GPT-6 Luna
OpenAI🇺🇸
openai/gpt-6-lunaGPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol.
Cost rate
0.1x
Context
1.1M
Released
Sep 22, 2026
Input
FileImageText
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.
No top-ranked categories found.
Performance
Median latency and throughput measured across recent requests.
Throughput143 tok/s
Latency