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RoninForge AI Price Index

Covering March 2023 to July 2026

Every price is transcribed from a dated first-party source. Open data under CC BY 4.0, validated as of 2026-07-27.

Cheapest input tokens are about 857x cheaper than in 2023roninforge.org/ai-price-indexUSD per 1M tokens (log)$0.10$1.00$10.00$100.00202420252026cheapestOpenAIAnthropicGooglemeta-llamaxAI
ModelProviderDatePriceConfidenceSource
gpt-4OpenAI2023-03-14$30.00archivedsource
gpt-4-turboOpenAI2023-11-06$10.00archivedsource
3-haikuAnthropic2024-03-04$0.25archivedsource
3-opusAnthropic2024-03-04$15.00archivedsource
3-sonnetAnthropic2024-03-04$3.00archivedsource
gpt-4oOpenAI2024-05-13$5.00archivedsource
3-5-sonnetAnthropic2024-06-20$3.00archivedsource
gpt-4o-miniOpenAI2024-07-18$0.15archivedsource
gpt-4oOpenAI2024-08-06$2.50archivedsource
gemini-1.5-flashGoogle2024-08-12$0.08archivedsource
o1-miniOpenAI2024-09-12$1.10verifiedsource
gemini-1.5-proGoogle2024-10-01$1.25archivedsource
3-5-haikuAnthropic2024-11-04$1.00archivedsource
3-5-haikuAnthropic2024-12-03$0.80archivedsource
o1OpenAI2024-12-17$15.00verifiedsource
o3-miniOpenAI2025-01-31$1.10verifiedsource
gemini-2.0-flashGoogle2025-02-05$0.10archivedsource
3-7-sonnetAnthropic2025-02-24$3.00archivedsource
o1-proOpenAI2025-03-19$150.00verifiedsource
llama-4-maverickmeta-llama2025-04-05$0.27inferredsource
llama-4-scoutmeta-llama2025-04-05$0.18inferredsource
gpt-4.1OpenAI2025-04-14$2.00verifiedsource
o3OpenAI2025-04-16$10.00archivedsource
o4-miniOpenAI2025-04-16$1.10verifiedsource
opus-4Anthropic2025-05-14$15.00verifiedsource
sonnet-4Anthropic2025-05-14$3.00verifiedsource
o3OpenAI2025-06-10$2.00verifiedsource
o3-proOpenAI2025-06-10$20.00verifiedsource
gemini-2.5-flashGoogle2025-06-17$0.30archivedsource
gemini-2.5-flash-liteGoogle2025-06-17$0.10archivedsource
gemini-2.5-proGoogle2025-06-17$1.25archivedsource
o3-deep-researchOpenAI2025-06-26$10.00verifiedsource
o4-mini-deep-researchOpenAI2025-06-26$2.00verifiedsource
opus-4-1Anthropic2025-08-05$15.00verifiedsource
gpt-5OpenAI2025-08-07$1.25inferredsource
sonnet-4-5Anthropic2025-09-29$3.00verifiedsource
haiku-4-5Anthropic2025-10-15$1.00verifiedsource
opus-4-5Anthropic2025-11-01$5.00verifiedsource
gpt-5.1OpenAI2025-11-13$1.25inferredsource
gemini-3-flash-previewGoogle2025-12-17$0.50verifiedsource
gpt-5.2OpenAI2026-01-15$1.75inferredsource
gpt-5.2-proOpenAI2026-01-15$21.00inferredsource
opus-4-6Anthropic2026-02-05$5.00verifiedsource
sonnet-4-6Anthropic2026-02-17$3.00verifiedsource
gemini-3.1-pro-previewGoogle2026-02-19$2.00verifiedsource
gpt-5.4OpenAI2026-03-05$2.50verifiedsource
gpt-5.4-proOpenAI2026-03-05$30.00verifiedsource
grok-4.20-0309-reasoningxAI2026-03-09$1.25verifiedsource
gpt-5.4-miniOpenAI2026-03-17$0.75verifiedsource
gpt-5.4-nanoOpenAI2026-03-17$0.20verifiedsource
grok-4.20-multi-agent-0309xAI2026-03-31$1.25verifiedsource
opus-4-7Anthropic2026-04-16$5.00verifiedsource
gpt-5.5OpenAI2026-04-24$5.00verifiedsource
gpt-5.5-proOpenAI2026-04-24$30.00verifiedsource
grok-4.3xAI2026-05-05$1.25verifiedsource
gemini-3.1-flash-liteGoogle2026-05-07$0.25verifiedsource
gemini-3.5-flashGoogle2026-05-19$1.50verifiedsource
opus-4-8Anthropic2026-05-28$5.00verifiedsource
grok-build-0.1xAI2026-06-01$1.00inferredsource
fable-5Anthropic2026-06-09$10.00verifiedsource
gpt-5OpenAI2026-06-22$1.25verifiedsource
gpt-5.1OpenAI2026-06-22$1.25verifiedsource
gpt-5.2OpenAI2026-06-22$1.75verifiedsource
gpt-5.2-proOpenAI2026-06-22$21.00verifiedsource
grok-4.20-0309-non-reasoningxAI2026-06-22$1.25inferredsource
grok-build-0.1xAI2026-06-22$1.00verifiedsource
llama-3.1-405bmeta-llama2026-06-22$3.50inferredsource
llama-3.1-8bmeta-llama2026-06-22$0.18inferredsource
llama-3.3-70bmeta-llama2026-06-22$1.04inferredsource
mythos-5Anthropic2026-06-22$10.00inferredsource
grok-4.20-0309-non-reasoningxAI2026-06-29$1.25verifiedsource
mythos-5Anthropic2026-06-29$10.00verifiedsource
sonnet-5Anthropic2026-07-01$2.00verifiedsource
grok-4.5xAI2026-07-08$2.00verifiedsource
gpt-5.3-codexOpenAI2026-07-10$1.75verifiedsource
gemini-3.5-flash-liteGoogle2026-07-21$0.30verifiedsource
gemini-3.6-flashGoogle2026-07-21$1.50verifiedsource
opus-5Anthropic2026-07-24$5.00verifiedsource

One dot per recorded price. Hover or focus a dot for the exact price, date, confidence, and its first-party source. Log scale.

Variation
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Models

Models from the major providers (OpenAI, Anthropic, Google, xAI, Meta) are shown by default. Toggle any model below, or use Flagships / All / Clear.

AI model API prices over time

Chart how AI model API token prices changed over time. Filter by model and variation and read the price on any date. Open data, CC BY 4.0.

Open data

This chart reads the open AI Price Index dataset (CC BY 4.0). The machine-readable JSON, the methodology, and a cite line are at the open-data endpoint.

AI Price Index by RoninForge (https://roninforge.org/data/ai-price-index/), CC BY 4.0. Prices validated as of 2026-07-27.

Frequently asked questions

Where does the data come from?

Every price is transcribed from the provider official pricing page, with the source link and the date it was last validated. The full dataset is open under CC BY 4.0.

Is the price history complete?

It is growing flagship first. Each price carries a confidence label, and reconstructed history is never shown with the same weight as a live-confirmed price.

Does anything I do here leave my browser?

No. The chart reads a static dataset shipped with the page and renders entirely in your browser. There is no upload and nothing you do is tracked.

Can I use the data in my own work?

Yes, under CC BY 4.0 with attribution. The machine-readable JSON and a cite line are at the open-data endpoint.

Sources

Prices last verified 2026-07-27, from each provider's official page.

Independent project, not affiliated with any model provider. Prices can change; every value links its first-party source and validation date.

Goei

You just worked this out by hand. Goei keeps it current automatically from provider billing data, so next month the number finds you instead of waiting for you to retype it. See the dashboard

Want your whole stack in one number, subscriptions included? Total it with the How much are you spending on AI tools?.

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