All Models
GPT 5.6 Terra Pro
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
Available Providers (4)
| Provider | Model ID | Input Cost | Output Cost | Context | Max Output | Docs |
|---|---|---|---|---|---|---|
 NanoGPT | openai/gpt-5.6-terra-pro | $2/MTok | $12/MTok | 1.1M | 128K | |
 OpenRouter | openai/gpt-5.6-terra-pro | $2/MTok | $12/MTok | 1.1M | 128K | |
 302.AI | gpt-5.6-terra-pro | $2/MTok | $12/MTok | 1.1M | 128K | |
 Venice AI | openai-gpt-56-terra-pro | $2.50/MTok | $15/MTok | 1M | 128K |
Capabilities
Reasoning
Tool Calling
Attachments
Open Weights
Structured Output