GPT-6 Luna
GPT-6 Luna is a reasoning model from OpenAI, released on September 22, 2026, which OpenAI describes as its most efficient model for focused, high-volume tasks. It takes text and image input, returns text, and has a May 18, 2026 knowledge cutoff.
Released
September 22, 2026
Type
reasoning
License
proprietary
Context
1,050,000 tokens
Pricing
Input
$0.10 / 1M tokens
Output
$0.50 / 1M tokens
List price on the developer's own pages, checked . Standard tier, prompts up to 272K input tokens. Cached input $0.01, cache writes $0.125. Over 272K input tokens: 2x input and cache, 1.5x output for the full request ($0.20 / $0.75). Batch and Flex 50%; Fast 2x; regional processing +10%.
Capabilities
Sources
Every figure on this page was checked against these pages on . A figure we could not source is left out.
- OpenAI API docs: GPT-6 Luna (opens in a new tab)
- OpenAI API docs: Changelog (opens in a new tab)
- OpenAI API docs: Pricing (opens in a new tab)
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Links
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