OpenAI
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Listed April 2026
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Multimodal Foundation
GPT-5.5
Arena #24 • score 1482 ±4
Proprietary model from OpenAI, listed April 2026. Arena text score 1482 (#24 of 414 entries). $5.00 input / $30.00 output per 1M tokens. 1.05M tokens context.
Parameters
Not disclosed
Context Window
1.05M tokens
Input / 1M tokens
$5.00
Output / 1M tokens
$30.00
Benchmark Results
- Arena Text Elo: 1482 (#24 of 414 on arena.ai · ±4 · 69,437 votes · variant: gpt-5.5-high)
- AA Intelligence Index: 38.4 (Artificial Analysis v4.3 · best setting: GPT-5.5 (Xhigh) · checked 2026-10-11)
- AA Coding Index: 74.9 (Artificial Analysis v4.3 · best setting: GPT-5.5 (Xhigh) · checked 2026-10-11)
- AA Agentic Index: 36.4 (Artificial Analysis v4.3 · best setting: GPT-5.5 (Xhigh) · checked 2026-10-11)