Openai
GPT-6 Luna (Fast)
GPT-6 Luna is OpenAI's efficient reasoning model for focused, high-volume tasks. It accepts text and images, generates text, and supports a 1,050,000-token context window with up to 128,000 output tokens. Configurable reasoning effort, structured outputs, prompt caching, and Responses API tools support cost-sensitive applications, coding tasks, and automated workflows.
OpenAI model releasesModel Snapshot
TypeLanguage
ReleaseSep 22, 2026
Context1,050,000
Tagsexplicit-caching, fast, file-input, implicit-caching
Overall
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Coding
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Blended Price
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Strength Profile
Percentile score by analysis domain.
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Model Details
Runtime
Max Output128,000
Streaming speed is not measured for this model yet.
Pricing
Blended-
Input-
Output-
Catalog$0.200/M in / $1.00/M out
Metadata
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All Benchmarks
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