OpenAI launches o3 and o4-mini, with thinking with images
Launched o3 / o4-mini, with thinking with images
Why it matters
Reasoning models shifted from chains of thought to agents; the axis of competition moved from how long a model thinks to how long it can work autonomously
Source — Primary sources first; secondary reports are labelled “Press”
Officialopenai.comhttps://openai.com/index/introducing-o3-and-o4-mini/Added in Week 35, 2026 · See that week