Model Overview
OpenAI · Active Model
- Long-Context
- API Available
- Production Ready
GPT-5.6 Sol Pro is the same underlying model as [GPT-5.6 Sol](https://openrouter.ai/openai/gpt-5.6-sol), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#reasoning-mode
- Developer
- OpenAI
- Release Date
- July 9, 2026
- Context Window
- 1,050,000 tokens≈ 1,400 words
- API Access
- Publicly AvailableIntegrate via official API
- Input Cost
- $5.00per million tokens
- Output Cost
- $30.00per million tokens