OpenAI
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Listed July 2026
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Compact / Edge
GPT-5.6 Luna
Arena #74 • score 1452 ±4
Proprietary model from OpenAI, listed July 2026. Arena text score 1452 (#74 of 414 entries). $0.20 input / $1.20 output per 1M tokens. 1.05M tokens context.
Parameters
Not disclosed
Context Window
1.05M tokens
Input / 1M tokens
$0.20
Output / 1M tokens
$1.20
Benchmark Results
- Arena Text Elo: 1452 (#74 of 414 on arena.ai · ±4 · 40,917 votes · variant: gpt-5.6-luna-xhigh)
- AA Intelligence Index: 37.3 (Artificial Analysis v4.3 · best setting: GPT-5.6 Luna (Max) · checked 2026-10-11)
- AA Coding Index: 71.4 (Artificial Analysis v4.3 · best setting: GPT-5.6 Luna (Max) · checked 2026-10-11)
- AA Agentic Index: 42.1 (Artificial Analysis v4.3 · best setting: GPT-5.6 Luna (Max) · checked 2026-10-11)