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openai
OpenAI: GPT-5.6 Terra Pro
openai/gpt-5.6-terra-pro
⚙ tool calling
GPT-5.6 Terra Pro is the same underlying model as [GPT-5.6 Terra](https://openrouter.ai/openai/gpt-5.6-terra), 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
specs & pricing
- Type
- text
- Provider
- openai
- Model ID
- openai/gpt-5.6-terra-pro
- Capabilities
- vision, tools, reasoning
- Context window
- 1.1M tokens
- Input price
- $2.75 / 1M tokens
- Output price
- $16.50 / 1M tokens
Cloud price is billed from prepaid credits when a request fails over to the cloud. Open-weight models run free on GPUs you own — the gateway routes to your nodes first.