GPT-6 Sol is a closed-weights model from OpenAI, released September 22, 2026. It has an ECI score of 164 and ranks 10th of 237 tracked models. At the time of its release, it ranked 6th of 226 tracked models.
| Domain | Benchmark | ||||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 164 | 163 | 169 | 164 | |
| Ranking | #10 | #11 | #1 – Best | #8 | |
| Games | SpireClimbBest score 34% | ||||
Chess PuzzlesBest score 76% | |||||
Earthborne Rangers (EBR-bench)Best score 78% | |||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath ErdősBest score 4% | ||||
FrontierMath Tiers 1-3 (v2)Best score 94% | |||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
| Multimodal | Furniture Assembly BenchmarkBest score 83% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |