What is o3-mini?
o3-mini is OpenAI’s latest small reasoning model, optimized for coding, math, and science tasks.
How is o3-mini different from o1 and o1-mini?
o3-mini delivers faster responses than o1-mini and can match or exceed o1’s accuracy with higher reasoning settings.
Which ChatGPT plans have access to o3-mini?
Enterprise Plan: Coming soon.
Plus, Team, and Pro: All these plans can select o3-mini directly in the model picker.
Free Plan: For the first time, a reasoning model is available on the Free plan. Simply select the “Reason” option in the composer or regenerate a response to try o3-mini.
Does o3-mini replace o1-mini?
Yes. Going forward, o3-mini is the recommended small reasoning model in the o-series, offering improved performance, faster responses, and a range of reasoning modes.
Can I use o3-mini through the API?
Yes. It’s available via Chat Completions, Assistants, and Batch APIs. Developers can integrate o3-mini into their applications for coding and scientific tasks. See more in our developer docs.
Does o3-mini support vision or image inputs?
No. Like o1-mini, o3-mini does not handle vision-based tasks. If you need visual reasoning, we recommend using o1.
How does o3-mini ensure safe and reliable outputs?
We use a “deliberative alignment” approach similar to our other o-series models. This includes training the model to reason about safety rules before responding, plus extensive red-teaming and external evaluations to reduce harmful or disallowed outputs.