o3-pro
ECI#81
147o3-pro is a closed-weights model from OpenAI, released June 10, 2025. It has an ECI score of 147 and ranks 81st of 240 tracked models. At the time of its release, it ranked 1st of 121 tracked models.
o3-pro vs select alternatives
| Domain | Benchmark | o3-pro | |||
|---|---|---|---|---|---|
ECI scoreBest score 173 | 147 | 147 | 145 | 143 | |
| Ranking | #81 | #83 | #96 | #108 | |
| Conceptual reasoning | LMCABest score 70.6 | 38.5 | 39.7 | 34.8 | 37.4 |
ARC-AGI-2Best score 95% | |||||
ARC-AGI-1Best score 99% | |||||
DTBenchBest score 99% | |||||
| Long context | Fiction.liveBenchBest score 97% | ||||
| Software engineering | Aider PolyglotBest score 88% | ||||
WeirdML (v2)Best score 94% | |||||
| Writing & creativity | Lech Mazur WritingBest score 8.6 | 8.4 | 8.4 | 8.4 | 8.4 |
