AI Model Release Tracker

o1-pro

Released

o1-pro is an AI model released by OpenAI on Wednesday, Mar 19 2025, 20 days after GPT-4.5. It has a 200k token context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider..

API pricing

InputWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it.
$150.00
OutputWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one.
$600.00
  • Reasoning or thinking is supported.
USD per 1M tokensEvery price here is for one million tokens. A token is roughly three-quarters of a word, so a million tokens is about 750,000 words of text.Verified August 18, 2026Read from developers.openai.com. Click the check to open the source.

Available from

OpenAI$150.00$600.00200K
USD per 1M tokensEvery price here is for one million tokens. A token is roughly three-quarters of a word, so a million tokens is about 750,000 words of text.Checked October 18, 2026Third-party rates from openrouter.ai, not the lab’s own list price.

Compare o1-pro with

o1-pro

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Frequently asked questions

o1-pro was released by OpenAI on Wednesday, Mar 19 2025.

All OpenAI releases

47 tracked

2022

1 release
GPT-3.5
Nov 30 2022