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GPT-5.6 Sol Pro
openai/gpt-5.6-sol-pro
OpenAI / GPT
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
Released
2026-07-09
Context window
1.1M
Max output
128K
Weights
Closed
Modalities
DocumentInputImageInputTextInputTextOutput
Capabilities
ReasoningTool callStructured
Providers
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