o3
ECI#65
147o3 is a closed-weights model from OpenAI, released April 16, 2025. It has an ECI score of 147 and ranks 65th of 253 tracked models. At the time of its release, it ranked 1st of 128 tracked models.
o3 vs select alternatives
| Domain | Benchmark | o3 | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 147 | 142 | 144 | 141 | |
| Ranking | #65 | #102 | #87 | #108 | |
| 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 55% | ||||
GPQA DiamondBest score 96% | |||||
| Software engineering | METR Time HorizonsBest score 17 hr 25 min | 2 hr | 38 min 50 sec | — | 1 hr |
SWE-bench VerifiedBest score 83% | |||||
| World knowledge | SimpleQA VerifiedBest score 76% |
