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.
- Context window: 1,050,000 tokens
- Input: file, image, text
- Output: text
- Pricing: $1/M input tokens, $5/M output tokens
View on OpenRouter.
Model data sourced from OpenRouter.