GPT-5 mini
ECI#91
145GPT-5 mini is a closed-weights model from OpenAI, released August 7, 2025. It has an ECI score of 145 and ranks 91st of 254 tracked models. At the time of its release, it ranked 6th of 150 tracked models.
GPT-5 mini vs select alternatives
| Domain | Benchmark | GPT-5 mini | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 145 | 142 | 146 | 147 | |
| Ranking | #91 | #114 | #90 | #78 | |
| Games | Chess PuzzlesBest score 76% | ||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
MATH Level 5Best score 98% | |||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | GPQA DiamondBest score 96% | ||||
| Software engineering | SWE-bench VerifiedBest score 83% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
