GPT-6 Astra
ECI#1 – Best
167GPT-6 Astra is a closed-weights model from OpenAI, released September 3, 2026. It has an ECI score of 167 and ranks 1st of 251 tracked models.
GPT-6 Astra vs select alternatives
| Domain | Benchmark | GPT-6 Astra | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 167 | 162 | 165 | 158 | |
| Ranking | #1 – Best | #5 | #2 | #11 | |
| Games | Chess PuzzlesBest score 72% | ||||
Earthborne Rangers (EBR-bench)Best score 76% | |||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath ErdősBest score 3% | ||||
FrontierMath Tiers 1-3 (v2)Best score 94% | |||||
FrontierMath Tier 4 (v2)Best score 98% | |||||
| Multimodal | Furniture Assembly BenchmarkBest score 83% | ||||
| Software engineering | MirrorCodeBest score 73% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
