OpenAI o3-mini
A cost-efficient hosted reasoning model optimized for STEM and coding, with selectable reasoning effort, function calling, structured outputs, streaming and search integration.
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Why this model scores 72.9
Medium effort matches o1 on important reasoning evaluations and high effort leads released OpenAI coding results, supporting frontier-small capability. Function calling and search raise autonomy, while free ChatGPT access and multiple APIs make deployment nearly universal. Deliberative alignment, hosted access, monitoring and tiered API rollout constrain misuse and control difficulty relative to open weights.
News tied to OpenAI o3-mini
The model score of 72.9 rates this model's risk profile. The overall Doom Index of 66.8 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
OpenAI releases o3-mini reasoning model across ChatGPT and API
OpenAI released o3-mini with selectable reasoning effort, function calling, structured outputs and search, extending cost-efficient STEM reasoning to free and paid ChatGPT users and API developers.
- Full item contribution
- +0.13
- OpenAI o3-mini equal share
- +0.13
Model score history
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R3
Doom Score 72.9
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-142416 under temporal-monthly-pressure-v4.
12 Aug 2026 -
R2
Doom Score 73.6
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-132112 under fixed-sensitivity-v3.
12 Aug 2026 -
R1
Doom Score 75.4
Initial exact source-backed profile for the deployed OpenAI o3-mini release.
12 Aug 2026