Gemini 3.1 Pro
ECI#31
155Gemini 3.1 Pro is a closed-weights model from Google DeepMind, released February 19, 2026. It has an ECI score of 155 and ranks 31st of 253 tracked models. At the time of its release, it ranked 4th of 187 tracked models.
Gemini 3.1 Pro vs select alternatives
| Domain | Benchmark | Gemini 3.1 Pro | |||
|---|---|---|---|---|---|
ECI scoreBest score 167 | 155 | 153 | 157 | 155 | |
| Ranking | #31 | #39 | #18 | #27 | |
| Games | Chess PuzzlesBest score 72% | ||||
Earthborne Rangers (EBR-bench)Best score 76% | |||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
| Multimodal | Furniture Assembly BenchmarkBest score 83% | ||||
| Science | GPQA DiamondBest score 96% | ||||
| Software engineering | SWE-bench VerifiedBest score 83% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
