Google
Breaking Api Change
High
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Gemini changes sampling and turn-validation rules for new models
Google deprecated temperature, top_p and top_k on its newest Gemini models and no longer supports prefilled model turns.
Who is affected? Gemini API developers using sampling controls or prefilled model turns with the newest Gemini models.
Action required Remove temperature, top_p and top_k; remove prefilled model turns; update migration tests for 400 responses.
By what date? No migration deadline announced
Affected stack Gemini 3.6 Flash, Gemini 3.5 Flash-Lite and future Gemini models
Access / region The documented behavior applies to these Gemini API models and future model releases; no regional exception is listed.
Recommended alternative Use explicit prompting and server-side previous_interaction_id
Anthropic
Breaking Api Change
High
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Anthropic deprecates non-default sampling controls on newer Claude models
Anthropic says non-default temperature, top_p and top_k values return a 400 error on Claude Opus 4.7 and later models.
Who is affected? Developers setting non-default sampling parameters on Claude Opus 4.7 or later models, including Claude Mythos Preview.
Action required Remove temperature, top_p and top_k overrides from affected requests and use prompting to guide behavior.
By what date? No migration deadline announced
Affected stack temperature, top_p and top_k on Claude Opus 4.7 and later
Access / region Anthropic documents this as model behavior on its API; partner-platform behavior should be checked separately.
Recommended alternative Omit the parameters and use prompting
Anthropic
Retirement
Critical
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Anthropic will retire Claude Opus 4.1 on August 5
Anthropic deprecated claude-opus-4-1-20250805 and set August 5, 2026 as its Claude API retirement date.
Who is affected? Claude API customers whose applications still call the dated Opus 4.1 model ID.
Action required Replace the model ID with claude-opus-4-8 and test prompts, tool calls, output quality and operating cost before retirement.
By what date? Aug 5, 2026
Affected stack claude-opus-4-1-20250805 on the Claude API
Access / region This date applies to Anthropic-operated platforms. Bedrock and Google Cloud schedules may differ.
Recommended alternative claude-opus-4-8
Google
Retirement
Critical
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Google will shut down three Imagen 4 API models August 17
Google is deprecating three stable Imagen 4 API model IDs and lists August 17, 2026 as their shutdown date.
Who is affected? Gemini API developers generating images with any of the three stable Imagen 4 model IDs.
Action required Switch to gemini-3.1-flash-image and test image quality, safety handling, aspect ratios and cost before shutdown.
By what date? Aug 17, 2026
Affected stack imagen-4.0-generate-001, imagen-4.0-ultra-generate-001, imagen-4.0-fast-generate-001
Access / region The change applies to the listed Gemini API model endpoints; no regional exception is documented.
Recommended alternative gemini-3.1-flash-image
OpenAI
Migration Deadline
Critical
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OpenAI Assistants API reaches its migration deadline August 26
OpenAI will remove the Assistants API on August 26, 2026, one year after notifying developers of its deprecation.
Who is affected? Developers running production assistants on the deprecated Assistants API.
Action required Complete migration to the Responses API and Conversations API, including tool and thread-state tests, before shutdown.
By what date? Aug 26, 2026
Affected stack Assistants API
Access / region The API shutdown is platform-wide; the official schedule does not list regional exceptions.
Recommended alternative Responses API and Conversations API
Google
Retirement
High
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Google lists October 16 as Gemini 2.5 Pro’s earliest possible shutdown date
Google lists October 16, 2026 as the Gemini 2.5 Pro shutdown date and recommends gemini-3.1-pro-preview.
Who is affected? Gemini API developers with applications pinned to the stable Gemini 2.5 Pro model.
Action required Move workloads to gemini-3.1-pro-preview and validate preview-model suitability, behavior and capacity before cutover.
By what date? Oct 16, 2026
Affected stack gemini-2.5-pro
Access / region The schedule is for the Gemini API. Google says exact shutdown timing will be communicated in advance.
Recommended alternative gemini-3.1-pro-preview
OpenAI
Retirement
High
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OpenAI Agent Builder is scheduled to shut down November 30
OpenAI deprecated Agent Builder on June 3 and scheduled the product to shut down on November 30, 2026. ChatKit remains available.
Who is affected? Developers and teams with workflows built in OpenAI Agent Builder.
Action required Inventory Agent Builder workflows and migrate them to the Agents SDK or ChatGPT Workspace Agents before shutdown.
By what date? Nov 30, 2026
Affected stack Agent Builder
Access / region OpenAI describes a product-wide shutdown; no regional exception is listed.
Recommended alternative Agents SDK or ChatGPT Workspace Agents
OpenAI
Retirement
High
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Older OpenAI GPT Image models will leave the API December 1
OpenAI deprecated gpt-image-1-mini, gpt-image-1.5 and chatgpt-image-latest and will remove them from the API on December 1, 2026.
Who is affected? API developers calling the listed GPT Image model IDs.
Action required Change image-generation integrations to gpt-image-2 and regression-test output, latency and cost before the deadline.
By what date? Dec 1, 2026
Affected stack gpt-image-1-mini, gpt-image-1.5, chatgpt-image-latest
Access / region The removal applies to the OpenAI API; the official notice lists no regional exception.
Recommended alternative gpt-image-2
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Kingy monitors official vendor documentation, normalizes each material change, and holds incomplete or uncertain imports for editorial review. “Last verified” is the latest date a Kingy editor checked the source—not a claim that the vendor will never revise it.