5 and earlier callers. Audit thinking and effort settings, forced-tool assumptions, assistant prefills, replayed history, tool-input parsing and structured-output fields. Computer-use changes depend on the platform. Recount tokens and validate output and cost on your workloads.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. The notice, source retrieval and local review dates do not establish when Kingy first detected this change. No model inference, account entitlement or migration was tested. Replacement guidance does not establish compatible output, access or cost.</p></section><p>See the <a href=\"https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/\">existing Sonnet 5.5 migration report</a> for the separate API-behavior changes.</p><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/about-claude/model-deprecations\">Model deprecations</a></li><li><a href=\"https://platform.claude.com/docs/en/about-claude/model-deprecations.md\">Deprecation table (Markdown)</a></li><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview\">September 30 release note</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-4-5/overview\">Sonnet 4.5 model overview</a></li><li><a href=\"https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide\">Sonnet 5.5 migration guide</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/preserved-thinking\">Preserved thinking</a></li></ul></section>",
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              "Historical first detection is unverified; October 1 review is not a detection date.",
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              "Sole writer, exact identity, media and normal publication checks required before publication; no bound Site Quality approval is fabricated."
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          "required_action": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
          "recommended_action": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
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          "migration_path": "Audit exact model IDs, tool-choice assumptions, supported schema features, append-only history and target-specific thinking routes. Check account-age, beta-header and Message Batches behavior. Validate the serving account and platform before switching.",
          "migration_impact": "Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.",
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          "reviewed_article_html": "<section class=\"action\"><h2>Required action</h2><p>Before routing a workflow to claude-fable-5-1 or claude-mythos-5-1, audit forced-tool requests, history edits and fallback routes. Keep replayed thinking unchanged and history append-only. Validate access, retention and schema-feature availability for the serving account and platform.</p></section><section><h2>Replace forced tool choice</h2><p>Both exact 5.1 models reject tool_choice types any and tool with a 400 invalid_request_error. auto and none remain supported. The migration guide applies this validation to Messages, Message Batches and token counting. Use auto with explicit tool instructions; it does not guarantee a call. Strict tools or structured outputs can enforce schema validity where available. In CMEK organizations, the guide excludes structured outputs, including strict tools, on Claude Fable models.</p></section><section><h2>Check model routes explicitly</h2><p>A block’s producing model and the receiving model determine whether its thinking can be read. Opus 5.5 and Sonnet 5.5 cannot read Fable/Mythos thinking. On the Claude API, Fable 5.1 and Mythos 5.1 can read Opus 5.5 thinking. Do not extend that reverse route to other platforms or assume that a newer release reads every older model’s blocks. The API drops unreadable blocks; that model mismatch alone does not reject the whole request.</p></section><section><h2>Keep Fable history stable</h2><p>Fable 5.1 checks the system prompt, tools and messages preceding replayed thinking. Edits can invalidate later blocks. Mythos 5.1 does not run this prefix check. Enforcement defaults on for accounts created on or after August 31, 2026 at 00:00 UTC; older accounts opt in by setting prefix_mismatch_behavior. Keep history append-only and pass complete thinking blocks back unchanged.</p></section><section><h2>Handle prefix mismatches by surface</h2><p>The thinking-binding-controls-2026-08-01 beta header enables mismatch settings and transformation reporting. Where Fable’s prefix check is enforced, ordinary requests default to error unless drop_block is chosen. In Message Batches, leaving the setting unset drops failing blocks instead; explicitly setting error makes the item fail. Dropping blocks loses reasoning and does not repair the history edit. Monitor input_transformations for these losses.</p></section><section><h2>Verify access and retention</h2><p>Mythos 5.1 is limited to organizations verified through Anthropic’s verification programs, such as the Cyber Verification Program. Both models require 30-day retention unless Anthropic expressly authorizes an exception. The migration guide documents a Claude API validation error when required retention is absent. Account entitlement, retention configuration and platform feature support need their own checks.</p></section><section><h2>No shutdown deadline</h2><p>September 1, 2026 is the documented launch and API-change notice. This is an opt-in migration record. No mandatory migration or retirement deadline is established.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. Kingy has not reproduced an API error or tested inference, SDK behavior, migration, account access, retention or output equivalence.</p></section><p>The <a href=\"https://kingy.ai/ai-launch-tracker/claude-sonnet-5-5-thinking-tool-history-api-migration/\">Sonnet 5.5 migration report</a> covers a separate target model. Its account, effort and platform rules do not become Fable/Mythos rules by analogy.</p><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/models/fable-5-1/whats-new-fable-5-1\">Fable 5.1 changes</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/thinking\">Thinking compatibility</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/preserved-thinking\">Prefix checks and mismatch handling</a></li><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview\">September 1 release notice</a></li><li><a href=\"https://platform.claude.com/docs/en/models/opus-5-5/migration-guide\">Opus 5.5 model-routing limits</a></li><li><a href=\"https://platform.claude.com/docs/en/models/fable-5-1/migration-guide\">Fable/Mythos migration guide</a></li></ul></section><section><h2>Scoped access correction (2026-10-07)</h2><p>2026-10-07 scoped access correction: Anthropic now limits Mythos 5.1 to organizations verified through its verification programs, such as the Cyber Verification Program. Previous Glasswing-only statement retained as dated history from the October 5 review. Retention, runtime, account-entitlement and indexability holds remain; no full-record freshness renewal.</p><p>Historical wording from the October 5 review: Mythos 5.1 is restricted to approved Project Glasswing customers.</p><p>Source: <a href=\"https://platform.claude.com/docs/en/models/mythos-5-1/overview\">Mythos 5.1 overview</a>.</p></section>",
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              "Fable prefix checking defaults on for accounts created from August 31, 2026 00:00 UTC; older-account enforcement depends on request settings. Preserve this distinction.",
              "Do not claim every newer model can read Fable thinking: current Opus 5.5 guidance documents exceptions.",
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              "No original vendor edit timestamp is inferred from a capture difference."
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          "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>GPT-6 Astra is not a drop-in replacement for callers that rely on unsupported sampling fields or Chat Completions tools. Audit request parameters and move tool workflows to Responses before switching, then validate on representative tasks. This is an opt-in migration with no retirement deadline.</p></section><section class=\"action\"><h2>Required action</h2><p>Inventory gpt-6-astra callers, reasoning settings, sampling/log-probability fields and tool routes. Use a supported reasoning effort; omit temperature, top_p and top_logprobs, remove Chat Completions logprobs or the Responses message.output_text.logprobs include entry as applicable, and migrate tool definitions/results to Responses. Validate on representative tasks before switching production.</p></section><section><h2>Choose supported reasoning effort</h2><p>For gpt-6-astra, the model card lists low, medium, high, xhigh and max. The none setting is unsupported. The migration guide recommends low when moving from none or minimal, followed by evaluation on representative tasks. Use reasoning.effort in Responses or reasoning_effort in Chat Completions.</p></section><section><h2>Remove unsupported request fields</h2><p>Remove temperature, top_p and top_logprobs from Astra requests. In Chat Completions, also remove logprobs. In Responses, remove message.output_text.logprobs from include while preserving other supported include entries. These are documented migration requirements; Kingy has not reproduced an API error.</p></section><section><h2>Move tools to Responses</h2><p>Chat Completions supports Astra requests without tools. Tool integrations require Responses. Model-card function-calling support does not establish tool support on every endpoint. Migrate tool definitions and input/output Item handling together, including function_call_output results linked to the originating call_id.</p></section><section><h2>Keep the model scope exact</h2><p>This record applies to gpt-6-astra. Do not transfer its restrictions to Sol or Luna. Current guides also discuss GPT-6.1 Sol, which is outside this record. This article does not claim that existing model integrations are being retired.</p></section><section><h2>No mandatory deadline</h2><p>September 3, 2026 is the documented migration notice date. This is an opt-in migration, not a retirement of existing models. No mandatory migration or retirement deadline is established, and this record adds no calendar milestone.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. No account, inference, migration, SDK, billing, cache or monitoring test was performed. Prompt caching, misalignment monitoring, Fast/Ultrafast modes, regional processing and pricing need separate implementation checks.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/guides/latest-model\">Astra migration requirements</a></li><li><a href=\"https://developers.openai.com/api/docs/models/gpt-6-astra\">GPT-6 Astra model card</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">September 3 migration notice</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/function-calling\">Responses tool calls and results</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/migrate-to-responses\">Responses migration guide</a></li></ul></section>",
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          "consequence": "Adopting gpt-6-astra requires a supported reasoning effort and removal of unsupported sampling/log-probability options. Chat Completions can serve requests without tools; Astra tool integrations must use Responses and its input/output Item shapes.",
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          "sources": [
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              "sourceId": "source:ksr-openai-gpt-6-astra-migration-2026-09-03:1",
              "url": "https://developers.openai.com/api/docs/guides/latest-model",
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              "capturedAt": "2026-10-06T01:56:45.143611+00:00",
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              "Do not apply Astra restrictions to Sol or Luna; their none-mode tool support differs.",
              "This is an opt-in migration change, not a retirement of existing models.",
              "Prompt caching and monitoring need separate detailed implementation checks; this review did not test an integration."
            ],
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              "Separate Chat Completions logprobs from the Responses include entry; preserve other supported include entries.",
              "Model-card function-calling support is not proof of Chat Completions tool compatibility.",
              "Tool migration includes input/output Items and call_id-linked results, not just endpoint selection.",
              "Current guides mention GPT-6.1 Sol too; this record stays scoped to gpt-6-astra.",
              "Existing historical model-document capture observations are distinct from this migration notice and cannot establish its first detection."
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              "Prompt caching, misalignment monitoring, Fast/Ultrafast modes, regional processing and pricing are separate implementation checks; this narrow record does not claim coverage of them.",
              "A future publisher still needs exact private draft/slug/ledger collision checks and disclosure/indexability bindings. No post ID or hold release is assigned by this review."
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              "Exact private canonical event/slug identity, current relationships/media and actual publication admission remain unverified for this local candidate. No bound indexability approval is supplied."
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              "url": "https://developers.openai.com/api/docs/guides/error-codes"
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          "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>OpenAI API clients should handle 429/slow_down and 503/server_is_overloaded separately. Inspect the error code, respect a valid Retry-After delay and bound the total retry work. Preserve older handlers while needed; billing and quota failures require corrective action.</p></section><section class=\"action\"><h2>Required action</h2><p>Inspect HTTP status and error.code. Handle 429/slow_down separately from 503/server_is_overloaded; honor a valid Retry-After as a minimum, otherwise use exponential backoff with jitter. Reduce and gradually ramp traffic for slow_down. Bound attempts and total retry time, account for SDK retries, and defer rather than shorten a valid server delay. Preserve legacy handlers while needed; exclude billing/quota errors and do not automatically replay consumed streams.</p></section><section><h2>Read the status and error code</h2><p>Rapid traffic growth can return HTTP 429 with type rate_limit_error and code slow_down. Temporary model overload uses HTTP 503 with type service_unavailable_error and code server_is_overloaded. A slow_down response can occur within your requests-per-minute and tokens-per-minute limits. Reduce traffic and increase it gradually. If model overload persists, increase the delay between retries.</p></section><section><h2>Honor the server delay</h2><p>Treat a valid Retry-After value as a minimum wait and add a small random delay. If it is missing or invalid, use exponential backoff with jitter. If the valid delay exceeds your supported or configured maximum, defer the request rather than retry sooner.</p></section><section><h2>Bound the whole retry operation</h2><p>Limit attempts and total elapsed time. If the application manages retries, disable SDK retries or include them in those limits so nested loops do not multiply requests. SDK support for long server delays varies by version and configuration. An SDK may return the original HTTP error when it declines a delay; cancellation and timeout errors remain separate. A timeout for each attempt is not necessarily a deadline for the full operation.</p></section><section><h2>Keep compatibility with earlier responses</h2><p>Some endpoints previously used 503/slow_down for both traffic growth and overload. Handle both 429 and 503, inspect the error body and keep older response handling while your application can still receive it. No SDK-wide retry default change or complete endpoint rollout is established by this review.</p></section><section><h2>Separate errors that need action</h2><p>Billing, spend and quota errors are not ordinary transient retries. Inspect error.code even when the broader error.type is insufficient_quota. Retrying alone will not restore access.</p></section><section><h2>Do not replay consumed streams</h2><p>The HTTP errors described here apply before streaming begins. Later failures can arrive as stream events. Do not automatically replay a request after consuming output. Video requests rejected before job creation and errors reported within an existing job are separate cases. Documentation about video error handling does not establish current Sora availability.</p></section><section><h2>Notice date and evidence limits</h2><p>September 2, 2026 is the documented notice date. No mandatory migration or retirement deadline is established, and this record adds no calendar milestone. Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. The fuller retry guidance was also present in retained September 27 evidence; it is not a newly dated incident. Kingy has not run account-specific requests, reproduced errors or tested SDK retry defaults for this record.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/guides/rate-limits\">Rate limits and retry behavior</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/error-codes\">HTTP status and error-code reference</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">September 2 API error notice</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/deployment-checklist\">Deployment retry guidance</a></li></ul></section>",
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              "url": "https://developers.openai.com/api/docs/guides/rate-limits",
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              "Billing, spend and quota errors are not ordinary transient retries.",
              "Video pre-job errors and errors inside an existing job are distinct. Documentation about video error handling does not establish current Sora availability.",
              "No SDK-wide retry default change is claimed."
            ],
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              "The original September 2 notice is unchanged; the fuller recovery guidance below is present in retained September 27 evidence too and is not a newly dated incident.",
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              "Bound both attempts and elapsed time, including nested SDK retries.",
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              "No current Sora availability claim is inferred from video error documentation.",
              "A shared changelog URL does not make the October 5 HIPAA collector observation a duplicate of this September 2 retry notice."
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            "review_limitations": [
              "Public-only collision review; private posts, drafts, slugs and the publisher ledger were not inspected.",
              "No account-specific behavior, rollout completeness, SDK defaults or recovery performance was tested.",
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            "publication": [
              "Private event/slug collisions, current relationship/media validity and actual publication admission require fresh publisher checks. Bound indexability approval is not supplied."
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        "recordUrl": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
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          "affected_components": "Project API-key expiration; maximum lifetime; permitted new-key types; credential rotation",
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          "region": "OpenAI API documentation; no account or region-specific runtime test.",
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          "access_regional_impact": "Configured organization and project restrictions determine the impact. Plan entitlements and region-specific rollout were not verified.",
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          "calendar_milestones": "[]",
          "correction_history": "",
          "required_action": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
          "recommended_action": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
          "migration_impact": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
          "source_summary": "OpenAI documents configurable project-key expiration and maximum lifetimes on September 10, and new-key creation restrictions on September 15. Organization restrictions bound project settings. Existing keys are unaffected by creation controls; this is no guarantee against expiration or revocation.",
          "first_detected_note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change.",
          "official_sources": [
            "https://developers.openai.com/api/docs/guides/production-best-practices",
            "https://developers.openai.com/api/docs/changelog",
            "https://developers.openai.com/api/docs/guides/error-codes"
          ],
          "id": 932402,
          "event_id": "ksr-openai-project-key-governance-2026-09-10",
          "title": "OpenAI adds project-key expiry and key-creation restrictions",
          "url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
          "canonical_url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
          "article_url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
          "record_url": "https://kingy.ai/ai-launch-tracker/openai-project-api-key-expiry-creation-governance/",
          "event_type": "access_change",
          "materiality": "medium",
          "announced_at": "2026-09-10",
          "effective_at": "",
          "deadline_at": "",
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          "lifecycle_state": "active",
          "publication_eligible": true,
          "record_class": "operational_breakage",
          "breakage_mode": "auth_change",
          "admission_state": "reviewed_public_record",
          "featured_media_id": 4634,
          "previous": {
            "status": "Earlier account policies and key lifetimes were not reconstructed; no universal prior behavior is claimed."
          },
          "new": {
            "status": "OpenAI documents configurable project-key expiration and maximum lifetimes on September 10, and new-key creation restrictions on September 15. Organization restrictions bound project settings. Existing keys are unaffected by creation controls; this is no guarantee against expiration or revocation."
          },
          "detection_history": {
            "status": "unverified",
            "note": "Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change."
          },
          "kingy_verdict": "OpenAI project-key automation needs to respect configured expiry limits and permitted key types. Check those policies before rotating credentials: creation restrictions can block a replacement. Existing keys are unaffected by creation controls, but can still expire or be revoked.",
          "time_points": [
            {
              "kind": "announced",
              "date": "2026-09-10",
              "status": "confirmed",
              "precision": "date",
              "label": "Project-key expiry and maximum-lifetime notice"
            },
            {
              "kind": "announced",
              "date": "2026-09-15",
              "status": "confirmed",
              "precision": "date",
              "label": "New-key creation governance notice"
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          ],
          "source_attribution": [
            {
              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/guides/production-best-practices"
            },
            {
              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/changelog"
            },
            {
              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/guides/error-codes"
            }
          ],
          "published_at": "2026-10-06T04:46:16Z",
          "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>OpenAI project-key automation needs to respect configured expiry limits and permitted key types. Check those policies before rotating credentials: creation restrictions can block a replacement. Existing keys are unaffected by creation controls, but can still expire or be revoked.</p></section><section class=\"action\"><h2>Required action</h2><p>Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.</p></section><section><h2>September 10: expiration and maximum lifetimes</h2><p>The September 10, 2026 changelog notice documents expiration dates when creating project API keys and administrator-configured maximum lifetimes. New keys must expire within the configured maximum. A project cannot set a longer lifetime than its organization allows. The evidence establishes neither a numeric default lifetime nor retroactive expiry dates for existing keys.</p></section><section><h2>September 15: restrictions on new-key creation</h2><p>The September 15, 2026 notice documents three creation policies: service-account keys only, user-owned project keys only, or no new keys. Organization restrictions take precedence. Projects may add restrictions but cannot loosen the corresponding organization policy. Existing keys are unaffected by these creation controls; that does not protect them from expiration or revocation.</p></section><section><h2>Check policy before rotation</h2><p>OpenAI recommends creating a replacement, updating applications, verifying that it works, then revoking the old key. Operational inference: disabling new-key creation or prohibiting the required key type can obstruct that replacement workflow. Resolve the policy dependency with the appropriate administrator before attempting rotation. Kingy has not tested this consequence against an account.</p></section><section><h2>Diagnose authentication failures without guessing</h2><p>The error reference describes invalid, expired or revoked credentials as possible authentication failures. This review establishes no dedicated project-key expiry error code. An authentication failure alone does not prove that an expiry or governance setting caused it. Do not transfer project-key policy behavior to OAuth, Admin API keys or other credential surfaces.</p></section><section><h2>Two notice dates, no universal deadline</h2><p>September 10 and September 15 are separate documented notice dates. No universal expiry or mandatory migration deadline is established, and this record adds no calendar milestone. Historical first-detection date is unverified. Publication and source-check dates do not establish when Kingy first detected this change. These controls create conditional operational risks when configured; this is not an automatic breaking change for every existing integration.</p></section><section><h2>Evidence limits</h2><p>Kingy has not accessed account settings, key material, administrator entitlements, plan availability or private telemetry. No key was created, rotated, used, revoked, tested or expired. The evidence does not establish a universal outage, enforced organization policy or complete rollout.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/guides/production-best-practices\">Project-key expiry, governance and rotation guidance</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">September 10 and September 15 notices</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/error-codes\">Authentication error reference</a></li></ul></section>",
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          "reproduction_status": "not_tested",
          "admission_note": "Conditional operational risk when a customer configures these controls; do not characterize it as an automatic breaking change for every existing integration.",
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          "consequence": "OpenAI documents configurable project-key expiration and maximum lifetimes on September 10, and new-key creation restrictions on September 15. Organization restrictions bound project settings. Existing keys are unaffected by creation controls; this is no guarantee against expiration or revocation.",
          "requiredAction": "Review automation that creates or rotates project API keys against organization and project lifetime limits and permitted key types. Before an actual key expiry, create an allowed replacement, update applications, verify it works, then revoke the old key. If creation is disabled or the needed key type is prohibited, resolve that policy dependency before attempting rotation.",
          "sources": [
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              "sourceId": "source:ksr-openai-project-key-governance-2026-09-10:3",
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              "capturedAt": "2026-10-06T04:43:20.597394+00:00",
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          ],
          "holds": {
            "retained_candidate": [
              "These are configurable controls, not a universal expiry deadline.",
              "September 10 expiry and September 15 creation notices must remain distinct.",
              "No settings, keys, credentials or account policies were inspected or changed."
            ],
            "reviewed_limitations": [
              "Keep September 10 expiry and September 15 creation-governance notices separate within this related review. Neither is a universal migration deadline.",
              "Expiry maximums constrain newly created keys; do not infer retroactive expiration dates or a default numerical lifetime.",
              "Existing keys are unaffected by creation controls only. That does not mean they cannot expire or be revoked.",
              "Project limits and creation settings cannot loosen the corresponding organization restrictions.",
              "Creation restrictions can obstruct a replacement-key workflow; that consequence is inferred from documented controls and was not tested.",
              "Do not transfer project-key expiry behavior to OAuth, Admin API keys or other credential surfaces.",
              "A shared OpenAI changelog URL is not evidence that the October 5 HIPAA collector observation duplicates either September notice."
            ],
            "review_limitations": [
              "No settings, key material, credentials, account policies, administrator entitlements, plan availability or private telemetry were accessed.",
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              "No universal outage, enforced organization policy, numeric lifetime, dedicated expiry error code or complete rollout is established.",
              "Public-only collision review; exact private draft/slug and publisher-ledger checks remain for a future authorized publisher."
            ],
            "publication": [
              "Private event/slug collisions, current relationship/media validity and actual publication admission require fresh publisher checks. Bound indexability approval is not supplied."
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        "legacy": {
          "stable_id": "ksr-openai-reusable-prompts-2026-11-30",
          "vendor": "OpenAI",
          "product": "OpenAI API",
          "model_version": "Reusable prompt objects; v1/prompts",
          "change_type": "retirement",
          "severity": "high",
          "affected_components": "Reusable prompt objects; v1/prompts; saved prompt IDs, versions and variables",
          "affected_audience": "Teams whose OpenAI API integrations depend on managed reusable prompt objects.",
          "region": "OpenAI dashboard and API prompt-object scope; account access and regional runtime untested.",
          "announcement_date": "2026-06-03",
          "announcement_date_basis": "official_notice_dated",
          "effective_date": "",
          "migration_deadline": "2026-11-30",
          "access_regional_impact": "No account entitlement, regional exception or exact cutoff timezone was established.",
          "migration_path": "Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.",
          "recommended_alternative": "Store prompt content and versioning in application code and generate Responses input/instructions directly.",
          "previous_status": "Reusable prompt objects are deprecated with a future scheduled shutdown; runtime not tested.",
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          "required_action": "Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.",
          "recommended_action": "Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.",
          "migration_impact": "Callers relying on managed prompt objects need a replacement for that dependency before the listed shutdown; request behavior has not been tested.",
          "source_summary": "OpenAI announced reusable-prompt deprecation on June 3, 2026. The documented November 30 shutdown covers reusable prompt objects and v1/prompts. Move managed prompt content into application-owned code before that date.",
          "first_detected_note": "Historical first-detection date is unverified. The June 3 notice and this source review do not establish when Kingy first detected the change.",
          "official_sources": [
            "https://developers.openai.com/api/docs/deprecations",
            "https://developers.openai.com/api/docs/guides/prompting/migrate-from-prompt-object",
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          "id": 932431,
          "event_id": "ksr-openai-reusable-prompts-2026-11-30",
          "title": "OpenAI reusable prompt objects and v1/prompts are scheduled to shut down November 30, 2026",
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            "status": "Reusable prompt objects and v1/prompts are scheduled to shut down November 30, 2026."
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            "note": "Historical first-detection date is unverified. The June 3 notice and this source review do not establish when Kingy first detected the change."
          },
          "kingy_verdict": "Treat saved OpenAI prompt objects as a migration dependency before November 30. Move their content and variables into application code, then validate the generated requests before changing production callers. A completed Assistants migration can still leave this separate dependency in place.",
          "time_points": [
            {
              "kind": "announced",
              "date": "2026-06-03",
              "status": "confirmed",
              "precision": "date"
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              "kind": "migration_deadline",
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              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/deprecations"
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              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/guides/prompting/migrate-from-prompt-object"
            },
            {
              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/guides/prompting"
            },
            {
              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/assistants/migration"
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              "publisher": "OpenAI",
              "url": "https://developers.openai.com/api/docs/changelog"
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          ],
          "published_at": "2026-10-06T16:53:56Z",
          "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>Treat saved OpenAI prompt objects as a migration dependency before November 30. Move their content and variables into application code, then validate the generated requests before changing production callers. A completed Assistants migration can still leave this separate dependency in place.</p></section><section class=\"action\"><h2>Required action</h2><p>Inventory saved prompt IDs, versions and variables. Move prompt content into versioned application helpers, generate Responses input/instructions directly, and validate behavior before switching production callers. Avoid a new long-lived prompt-object dependency.</p></section><section><h2>What is scheduled to change</h2><p>OpenAI announced the reusable-prompt deprecation on June 3, 2026. Its current schedule lists November 30, 2026 for shutdown of reusable prompt objects and v1/prompts. The notice covers the managed prompt feature used through the dashboard and API. It gives a date without an exact cutoff time or timezone.</p></section><section><h2>Move the prompt into your application</h2><p>Inventory the saved prompt IDs, versions and variables that callers depend on. OpenAI recommends storing prompt content in code, replacing variables with explicit function arguments, and passing generated content directly through Responses input and instructions. Version the helpers with the application and test representative requests before switching callers.</p></section><section><h2>Read the Assistants migration caveat</h2><p>The official Assistants migration page retains a create-prompt step, followed by a warning that reusable prompt objects are also deprecated. Use the current prompt-object migration guide when planning a lasting replacement. Evals has its own October 31 read-only milestone; that date does not belong to reusable prompts. Agent Builder also has a November 30 shutdown, for a separate product.</p></section><section><h2>Keep caching expectations testable</h2><p>The migration guide recommends placing static prompt content before dynamic content because cache hits depend on exact prefixes. Moving prompts into code alone establishes no cache hit, latency improvement or cost saving. Its code examples do not establish a required model upgrade or tested compatibility with your installed SDK.</p></section><section><h2>Evidence limits</h2><p>Historical first-detection date is unverified. The June 3 notice and this source review do not establish when Kingy first detected the change. No account, saved prompt, SDK request, migration, response quality, cache hit or cost was tested. This record describes a scheduled change; it does not confirm that a shutdown has occurred.</p></section><section><h2>Related Kingy coverage</h2><p>Our <a href=\"https://kingy.ai/ai-launch-tracker/openai-assistants-api-reaches-its-migration-deadline-august-26/\">Assistants migration article</a> already warns about this separate prompt-object deadline. This record covers the reusable-prompt dependency; the Assistants article keeps its own history and migration scope.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://developers.openai.com/api/docs/deprecations\">Reusable-prompt notice and shutdown schedule</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/prompting/migrate-from-prompt-object\">Migrate from prompt objects</a></li><li><a href=\"https://developers.openai.com/api/docs/guides/prompting\">Store prompts in application code</a></li><li><a href=\"https://developers.openai.com/api/docs/assistants/migration\">Assistants migration warning</a></li><li><a href=\"https://developers.openai.com/api/docs/changelog\">June 3 announcement</a></li></ul></section>",
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          "sources": [
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              "sourceId": "source:ksr-openai-reusable-prompts-2026-11-30:1",
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              "capturedAt": "2026-10-06T16:49:00.896867+00:00",
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          ],
          "holds": {
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              "Already mentioned in the Assistants article; a standalone event should cross-link it and avoid duplicate alerts.",
              "Not a duplicate of Agent Builder; the affected product/API differs.",
              "Historical first detection remains unverified; source retrieval and review time are not detection or notice dates.",
              "This is a scheduled prompt-object/API lifecycle event, not an assertion about a completed shutdown, all prompting, prompt caching, or the Responses API.",
              "The Evals October 31 read-only milestone must not be copied onto reusable prompts. Agent Builder shares a date but is a different product.",
              "The Assistants migration page has a legacy create-prompt step alongside an explicit deprecation warning; follow current code-managed prompt guidance.",
              "No account, saved prompt, SDK call, migration, response quality, latency, cache hit or cost was tested.",
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          "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>Haiku 5.5 needs a client migration for integrations that use manual thinking budgets, sampling controls or assistant prefill. Review request fields, response parsing and conversation storage together before changing the model ID. Forced tool choice remains supported, and no mandatory migration deadline is established.</p></section><section><h2>Required action</h2><p>Before switching a Messages API integration, audit thinking and sampling fields, block parsing, assistant prefill, tool routing and stored history. Recount prompts with the target model and revisit output limits and the applicable pricing tier. Validate the exact platform and client before production migration.</p></section><section><h2>Scope and notice</h2><p>Anthropic documented the change on October 7, 2026. This checklist covers Messages API code moving from Haiku 4.5 to claude-haiku-5-5. The migration guide says Claude Managed Agents users need only update the model name for this model migration. Platform model IDs differ; use the identifier documented for your provider.</p></section><section><h2>Thinking and response parsing</h2><p>Replace thinking: {&quot;type&quot;: &quot;enabled&quot;, &quot;budget_tokens&quot;: N} with adaptive thinking; manual budgets return HTTP 400. Adaptive thinking is on by default. Select response blocks by type rather than reading the first block as the answer, and pass thinking blocks back unmodified with tool results. Thinking counts toward max_tokens, so a small limit can end before any answer text. Thinking text is empty by default; use display: &quot;summarized&quot; if you need the documented summarized display. Thinking can be disabled at high effort or below; disabled thinking at xhigh or max returns HTTP 400.</p></section><section><h2>Sampling, prefill and forced tools</h2><p>Omit temperature, top_p and top_k. If temperature is sent, only 1 is accepted; if top_p is sent, only 0.99 is accepted. Sending both, any top_k, or other values returns HTTP 400. End messages with a user turn instead of an assistant prefill. Haiku 5.5 accepts forced tool_choice, including any or a named tool: the response starts with the tool call and has no thinking block. Use auto if the model should be able to think before calling a tool. Sonnet-specific forced-tool restrictions do not apply here.</p></section><section><h2>Computer use and stored conversations</h2><p>On the Claude API and Google Cloud, replace computer_20250124 with computer_toolset_20260801 and follow the guide’s agent-loop and header changes. Other platforms need their own compatibility checks. Replay thinking blocks through the producing account or a linked account; another account’s request can succeed after the block is dropped. Keep system, tools and earlier messages unchanged when replaying thinking blocks. For accounts created before August 31, 2026 at 00:00 UTC, the prefix-change error applies only to requests that set thinking.block_binding.prefix_mismatch_behavior.</p></section><section><h2>Token budgets and capacity</h2><p>Recount prompts with the target model: the same text uses more tokens, and old max_tokens limits and cost estimates need review. The first-party pricing table separates prompts up to 100,000 tokens from prompts over 100,000 tokens; no single flat rate is assumed here. Handle stop_reason: &quot;refusal&quot;; server-side fallback is unavailable. Haiku 4.5 Priority Tier commitments need separate capacity planning because Haiku 5.5 does not support Priority Tier.</p></section><section><h2>No scheduled retirement</h2><p>The model table’s “not sooner than October 7, 2027” commitment is a lower bound, not a scheduled shutdown. This migration record creates no calendar milestone or deadline.</p></section><section><h2>Evidence limits</h2><p>Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change. These are documented behaviors. Kingy has not run an inference, account, migration, entitlement, performance or billing test for this packet.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview.md\">release-notes/overview.md</a></li><li><a href=\"https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide\">models/haiku-5-5/migration-guide</a></li><li><a href=\"https://platform.claude.com/docs/en/models/haiku-5-5/whats-new-haiku-5-5\">models/haiku-5-5/whats-new-haiku-5-5</a></li><li><a href=\"https://platform.claude.com/docs/en/build-with-claude/thinking\">build-with-claude/thinking</a></li><li><a href=\"https://platform.claude.com/docs/en/about-claude/pricing.md\">about-claude/pricing.md</a></li><li><a href=\"https://platform.claude.com/docs/en/models/overview.md\">models/overview.md</a></li></ul></section>",
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          "reviewed_article_html": "<section><h2>Kingy verdict</h2><p>Managed Agents workflows using limited networking can lose web results or fail session validation when the environment and tool domain lists disagree. Review both lists before adding hosts, because each allowed host also becomes reachable from the sandbox. This change does not apply to unrestricted networking or self-hosted environments.</p></section><section><h2>Required action</h2><p>Review environment allowed_hosts alongside each enabled web tool’s allowed_domains. Remove inconsistent entries or allow only the hosts the workflow needs, accounting for the different matching rules and the sandbox access each added host permits. Check session validation and denied-fetch handling before relying on the workflow.</p></section><section><h2>Scope and notice</h2><p>The October 7, 2026 release note applies to Claude Managed Agents cloud environments configured with limited networking. web_search and web_fetch run on Anthropic’s servers, but the environment’s allowed_hosts now constrains them too. Unrestricted networking and self-hosted environments are outside this change. The per-tool domain lists remain additional restrictions.</p></section><section><h2>Runtime results and empty host lists</h2><p>A web_fetch request to an unmatched host returns a url_not_allowed tool error. web_search omits results from unmatched hosts. If allowed_hosts lists no hosts, neither tool returns a page or search result. allow_package_managers and allow_mcp_servers add no hosts for these server-side web tools.</p></section><section><h2>Session validation</h2><p>Creating a session fails with HTTP 400 when an enabled web tool’s allowed_domains contains an entry outside allowed_hosts. A session update that adds such an entry also fails. Remove the inconsistent domain entry or add the required host to allowed_hosts after reviewing the access that grants.</p></section><section><h2>The lists match differently</h2><p>A per-tool domain entry covers the named host and its subdomains. An environment allowed_hosts entry matches an exact host unless it starts with *. For example, the tool domain docs.example.com does not fit within environment [&quot;example.com&quot;], but it fits within [&quot;docs.example.com&quot;] or [&quot;*.example.com&quot;]. The environment wildcard covers subdomains, not the bare domain. Use wildcard syntax only where the environment field accepts it; the per-tool domain list does not accept wildcards.</p></section><section><h2>Review the sandbox impact</h2><p>Adding a host to allowed_hosts for web tools also opens that host to the sandbox. Keep the list limited to the hosts the workflow needs. Messages API organization-level web search and fetch settings in the Claude Console are separate and do not apply to Managed Agents sessions.</p></section><section><h2>Additional web-fetch condition</h2><p>Anthropic’s October 7 release note also documents a separate prior-context check for web_fetch. An allowed host alone does not guarantee a fetch: the URL must already appear through qualifying session context, such as user-message text or web results. A URL appearing only in model output, the system prompt, an attached document, or bash/read/MCP output does not qualify and can return url_not_in_prior_context. The release note directs callers to supply the URL in user.message text. Kingy has not runtime-tested this condition; the linked tools guide did not yet repeat it at the October 7 evening review. The exclusions for unrestricted networking and self-hosted environments above describe the environment-host restriction; this notice does not establish the same exceptions for the separate context check.</p></section><section><h2>Evidence limits</h2><p>Historical first detection is unverified. The retained October 7 source observation establishes this evidence capture, not the earliest time Kingy detected the change. The documentation establishes the notice date and described behavior, but no precise rollout timestamp or migration deadline is asserted. Kingy has not created a session, tested network access or inspected an account for this packet.</p></section><section><h2>Official sources</h2><ul><li><a href=\"https://platform.claude.com/docs/en/release-notes/overview.md\">release-notes/overview.md</a></li><li><a href=\"https://platform.claude.com/docs/en/managed-agents/tools-web-restrictions\">managed-agents/tools-web-restrictions</a></li><li><a href=\"https://platform.claude.com/docs/en/managed-agents/environments\">managed-agents/environments</a></li><li><a href=\"https://platform.claude.com/docs/en/managed-agents/tools\">managed-agents/tools (guide checked)</a></li></ul></section>",
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