{
    "name": "Kingy AI Price Index",
    "licence": "CC BY 4.0",
    "citation": "Kingy AI Price Index, April 2026 edition. Kingy AI. https://kingy.ai/ai-price-index/2026-04/",
    "url": "https://kingy.ai/ai-price-index/2026-04/",
    "method": {
        "version": "1.0",
        "url": "https://kingy.ai/ai-price-index/#method"
    },
    "edition": {
        "edition": "2026-04",
        "label": "April 2026",
        "reconstructed": true,
        "referenceDate": "2026-04-01",
        "capturedAt": "2026-04-01T00:00:00+00:00",
        "method": "1.0",
        "previous": "2026-03",
        "previousReferenceDate": "2026-03-01",
        "intervalDays": 31,
        "headline": "In April 2026, a million AI tokens cost a median $3.75 from frontier models (down 19.5%), $1.41 from mid-range models (up 46.1%) and $0.46 from small models (up 105.6%). Changes compare with March.",
        "story": {
            "title": "Small-model prices rose 105.6% in April",
            "text": "The median small model cost $0.46 per million tokens, up from $0.23 in March. Google and Mistral AI launched pricier small models and OpenAI is now counted.",
            "tier": "small"
        },
        "changes": {
            "likeForLike": [],
            "unchanged": 9,
            "basket": [
                {
                    "provider": "Google",
                    "tier": "small",
                    "from": {
                        "model": "Gemini 2.5 Flash-Lite",
                        "value": "0.1750"
                    },
                    "to": {
                        "model": "Gemini 3.1 Flash-Lite Preview",
                        "value": "0.5625"
                    }
                },
                {
                    "provider": "Mistral AI",
                    "tier": "small",
                    "from": {
                        "model": "Mistral Small 3.2",
                        "value": "0.1500"
                    },
                    "to": {
                        "model": "Mistral Small 4",
                        "value": "0.2625"
                    }
                },
                {
                    "provider": "OpenAI",
                    "tier": "frontier",
                    "from": {
                        "model": "GPT-5.2",
                        "value": "4.8125"
                    },
                    "to": {
                        "model": "GPT-5.4",
                        "value": "5.6250"
                    }
                },
                {
                    "provider": "OpenAI",
                    "tier": "mid",
                    "from": {
                        "model": "GPT-5 mini",
                        "value": "0.6875"
                    },
                    "to": {
                        "model": "GPT-5.4 mini",
                        "value": "1.6875"
                    }
                },
                {
                    "provider": "OpenAI",
                    "tier": "small",
                    "from": null,
                    "to": {
                        "model": "GPT-5.4 nano",
                        "value": "0.4625"
                    }
                },
                {
                    "provider": "xAI",
                    "tier": "frontier",
                    "from": {
                        "model": "Grok 4",
                        "value": "6.0000"
                    },
                    "to": {
                        "model": "Grok 4.20",
                        "value": "3.0000"
                    }
                }
            ]
        },
        "scheduled": [],
        "outlook": [],
        "withheld": [],
        "corrections": [],
        "tiers": [
            {
                "id": "frontier",
                "label": "Frontier",
                "kind": "api",
                "summary": "Each lab's most capable model",
                "unit": "USD per 1M tokens, 3:1 input:output blend",
                "value": "3.7500",
                "previousValue": "4.6563",
                "changePct": -19.5,
                "n": 6,
                "min": "0.3150",
                "max": "10.0000",
                "constituents": [
                    "deepseek-v3-2",
                    "mistral-large-3",
                    "xai-grok-4-20",
                    "google-gemini-3-1-pro-preview",
                    "openai-gpt-5-4",
                    "anthropic-claude-opus-4-6"
                ],
                "published": true,
                "indexLevel": "83.33"
            },
            {
                "id": "mid",
                "label": "Mid-range",
                "kind": "api",
                "summary": "Each lab's balanced workhorse model",
                "unit": "USD per 1M tokens, 3:1 input:output blend",
                "value": "1.4063",
                "previousValue": "0.9625",
                "changePct": 46.1,
                "n": 4,
                "min": "0.8000",
                "max": "6.0000",
                "constituents": [
                    "mistral-medium-3",
                    "google-gemini-3-flash-preview",
                    "openai-gpt-5-4-mini",
                    "anthropic-claude-sonnet-4-6"
                ],
                "published": true,
                "indexLevel": "35.16"
            },
            {
                "id": "small",
                "label": "Small",
                "kind": "api",
                "summary": "Each lab's low-cost, high-volume model",
                "unit": "USD per 1M tokens, 3:1 input:output blend",
                "value": "0.4625",
                "previousValue": "0.2250",
                "changePct": 105.6,
                "n": 5,
                "min": "0.2625",
                "max": "2.0000",
                "constituents": [
                    "mistral-small-4",
                    "xai-grok-4-1-fast",
                    "openai-gpt-5-4-nano",
                    "google-gemini-3-1-flash-lite",
                    "anthropic-claude-haiku-4-5"
                ],
                "published": true,
                "indexLevel": "88.10"
            },
            {
                "id": "standard",
                "label": "Standard plan",
                "kind": "subscription",
                "summary": "Each provider's main paid individual plan",
                "unit": "USD per month",
                "value": null,
                "previousValue": null,
                "changePct": null,
                "n": 0,
                "min": null,
                "max": null,
                "constituents": [],
                "published": false,
                "indexLevel": null
            },
            {
                "id": "top",
                "label": "Top plan",
                "kind": "subscription",
                "summary": "Each provider's highest-priced individual plan",
                "unit": "USD per month",
                "value": null,
                "previousValue": null,
                "changePct": null,
                "n": 0,
                "min": null,
                "max": null,
                "constituents": [],
                "published": false,
                "indexLevel": null
            }
        ],
        "observations": [
            {
                "id": "openai-gpt-5-4",
                "provider": "OpenAI",
                "model": "GPT-5.4",
                "modelId": "gpt-5.4",
                "tier": "frontier",
                "status": "verified",
                "input": "2.50",
                "output": "15.00",
                "blended": "5.6250",
                "source": {
                    "url": "https://openai.com/api/pricing",
                    "page": "https://openai.com/api/pricing",
                    "fetchedAt": "2026-10-19T21:54:09+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260326061832/https://openai.com/api/pricing/",
                    "snapshotAt": "2026-03-26T06:18:32+00:00",
                    "sha256": "6f54d98f25a1e0977e0571c0cdc3bf3d6cd9c3f886406b80e57b80a17304d0ab",
                    "excerpt": "GPT-5.4 Our most capable model for professional work. Price Input: $2.50 / 1M tokens Cached input: $0.25 / 1M tokens Output: $15.00"
                },
                "positioning": {
                    "url": "https://openai.com/api/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260326061832/https://openai.com/api/pricing/",
                    "quote": "GPT-5.4 Our most capable model for professional work.",
                    "rule": null
                }
            },
            {
                "id": "openai-gpt-5-4-mini",
                "provider": "OpenAI",
                "model": "GPT-5.4 mini",
                "modelId": "gpt-5.4-mini",
                "tier": "mid",
                "status": "verified",
                "input": "0.750",
                "output": "4.500",
                "blended": "1.6875",
                "source": {
                    "url": "https://openai.com/api/pricing",
                    "page": "https://openai.com/api/pricing",
                    "fetchedAt": "2026-10-19T21:54:09+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260326061832/https://openai.com/api/pricing/",
                    "snapshotAt": "2026-03-26T06:18:32+00:00",
                    "sha256": "6f54d98f25a1e0977e0571c0cdc3bf3d6cd9c3f886406b80e57b80a17304d0ab",
                    "excerpt": "GPT-5.4 mini Our strongest mini model yet for coding, computer use, and subagents. Price Input: $0.750 / 1M tokens Cached input: $0.075 / 1M tokens Output: $4.500"
                },
                "positioning": {
                    "url": "https://openai.com/api/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260326061832/https://openai.com/api/pricing/",
                    "quote": "GPT-5.4 mini Our strongest mini model yet for coding, computer use, and subagents.",
                    "rule": null
                }
            },
            {
                "id": "openai-gpt-5-4-nano",
                "provider": "OpenAI",
                "model": "GPT-5.4 nano",
                "modelId": "gpt-5.4-nano",
                "tier": "small",
                "status": "verified",
                "input": "0.20",
                "output": "1.25",
                "blended": "0.4625",
                "source": {
                    "url": "https://openai.com/api/pricing",
                    "page": "https://openai.com/api/pricing",
                    "fetchedAt": "2026-10-19T21:54:09+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260326061832/https://openai.com/api/pricing/",
                    "snapshotAt": "2026-03-26T06:18:32+00:00",
                    "sha256": "6f54d98f25a1e0977e0571c0cdc3bf3d6cd9c3f886406b80e57b80a17304d0ab",
                    "excerpt": "GPT-5.4 nano Our cheapest GPT-5.4-class model for simple high-volume tasks. Price Input: $0.20 / 1M tokens Cached input: $0.02 / 1M tokens Output: $1.25"
                },
                "positioning": {
                    "url": "https://openai.com/api/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260326061832/https://openai.com/api/pricing/",
                    "quote": "GPT-5.4 nano Our cheapest GPT-5.4-class model for simple high-volume tasks.",
                    "rule": null
                }
            },
            {
                "id": "anthropic-claude-opus-4-6",
                "provider": "Anthropic",
                "model": "Claude Opus 4.6",
                "modelId": "claude-opus-4-6",
                "tier": "frontier",
                "status": "verified",
                "input": "5",
                "output": "25",
                "cachedInput": "0.50",
                "blended": "10.0000",
                "source": {
                    "url": "https://platform.claude.com/docs/en/about-claude/pricing",
                    "page": "https://platform.claude.com/docs/en/about-claude/pricing",
                    "fetchedAt": "2026-10-19T22:09:26+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260330053249/https://platform.claude.com/docs/en/about-claude/pricing",
                    "snapshotAt": "2026-03-30T05:32:49+00:00",
                    "sha256": "0f2479cce3f866dab6bb3fc68737f57f2390936fbf5105b3bf352fb17557b0d5",
                    "excerpt": "Claude Opus 4.6 $5 / MTok $6.25 / MTok $10 / MTok $0.50 / MTok $25 / MTok"
                },
                "positioning": {
                    "url": "https://platform.claude.com/docs/en/about-claude/models/overview",
                    "snapshotUrl": "https://web.archive.org/web/20260329104942/https://platform.claude.com/docs/en/about-claude/models/overview",
                    "quote": "Feature Claude Opus 4.6 Claude Sonnet 4.6 Claude Haiku 4.5 Description The most intelligent model for building agents and coding",
                    "rule": null
                }
            },
            {
                "id": "anthropic-claude-sonnet-4-6",
                "provider": "Anthropic",
                "model": "Claude Sonnet 4.6",
                "modelId": "claude-sonnet-4-6",
                "tier": "mid",
                "status": "verified",
                "input": "3",
                "output": "15",
                "cachedInput": "0.30",
                "blended": "6.0000",
                "source": {
                    "url": "https://platform.claude.com/docs/en/about-claude/pricing",
                    "page": "https://platform.claude.com/docs/en/about-claude/pricing",
                    "fetchedAt": "2026-10-19T22:09:26+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260330053249/https://platform.claude.com/docs/en/about-claude/pricing",
                    "snapshotAt": "2026-03-30T05:32:49+00:00",
                    "sha256": "0f2479cce3f866dab6bb3fc68737f57f2390936fbf5105b3bf352fb17557b0d5",
                    "excerpt": "Claude Sonnet 4.6 $3 / MTok $3.75 / MTok $6 / MTok $0.30 / MTok $15 / MTok"
                },
                "positioning": {
                    "url": "https://platform.claude.com/docs/en/about-claude/models/overview",
                    "snapshotUrl": "https://web.archive.org/web/20260329104942/https://platform.claude.com/docs/en/about-claude/models/overview",
                    "quote": "Feature Claude Opus 4.6 Claude Sonnet 4.6 Claude Haiku 4.5 Description The most intelligent model for building agents and coding The best combination of speed and intelligence",
                    "rule": null
                }
            },
            {
                "id": "anthropic-claude-haiku-4-5",
                "provider": "Anthropic",
                "model": "Claude Haiku 4.5",
                "modelId": "claude-haiku-4-5",
                "tier": "small",
                "status": "verified",
                "input": "1",
                "output": "5",
                "cachedInput": "0.10",
                "blended": "2.0000",
                "source": {
                    "url": "https://platform.claude.com/docs/en/about-claude/pricing",
                    "page": "https://platform.claude.com/docs/en/about-claude/pricing",
                    "fetchedAt": "2026-10-19T22:09:26+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260330053249/https://platform.claude.com/docs/en/about-claude/pricing",
                    "snapshotAt": "2026-03-30T05:32:49+00:00",
                    "sha256": "0f2479cce3f866dab6bb3fc68737f57f2390936fbf5105b3bf352fb17557b0d5",
                    "excerpt": "Claude Haiku 4.5 $1 / MTok $1.25 / MTok $2 / MTok $0.10 / MTok $5 / MTok"
                },
                "positioning": {
                    "url": "https://platform.claude.com/docs/en/about-claude/models/overview",
                    "snapshotUrl": "https://web.archive.org/web/20260329104942/https://platform.claude.com/docs/en/about-claude/models/overview",
                    "quote": "Feature Claude Opus 4.6 Claude Sonnet 4.6 Claude Haiku 4.5 Description The most intelligent model for building agents and coding The best combination of speed and intelligence The fastest model with near-frontier intelligence",
                    "rule": null
                }
            },
            {
                "id": "deepseek-v3-2",
                "provider": "DeepSeek",
                "model": "DeepSeek V3.2",
                "modelId": "deepseek-v3.2",
                "tier": "frontier",
                "status": "verified",
                "input": "0.28",
                "output": "0.42",
                "cachedInput": "0.028",
                "blended": "0.3150",
                "source": {
                    "url": "https://api-docs.deepseek.com/quick_start/pricing",
                    "page": "https://api-docs.deepseek.com/quick_start/pricing",
                    "fetchedAt": "2026-10-19T22:14:50+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260329125140/https://api-docs.deepseek.com/quick_start/pricing",
                    "snapshotAt": "2026-03-29T12:51:40+00:00",
                    "sha256": "d981c0f3ad346dd1e761207afc9fc773f5fc7f179299df5021bc8ee2e001d4db",
                    "excerpt": "deepseek-chat deepseek-reasoner BASE URL https://api.deepseek.com MODEL VERSION DeepSeek-V3.2 (Non-thinking Mode) DeepSeek-V3.2 (Thinking Mode) CONTEXT LENGTH 128K MAX OUTPUT DEFAULT: 4K MAXIMUM: 8K DEFAULT: 32K MAXIMUM: 64K FEATURES Json Output ✓ ✓ Tool Calls ✓ ✓ Chat Prefix Completion（Beta） ✓ ✓ FIM Completion（Beta） ✓ ✗ PRICING 1M INPUT TOKENS (CACHE HIT) $0.028 1M INPUT TOKENS (CACHE MISS) $0.28 1M OUTPUT TOKENS $0.42"
                },
                "positioning": {
                    "url": "https://api-docs.deepseek.com/quick_start/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260329125140/https://api-docs.deepseek.com/quick_start/pricing",
                    "quote": "MODEL VERSION DeepSeek-V3.2 (Non-thinking Mode) DeepSeek-V3.2 (Thinking Mode)",
                    "rule": "From September 5, 2025 deepseek-chat and deepseek-reasoner are the non-thinking and thinking modes of one model at one price; one model holds one tier, the frontier slot."
                }
            },
            {
                "id": "google-gemini-3-1-pro-preview",
                "provider": "Google",
                "model": "Gemini 3.1 Pro Preview",
                "modelId": "gemini-3.1-pro-preview",
                "tier": "frontier",
                "status": "verified",
                "input": "2.00",
                "output": "12.00",
                "blended": "4.5000",
                "conditions": "Prompts up to the shortest context band (128K or 200K tokens).",
                "source": {
                    "url": "https://ai.google.dev/gemini-api/docs/pricing",
                    "page": "https://ai.google.dev/gemini-api/docs/pricing",
                    "fetchedAt": "2026-10-19T22:15:44+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260329190628/https://ai.google.dev/gemini-api/docs/pricing",
                    "snapshotAt": "2026-03-29T19:06:28+00:00",
                    "sha256": "2c7d0ac4ab9752a2f5528f533bec35308b975961a0276076015d462688a14617",
                    "excerpt": "Gemini 3.1 Pro Preview gemini-3.1-pro-preview and gemini-3.1-pro-preview-customtools Try it in Google AI Studio The latest performance, intelligence, and usability improvements to the best model family in the world for multimodal understanding, agentic capabilities, and vibe-coding. Standard Free Tier Paid Tier, per 1M tokens in USD Input price Not available $2.00, prompts <= 200k tokens $4.00, prompts > 200k tokens Output price (including thinking tokens) Not available $12.00"
                },
                "positioning": {
                    "url": "https://ai.google.dev/gemini-api/docs/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260329190628/https://ai.google.dev/gemini-api/docs/pricing",
                    "quote": "Gemini 3.1 Pro Preview gemini-3.1-pro-preview and gemini-3.1-pro-preview-customtools Try it in Google AI Studio The latest performance, intelligence, and usability improvements to the best model family in the world",
                    "rule": "Google made no flagship claim for one model on this date, so the newest model in its highest-priced line (Pro) takes the frontier slot. Paid previews count."
                }
            },
            {
                "id": "google-gemini-3-flash-preview",
                "provider": "Google",
                "model": "Gemini 3 Flash Preview",
                "modelId": "gemini-3-flash-preview",
                "tier": "mid",
                "status": "verified",
                "input": "0.50",
                "output": "3.00",
                "blended": "1.1250",
                "conditions": "Prompts up to the shortest context band (128K or 200K tokens).",
                "source": {
                    "url": "https://ai.google.dev/gemini-api/docs/pricing",
                    "page": "https://ai.google.dev/gemini-api/docs/pricing",
                    "fetchedAt": "2026-10-19T22:15:44+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260329190628/https://ai.google.dev/gemini-api/docs/pricing",
                    "snapshotAt": "2026-03-29T19:06:28+00:00",
                    "sha256": "2c7d0ac4ab9752a2f5528f533bec35308b975961a0276076015d462688a14617",
                    "excerpt": "Gemini 3 Flash Preview gemini-3-flash-preview Try it in Google AI Studio Our most intelligent model built for speed, combining frontier intelligence with superior search and grounding. Standard Free Tier Paid Tier, per 1M tokens in USD Input price Free of charge $0.50 (text / image / video) $1.00 (audio) Output price (including thinking tokens) Free of charge $3.00"
                },
                "positioning": {
                    "url": "https://ai.google.dev/gemini-api/docs/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260329190628/https://ai.google.dev/gemini-api/docs/pricing",
                    "quote": "Gemini 3 Flash Preview gemini-3-flash-preview Try it in Google AI Studio Our most intelligent model built for speed, combining frontier intelligence with superior search and grounding",
                    "rule": "Flash is Google's line between Pro and Flash-Lite; its newest generally available or paid-preview model takes the mid-range slot."
                }
            },
            {
                "id": "google-gemini-3-1-flash-lite",
                "provider": "Google",
                "model": "Gemini 3.1 Flash-Lite Preview",
                "modelId": "gemini-3.1-flash-lite",
                "tier": "small",
                "status": "verified",
                "input": "0.25",
                "output": "1.50",
                "blended": "0.5625",
                "conditions": "Prompts up to the shortest context band (128K or 200K tokens).",
                "source": {
                    "url": "https://ai.google.dev/gemini-api/docs/pricing",
                    "page": "https://ai.google.dev/gemini-api/docs/pricing",
                    "fetchedAt": "2026-10-19T22:15:44+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260329190628/https://ai.google.dev/gemini-api/docs/pricing",
                    "snapshotAt": "2026-03-29T19:06:28+00:00",
                    "sha256": "2c7d0ac4ab9752a2f5528f533bec35308b975961a0276076015d462688a14617",
                    "excerpt": "Gemini 3.1 Flash-Lite Preview gemini-3.1-flash-lite-preview Try it in Google AI Studio Our most cost-efficient model, optimized for high-volume agentic tasks, translation, and simple data processing. Preview models may change before becoming stable and have more restrictive rate limits. Standard Free Tier Paid Tier, per 1M tokens in USD Input price Free of charge $0.25 (text / image / video) $0.50 (audio) Output price (including thinking tokens) Free of charge $1.50"
                },
                "positioning": {
                    "url": "https://ai.google.dev/gemini-api/docs/pricing",
                    "snapshotUrl": "https://web.archive.org/web/20260329190628/https://ai.google.dev/gemini-api/docs/pricing",
                    "quote": "Gemini 3.1 Flash-Lite Preview gemini-3.1-flash-lite-preview Try it in Google AI Studio Our most cost-efficient model, optimized for high-volume agentic tasks",
                    "rule": null
                }
            },
            {
                "id": "mistral-large-3",
                "provider": "Mistral AI",
                "model": "Mistral Large 3",
                "modelId": "mistral-large-2512",
                "tier": "frontier",
                "status": "verified",
                "input": "0.5",
                "output": "1.5",
                "blended": "0.7500",
                "source": {
                    "url": "https://mistral.ai/pricing",
                    "page": "https://mistral.ai/pricing",
                    "fetchedAt": "2026-10-19T22:05:46+00:00",
                    "snapshotUrl": "https://web.archive.org/web/20260330125802/https://mistral.ai/pricing",
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