OpenAI
GPT-5.1 Codex (high)
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Introducing GPT-5Model Snapshot
ReleaseNov 13, 2025
Context400,000
Overall
Rank #92 across 566
34.7
Coding
No rank
n/a
Blended Price
Rank #283 across 371
$3.44/M
Strength Profile
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Output Speed173.3 tok/s
First Token5.51s
Max Output128,000
Pricing
Blended$3.44/M
Input$1.25/M
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 34.7 | #92 |
| Artificial Analysis Math Index | math | 95.7 | #7 |
| MMLU-Pro | reasoning | 86.0% | #23 |
| GPQA | reasoning | 86.0% | #74 |
| Humanity's Last Exam |