OpenAI o3
o3 is OpenAI's advanced reasoning model, trained with large-scale reinforcement learning to think before answering. It achieves state-of-the-art results on competitive math, science, and coding benchmarks, trading speed for accuracy.
- Best-in-class on math, science, and logic benchmarks
- Extended reasoning reduces errors on hard problems
- Consistent reliability for high-stakes tasks
- Available via ChatGPT Plus and API
- Significantly higher cost than GPT-4o
- Slower response times due to reasoning overhead
- Overkill for routine tasks
- API usage requires careful token management
Best fit
- researchers
- competitive programmers
- high-accuracy reasoning tasks
- real-time chat
- budget-conscious workflows
At a glance
Category research paths
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