OpenAI
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Listed July 2026
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Multimodal Foundation
GPT-5.6 Terra
Arena #50 • score 1466 ±4
Proprietary model from OpenAI, listed July 2026. Arena text score 1466 (#50 of 414 entries). $2.00 input / $12.00 output per 1M tokens. 1.05M tokens context.
Parameters
Not disclosed
Context Window
1.05M tokens
Input / 1M tokens
$2.00
Output / 1M tokens
$12.00
Benchmark Results
- Arena Text Elo: 1466 (#50 of 414 on arena.ai · ±4 · 40,278 votes · variant: gpt-5.6-terra-xhigh)
- AA Intelligence Index: 42.1 (Artificial Analysis v4.3 · best setting: GPT-5.6 Terra (Max) · checked 2026-10-11)
- AA Coding Index: 76.7 (Artificial Analysis v4.3 · best setting: GPT-5.6 Terra (Max) · checked 2026-10-11)
- AA Agentic Index: 43.2 (Artificial Analysis v4.3 · best setting: GPT-5.6 Terra (Max) · checked 2026-10-11)