OpenAI
o3
Closed SourceProprietary · 200K context window
Quick info
- Provider
- OpenAI
- License
- Proprietary
- Context window
- 200K
- Task type
- text-generation
- LM Arena votes
- 58,575
- Release date
- April 16, 2025
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Description
OpenAI's flagship "o"-series reasoning model, built for hard math, science, and coding tasks. Runs an internal chain-of-thought before responding, which lifts state-of-the-art results on ARC-AGI, GPQA, and Codeforces well beyond non-reasoning models.
LM Arena benchmarks
| Board | Score |
|---|---|
| Text | 1,431 |
| Vision | 1,216 |
Pricing (per 1M tokens)
- Input price
- $2/1M
- Output price
- $8/1M