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Gemini 3.8 Flash

ECI#16
157
Google DeepMind
Sep. 2, 2026
Closed weights

Gemini 3.8 Flash is a closed-weights model from Google DeepMind, released September 2, 2026. It has an ECI score of 157 and ranks 16th of 249 tracked models. At the time of its release, it ranked 15th of 248 tracked models.

Gemini 3.8 Flash vs select alternatives

DomainBenchmark
Gemini 3.8 Flash
Google DeepMind
Sep. 2, 2026
Closed weights
Google DeepMind
Feb. 19, 2026
Closed weights
Google DeepMind
Aug. 13, 2026
Closed weights
Alibaba
Aug. 2, 2026
Closed weights
ECI scoreBest score 166
157155157157
Ranking#16#27#12#14
Games
Chess PuzzlesBest score 72%
61%
55%
47%
29%
Mystery Game PuzzlesBest score 84%
47%
34%
37%
38%
Mathematics
68%
60%
72%
75%
22%
27%
37%
46%
OTIS Mock AIME 2024-2025Best score 100%
99%
96%
97%
99%
Science
SciCodeBest score 62%
54%
59%
58%
53%
GPQA DiamondBest score 96%
95%
94%
95%
93%
Software engineering
Text Arena (Coding)Best score 1797
1567144615871669
World knowledge
SimpleQA VerifiedBest score 76%
70%
74%
69%
46%

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