GPT-5.2 Pro
ECI#31
157GPT-5.2 Pro is a closed-weights model from OpenAI, released December 11, 2025. It has an ECI score of 157 and ranks 31st of 254 tracked models. At the time of its release, it ranked 1st of 165 tracked models.
GPT-5.2 Pro vs select alternatives
| Domain | Benchmark | GPT-5.2 Pro | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 157 | 151 | 153 | 150 | |
| Ranking | #31 | #57 | #48 | #62 | |
| Conceptual reasoning | SimpleBenchBest score 82% | ||||
ARC-AGI-2Best score 95% | |||||
ARC-AGI-1Best score 99% | |||||
| Games | Chess PuzzlesBest score 76% | ||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 100% |
