GPT-5.6 Luna Pro
OpenAIGPT-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
In
$0.20
Out
$1.20
Blended
$0.45
Where to buy this model
2 access routes| Route | In | Out | Blended | vs |
|---|---|---|---|---|
| $0.10 | $0.60 | $0.23 | - | |
| $0.20 | $1.20 | $0.45 | +96% |
● official API · ● cloud platform · ● inference host · USD per 1M tokens. Same model, different providers - price and quantization vary.
- Ctx
- 1.05M
- max output
- 128K
- cache read /1M
- $0.02
- Family
- gpt
- Modalities
- file · image · text
- Features
- json · reasoning · tools
Live pricing, updated 2026-09-15.