OpenAI o3 announced on: 2024-12-20 by OpenAI — frontier reasoning model successor to o1, breakthrough on ARC-AGI eval (87.5%).
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2024-12-20 by OpenAI — frontier reasoning model successor to o1, breakthrough on ARC-AGI eval (87.5%)
Primary source · official blog · 2024-12-20
OpenAI o3 and o3-mini — early access announcement — OpenAI