GPT-5.1
ECI#64
150GPT-5.1 is a closed-weights model from OpenAI, released November 13, 2025. It has an ECI score of 150 and ranks 64th of 254 tracked models. At the time of its release, it ranked 3rd of 160 tracked models.
GPT-5.1 vs select alternatives
| Domain | Benchmark | GPT-5.1 | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 150 | 151 | 147 | 146 | |
| Ranking | #64 | #57 | #78 | #80 | |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
ARC-AGI-1Best score 99% | |||||
| Games | Chess PuzzlesBest score 76% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | OTIS Mock AIME 2024-2025Best score 100% | ||||
| Science | Humanity's Last ExamBest score 55% | ||||
GPQA DiamondBest score 96% | |||||
| Software engineering | SWE-bench VerifiedBest score 83% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
