o3-pro
OpenAI · High-effort o3 tier for difficult technical reasoning and careful answers
Key facts
- Provider
- OpenAI
- Context window
- 200K tokens
- Max output
- 100K tokens
- Input price
- $20 / M tok
- Output price
- $80 / M tok
- Knowledge cutoff
- May 2024
- Released
- Jun 10, 2025
- License
- —
Capabilities
ReasoningTool callingStructured outputFile attachmentsTemperature controlOpen weights
Reasoning options
- effort low · medium · high
Pricing
USD per million tokens, list API rates.
- Input
- $20
- Output
- $80
- Cache read
- —
- Cache write
- —
Modalities
- Input
- Text, Image
- Output
- Text