Gemini 3.5 Flash
ECI#40
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 40th of 254 tracked models. At the time of its release, it ranked 9th of 205 tracked models.
Gemini 3.5 Flash vs select alternatives
| Domain | Benchmark | Gemini 3.5 Flash | |||
|---|---|---|---|---|---|
ECI scoreBest score 169 | 155 | 153 | 155 | 154 | |
| Ranking | #40 | #48 | #37 | #44 | |
| Games | Chess PuzzlesBest score 76% | ||||
Earthborne Rangers (EBR-bench)Best score 78% | |||||
Mystery Game PuzzlesBest score 84% | |||||
| Mathematics | FrontierMath Tiers 1-3 (v2)Best score 94% | ||||
FrontierMath Tier 4 (v2)Best score 100% | |||||
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% |
