o4-mini is a closed-weights model from OpenAI, released April 16, 2025. It has an ECI score of 146 and ranks 74th of 249 tracked models. At the time of its release, it ranked 2nd of 128 tracked models.
| Domain | Benchmark | ||||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 146 | 142 | 144 | 141 | |
| Ranking | #74 | #98 | #82 | #103 | |
| Conceptual reasoning | ARC-AGI-2Best score 95% | ||||
| Games | Chess PuzzlesBest score 72% | ||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
MATH Level 5Best score 98% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | Humanity's Last ExamBest score 47% | ||||
GPQA DiamondBest score 96% | |||||
| Software engineering | METR Time HorizonsBest score 17 hr 25 min | 1 hr 17 min | 38 min 50 sec | — | 1 hr |
| World knowledge | SimpleQA VerifiedBest score 76% |