Gemini 3.5 Flash
ECI#28
155Gemini 3.5 Flash is a closed-weights model from Google DeepMind, released May 19, 2026. It has an ECI score of 155 and ranks 28th of 249 tracked models. At the time of its release, it ranked 10th of 217 tracked models.
Gemini 3.5 Flash vs select alternatives
| Domain | Benchmark | Gemini 3.5 Flash | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 155 | 153 | 155 | 154 | |
| Ranking | #28 | #35 | #27 | #32 | |
| 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 98% | |||||
OTIS Mock AIME 2024-2025Best score 100% | |||||
| Science | GPQA DiamondBest score 96% | ||||
| Software engineering | SWE-bench VerifiedBest score 83% | ||||
| World knowledge | SimpleQA VerifiedBest score 76% |
