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#17

Gemini 3.8 Flash

Google Release: 2026-09-02 Tested on: 2026-09-02 20:06 google/gemini-3.8-flash::medium
~500B total (~20B active)MoEClosedEstimated
(high) (medium) (low)

Summary

Gemini 3.8 Flash scores 9.1 on AI BENCHY and ranks #17. It has 10.0 reliability, a 92.4% pass rate, $0.653 total cost, and 14.50s average response time.

What makes Gemini 3.8 Flash unique: It stands out most in Domain specific, where it ranks #1, while Combined is its weakest area at #15. Its total benchmark cost is unusually low for its score range.

Model facts

Researched on 2026-09-02

Estimated
Parameters
~500B total (~20B active)
Architecture
MoE
Availability
Closed
License
-

Best estimate from public evidence; the vendor did not disclose every value. Google documents this model as based on Gemini 3.7 Flash but does not disclose architecture or parameter counts; estimates follow the related 3.7 Flash record.

Parameter source Availability source

Score

9.1

Consistency

9.3

Reliability

10.0

Total Cost (Current Price)

$0.653

Total Output Tokens

154,908

Total Input Tokens

95,793

Input Price

$0.750 / 1M

Output Price

$3.750 / 1M

Tests Correct

Wrong Tests: 3

Attempt pass rate: 92.4%

Flaky tests

2

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

14.50s

Response Time (max): 108.60s

Response Time (total): 318.92s

Wrong answer: 2 Invalid tool call: 1

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#17 Gemini 3.8 Flash

medium
Cost
$0.037
Time
54.6s
Tokens
9,712 tok

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Gemini 3.8 FlashmediumvsClaude Opus 5mediumGemini 3.8 FlashmediumvsSeed 2.1 TurbolowGemini 3.8 FlashmediumvsClaude Opus 5highGemini 3.8 FlashmediumvsQwen3.7 MaxmediumGemini 3.8 FlashmediumvsGemini 3.7 FlashlowGemini 3.8 FlashmediumvsClaude Fable 5.1highGemini 3.8 FlashmediumvsGemini 3.1 Pro PreviewmediumGemini 3.8 FlashmediumvsGemini 3.5 FlashmediumGemini 3.8 FlashmediumvsGrok 4.6highGemini 3.8 FlashmediumvsGPT-5.5medium

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 10.0 10.0
Coding 8.0 9.9
Combined 8.7 6.9
Data parsing and extraction 10.0 10.0
Domain specific 8.2 7.2
General Intelligence 10.0 10.0
Instructions following 10.0 10.0
Puzzle Solving 10.0 10.0
Tool Calling 10.0 10.0
Trivia 10.0 10.0

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