
Everything we know: OpenAI's o3 model
Has OpenAI o3 been released? As of January 31, 2025, OpenAI o3-mini has been officially released, marking a major step forward in cost-effective reasoning. o3-mini is now available in ChatGPT and the API for select developers in API usage tiers 3-5, and for ChatGPT Plus, Team, and Pro users starting