OpenAI
GPT-6 Luna
ReasoningClosed weights
- Intelligence
- 32.9
- Rank 110 of 744 measured models
- Output speed
- 120 t/s
- Rank 130 of 403 measured models
- Price/1M
- $0.20
- Rank 161 of 659 measured models
- Context window
- 1M
- Rank 84 of 1199 measured models
- Cost per task
- $0.029
- Rank 28 of 193 measured models
GPT-6 Luna (High) scores 32.9 on the Artificial Analysis Intelligence Index, ranking 110th of 744 measured models. The closest models on this index are Gemini 3.5 Flash (32.6), GPT-5.3 Codex (Xhigh) (32.5), and Motif 3 (Beta) (32.3). At $0.20 per million tokens (3:1 input/output blended price), it is cheaper than Gemini 3.5 Flash ($3.38) and GPT-5.3 Codex (Xhigh) ($4.81). With an output speed of 120 t/s, it is faster than GPT-5.3 Codex (Xhigh) (98.5 t/s), slower than Gemini 3.5 Flash (177 t/s).