OpenAI
o3-pro
High-effort o3 tier for difficult technical reasoning and careful answers
Model facts
- Context window
- 2K tokens
- Maximum output
- 1K tokens
- Cheapest paid input
- $20 per 1M tokens
- Cheapest paid output
- $40 per 1M tokens
- Open weights
- no
- Providers
- 7
Capabilities and modalities
reasoning, tool calling, structured output, attachments, temperature control, text, image, pdf.
Artificial Analysis benchmarks
Compare this model on the full LLM benchmark leaderboard.
| Configuration | AAI | Coding | Math | Output tokens/s |
|---|---|---|---|---|
| default | 33.3 | not measured | not measured | not measured |
Observed price history
- 2026-08-24: $10 input / $40 output per 1M tokens
- 2026-08-28: $20 input / $40 output per 1M tokens
API providers
- Abacus — model id o3-pro; $20 input / $40 output per 1M tokens; provider documentation
- Poe — model id openai/o3-pro; $18 input / $72 output per 1M tokens; provider documentation
- Eden AI — model id openai/o3-pro; $20 input / $80 output per 1M tokens; provider documentation
- Kilo Gateway — model id openai/o3-pro; $20 input / $80 output per 1M tokens; provider documentation
- OpenAI — model id o3-pro; $20 input / $80 output per 1M tokens; provider documentation
- OpenRouter — model id openai/o3-pro; $20 input / $80 output per 1M tokens; provider documentation
- Vercel AI Gateway — model id openai/o3-pro; $20 input / $80 output per 1M tokens; provider documentation