GPT-5.1-Codex-mini
GPT-5.1-Codex-mini.
OpenAI Released 12 Nov 2025
5
Benchmarks with a score
0
Ranked first, out of five or more models
0
In the top three
OpenAI Nov 2025
GPT-5.1-Codex-mini
Closed weights
No Epoch Capabilities Index score yet
- Terminal-Bench 2.0 61.6% #11 /43
Where it ranks
Its best score on each benchmark, and where that ranks among every model with a score there. We rank each model once, at its best setting.
Coding
| Benchmark | Score | Rank | Source | |
|---|---|---|---|---|
| Code Arena | 1,244 | #113 of 124 | Official leaderboard | |
| WebDev Arena | 1,247 | #96 of 105 | Epoch AI |
Agents and tools
| Benchmark | Score | Rank | Source | |
|---|---|---|---|---|
| SnakeBench | 37 | #6 of 183 | Official leaderboard | |
| Terminal-Bench 2.0 | 61.6% | #11 of 43 | Official leaderboard | |
| LLM Chess | 544 | #39 of 124 | Official leaderboard |