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#168

Gemini 3.8 Flash

Google Release: 2026-09-02 Tested on: 2026-10-01 09:31 google/gemini-3.8-flash::low
~500B total (~20B active)MoEClosedEstimated
(high) (medium) (low)

Summary

Gemini 3.8 Flash scores 7.2 on AI BENCHY and ranks #168. It has 9.9 reliability, a 81.2% pass rate, $0.323 total cost, and 7.54s average response time.

What makes Gemini 3.8 Flash unique: It stands out most in General Intelligence, where it ranks #1, while Coding is its weakest area at #17. It is notably fast compared with similar models.

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

7.2

Consistency

8.2

Reliability

9.9

Total Cost (Current Price)

$0.323

Total Output Tokens

42,741

Total Input Tokens

215,836

Input Price

$0.750 / 1M

Output Price

$3.750 / 1M

Cache Read Price

$0.075 / 1M

Cache Write Price

$0.042 / 1M

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Tests Correct

Wrong Tests: 7

Attempt pass rate: 81.2%

Flaky tests

5

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

Response Time (avg)

7.54s

Response Time (max): 67.18s

Response Time (total): 173.36s

Wrong answer: 6 No answer: 1

Hamster playing table tennis

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

#168 Gemini 3.8 Flash

low
Cost
$0.030
Time
45.8s
Tokens
8,023 tok

Price History

Historical pricing data for this model from OpenRouter.

Date Input Price Output Price Cache Read Price Cache Write Price
2026-10-01 18:33 $0.750 / 1M $3.750 / 1M $0.075 / 1M $0.042 / 1M

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

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Category Breakdown

Category Score Consistency Tests Correct
Agentic 6.1 3.1
Anti-AI Tricks 10.0 10.0
Coding 5.4 7.2
Combined 3.8 5.8
Data parsing and extraction 10.0 10.0
Domain specific 5.8 4.4
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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