About Per Million
LLM API prices per 1M tokens for OpenAI, Anthropic, Gemini, Mistral, xAI and more, with a daily log of price changes and a cost calculator.
Who it is for
developers, startup founders and product managers who pay for LLM APIs and want to pick a model and keep the monthly bill predictable.
Guides are researched from official documentation, changelogs and other public sources. Each guide lists its sources and the date it was checked, so you can verify the details yourself.
Editorial policy
- We research official docs, pricing pages, terms and changelogs, and cite them inline
- We never invent experiences, tests or results; when something is unknown we say so
- Recommendations include who it is not for, limitations and cost; affiliate links are disclosed at the top
- Guides are reviewed and updated regularly (the update date is shown)
Browse by topic
- Claude (4)
- OpenAI (4)
- Prompt Caching (4)
- API Pricing (3)
- Gemini (3)
- Batch API (2)
- Free Tier (2)
- LLM Pricing (2)
Who runs this site
Per Million is published by aobaworks (aobaworks.com), which runs a small group of independent guide and data sites. Data pages are rebuilt from their public sources once a day. Guides are re-checked against their sources on a regular schedule.
Contact
Corrections and questions: shigoto.ai.note@gmail.com