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.
text + image + file → text · made by OpenAI
Sold by 9 ways
| Seller | Lane | Rate |
|---|---|---|
| Nous Research 2 ways | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache write | |
| Nous Research aggregator | batch | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cachedinference-api.nousresearch.com · read 2026-09-12 |
| Nous Research aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writeinference-api.nousresearch.com · read 2026-09-12 |
| OpenRouter 5 ways | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache write | |
| OpenRouter aggregator | batch | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cachedopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | openai/flex | $0.1per Mtok in$0.6per Mtok out$0.01per Mtok cached$0.12per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | standard | $0.2per Mtok in$1.2per Mtok out$0.02per Mtok cached$0.25per Mtok cache writeopenrouter.ai · read 2026-08-24 |
| OpenRouter aggregator | azure/eu | $0.22per Mtok in$1.32per Mtok out$0.022per Mtok cached$0.28per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| OpenRouter aggregator | openai/fast | $0.4per Mtok in$2.4per Mtok out$0.04per Mtok cached$0.5per Mtok cache writeopenrouter.ai · read 2026-08-30 |
| OpenRouter aggregatornot on the seller's list today | openai/priority | $0.4per Mtok in$2.4per Mtok out$0.04per Mtok cached$0.5per Mtok cache writeopenrouter.ai · read 2026-08-25 |
| Venice AI aggregator | standard | $0.25per Mtok in$1.5per Mtok out$0.025per Mtok cached$0.31per Mtok cache writemodels.dev · read 2026-09-16 |
About
GPT-5.6 Luna Pro — a text model from OpenAI, sold by 3 companies from $0.2 in and $1.2 out per million tokens.
It takes text, images and files and returns text, with a context window of 1,050,000 tokens. It was published in July 2026, trained on material up to February 2026. Its sellers say it can reason step by step and call a tool. The catalogue files it under chat. Three companies sell it. The cheapest is $0.2 in and $1.2 out per million tokens at Nous Research. Beside the standard rate there are batch, regional, faster and flex lanes.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 1,050,000 tokens
- Longest answer
- 128,000 tokens
- Published
- July 2026
- Knowledge to
- February 2026
- Licence
- not read
- Sellers
- 3
- Maker's own price
- not read
- Price
- $0.2 in and $1.2 out per million tokens — Nous Research
Known as 3 names
openai/gpt-5.6-luna-proopenai/gpt-5.6-luna-pro:batchOpenAI: GPT-5.6 Luna Pro (batch)