OpenAI launches o3 and o4-mini, with thinking with images
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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
On the map — ⑥ Reasoning Models line
- Previous stopGPT-4.5
- This recordOpenAI launches o3 and o4-mini, with thinking with images
- Next stopAnthropic releases Claude Opus 4 and Claude Sonnet 4
In the model family tree — GPT family · 23 versions
- Earlier versiono3-mini
- This recordo3 / o4-mini
- Later versionThe latest version in this branch