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GPT-5.1 Codex High
🇺🇸OpenAI8mo
Neura Index
79.9
Rank #23—
lowCategory Profile
Benchmark Scores (1)
math
| Benchmark | Score | Source |
|---|---|---|
| AIME 2025 | 96.7 | verified |
Performance History
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Frequently Asked Questions about GPT-5.1 Codex High
What is GPT-5.1 Codex High's Neura Intelligence Index score?▾
GPT-5.1 Codex High by OpenAI scores 79.9 out of 100 on the Neura Intelligence Index, ranking #23 among tracked AI models. This composite score is computed from 1 individual benchmarks across coding, math, reasoning, and language categories.
Is GPT-5.1 Codex High open source?▾
No, GPT-5.1 Codex High is a proprietary model by OpenAI. It is only accessible via their API.
What benchmark does GPT-5.1 Codex High perform best on?▾
GPT-5.1 Codex High achieves its highest score on AIME 2025 with a score of 96.7%. This benchmark evaluates american invitational mathematics examination 2025 — competition-level math problems.