Side-by-side pricing, context window, and capabilities — try both on ChatLima.
GPT-5.6 Sol is the flagship model in OpenAI's GPT-5.6 series. It is suited for complex reasoning, coding, and agentic workflows, and is particularly strong at command-line and multi-step coding tasks...
Image and document understanding
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
Image and document understanding
| Feature | OpenAI: GPT-5.6 Sol | OpenAI: GPT-5.6 Sol Pro |
|---|---|---|
| Provider | OpenRouter | OpenRouter |
| Context Length | 1,050,000 tokens | 1,050,000 tokens |
| Input Price | $2.00/M | $2.00/M |
| Output Price | $10.00/M | $10.00/M |
| Vision Support | Yes | Yes |
| Higher cost | Yes | Yes |
| Capabilities | TextVision | TextVision |