Pricing and context window via OpenRouter, 2026-11-08.
OpenAI released GPT-6 Luna, a fast and cost-efficient model in the GPT-6 family, offering a 1.1M token context window at $0.10/$0.50 per 1M tokens. It sits below GPT-6 Sol and GPT-6 Astra in OpenAI's tiered model lineup, with a Pro reasoning-mode variant also available.
| Benchmark | Score | Rank | Source |
|---|---|---|---|
| AA Intelligence Index | 27.9 index | 51 of 124 | Artificial Analysis, Nov 2026 ↗ |
| Arena Elo | 1440 Elo | 65 of 151 | LMArena, Nov 2026 ↗ |
| GPQA | 90.0% | 42 of 159 | epoch.ai ↗ |
| Speed (tok/s) | 124 tok/s | 48 of 127 | Artificial Analysis, Nov 2026 ↗ |
| Hallucination Rate (lower is better) | 76.7% | 67 of 109 | Artificial Analysis, Oct 2026 ↗ |
Rank is against every model in our database with a sourced score on that benchmark, each counted once with its best score.
OpenAI has released GPT-6 Luna, the fast and cost-efficient entry in its new GPT-6 model family, featuring a 1.1M token context window and pricing starting at $0.10 per 1M input tokens. The model is positioned below GPT-6 Sol and GPT-6 Astra in OpenAI's tiered lineup.