tech
December 8, 2025
Introducing OpenAI o3 and o4-mini
Update on June 10, 2025: OpenAI o3‑pro is now available to Pro users in ChatGPT, as well as in our API. Like OpenAI o1‑pro, o3‑pro is a version of our most intelligent model, OpenAI o3, designed to think longer and provide the most reliable responses. Full details can be found in our release notes(opens in a new window).
TL;DR
- OpenAI o3‑pro is now available to Pro users in ChatGPT.
- o3‑pro is also accessible through OpenAI's API.
- It is a version of the OpenAI o3 model.
- The model is designed for longer thinking and reliable responses.
- Release notes contain full details.
Continue reading
the original article