GPT-5.1-Codex
openai/gpt-5.1-codex
Creator
OpenAIReleased
2025-11-12Weights
not reportedContext
400k tokens ~Price in / out per Mtok
$1.25 ~ / $10.00 ~OpenRouter routed price — not the vendor's list price, fetched 2026-10-19
State
rankedHealth summary
5 of 5 scores sit on benchmarks that still discriminate. Every number here has been measured independently. 5 sit on benchmarks with a high risk of test-set contamination.
Scores
| Benchmark | Config | Score | Harness | Provenance | Measured | Health |
|---|---|---|---|---|---|---|
| Coding | ||||||
| Terminal-Benchactive | base | 57.8% | Codex CLI | ind. | 2025-11-12 | contaminated |
| Terminal-Benchactive | base | 57.8% | Crux | ind. | 2025-11-12 | contaminated |
| Terminal-Benchactive | base | 53.5% | Letta Code | ind. | 2025-11-12 | contaminated |
| Terminal-Benchactive | base | 36.9% | Terminus 2 | ind. | 2025-11-12 | contaminateddisputed |