# GPT-6 Luna

OpenAI



Designed for high-volume, low-cost tasks. API pricing is $0.10 for input and $0.50 for output per million tokens. Rolling out to paid Work/Codex plans; Free/Go users can try it on desktop. Not yet available in regular Chat.


## Details

Efficiency/high-volume tier; ~50% vs GPT-5.6 Luna \($0.20/$1.20→$0.10/$0.50; cached $0.01; cache writes $0.125\); knowledge cutoff 2026-05-18

## Availability

API gpt-6-luna; ChatGPT Work + Codex for Plus/Pro/Business/Enterprise/Edu \(gradual\); not yet in Chat; Free/Go can try Luna in desktop app
- Model released: Sep 22, 2026 · Date only
- Review updated: Sep 23, 2026 08:17 Wed · Beijing Time (UTC+8)

## Sources

- Source: https://developers.openai.com/api/docs/models/gpt-6-luna

Canonical entry: https://www.ailyre.com/source/?id=openai-gpt-6-luna&lang=en