All Models
GPT 5.6 Luna Pro
GPT-5.6 Luna Pro is the same underlying model as [GPT-5.6 Luna](https://openrouter.ai/openai/gpt-5.6-luna), 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-luna-pro | $0.20/MTok | $1.20/MTok | 1.1M | 128K | |
 OpenRouter | openai/gpt-5.6-luna-pro | $0.20/MTok | $1.20/MTok | 1.1M | 128K | |
 302.AI | gpt-5.6-luna-pro | $0.20/MTok | $1.20/MTok | 1.1M | 128K | |
 Venice AI | openai-gpt-56-luna-pro | $0.25/MTok | $1.50/MTok | 1M | 128K |
Capabilities
Reasoning
Tool Calling
Attachments
Open Weights
Structured Output