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#2

Gemini 3.8 Flash

Google Release: 2026-09-02 Tested on: 2026-10-01 02:34 google/gemini-3.8-flash::high
~500B total (~20B active)MoEClosedEstimated
(high) (medium) (low)

Summary

Gemini 3.8 Flash scores 9.9 on AI BENCHY and ranks #2. It has 10.0 reliability, a 98.6% pass rate, $1.927 total cost, and 40.60s average response time.

What makes Gemini 3.8 Flash unique: It is one of the highest-ranked models overall. It uses unusually many reasoning tokens, which can help explain its slower or more expensive runs.

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

9.9

Consistency

9.6

Reliability

10.0

Total Cost (Current Price)

$1.927

Total Output Tokens

446,728

Total Input Tokens

334,568

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: 1

Attempt pass rate: 98.6%

Flaky tests

1

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

Response Time (avg)

40.60s

Response Time (max): 177.08s

Response Time (total): 933.73s

No answer: 1

Hamster playing table tennis

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

#2 Gemini 3.8 Flash

high
Cost
$0.077
Time
129.1s
Tokens
20,373 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

Gemini 3.8 FlashhighvsGemini 3.6 FlashhighGemini 3.8 FlashhighvsGPT-6 SolhighGemini 3.8 FlashhighvsGPT-6.1 SolmaxGemini 3.8 FlashhighvsGPT-6 AstramaxGemini 3.8 FlashhighvsGPT-6.1 SolxhighGemini 3.8 FlashhighvsGPT-6 AstrahighGemini 3.8 FlashhighvsGemini 3.7 FlashhighGemini 3.8 FlashhighvsGemini 3.6 FlashmediumGemini 3.8 FlashhighvsGPT-6.1 SolmediumGemini 3.8 FlashhighvsGPT-6.1 Solhigh

Category Breakdown

Category Score Consistency Tests Correct
Agentic 10.0 10.0
Anti-AI Tricks 10.0 10.0
Coding 10.0 10.0
Combined 10.0 10.0
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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