OpenAI/ GPT
GPT-5.6 Luna Pro
openai/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
Released
2026-07-09
Context window
1.1M
Max output
128K
Weights
Closed
Modalities
Input
DocumentImageText
Output
Text
Identity
- Version
- gpt-5.6-luna-pro
- Knowledge cutoff
- 2026-02-16
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| OpenRouter | openai/gpt-5.6-luna-pro | openai_chat | 1.1M | 128K | DocumentImageText | Text | ReasoningTool callStructured | Moderated, Default reasoning: medium | input $0.1/M · cache read $0.01/M output $0.6/M · cache write $0.125/M | Yes |
| NanoGPT | openai/gpt-5.6-luna-pro | openai_chat | 1.1M | 128K | DocumentImageText | Text | ReasoningTool callStructured | - | input $0.1/M · cache read $0.01/M output $0.6/M · cache write $0.125/M | Yes |
| Kilo Gateway | openai/gpt-5.6-luna-pro | openai_chat | 1.1M | 128K | DocumentImageText | Text | ReasoningTool callStructured | - | input $0.2/M · cache read $0.02/M output $1.2/M · cache write $0.25/M | Yes |
Capabilities
ReasoningTool callStructured