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Gemini 3.8 Flash

ECI#19
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 19th of 260 tracked models. At the time of its release, it ranked 12th of 249 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
Moonshot
Jul. 16, 2026
Open weights
ECI scoreBest score 167
157155157157
Ranking#19#36#18#17
Games
Chess PuzzlesBest score 74%
58%
55%
66%
37%
Mystery Game PuzzlesBest score 84%
47%
34%
37%
26%
Mathematics
68%
60%
72%
72%
FrontierMath Tier 4 (v2)Best score 100%
22%
27%
37%
39%
OTIS Mock AIME 2024-2025Best score 100%
99%
96%
97%
97%
Multimodal
32%
27%
27%
34%
Science
Humanity's Last ExamBest score 55%
45%
46%
n/a
n/a
GPQA DiamondBest score 96%
95%
94%
95%
93%
World knowledge
SimpleQA VerifiedBest score 76%
70%
74%
69%
51%

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