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Gemini 3.8 Flash

Released on 2 September 2026

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Specifications

Lab
Google (United States)
Weights
Proprietary
Context window
1M tokens
Maximum output
66k tokens
Input / output price
$0.75 / $3.75 per million tokens
Input modalities
  • Text
  • Image
  • Video
  • PDF
  • Audio
Reasoning
Yes
OpenRouter identifier
google/gemini-3.8-flashDated version, as of 8 October 2026: google/gemini-3.8-flash-20260902

At a glance

Updated 8 October 2026

Business Index

98.9%± 1.6 (95% margin of error)

Rank 10 / 27

54.8%100.0%

Average cost per test

$0.0053

15th cheapest of 27

$0.0002$0.058

Median time

5.6 s

16th fastest of 27

1.5 s29.1 s
Average hallucinations
0.0%
Benchmarks taken
2 / 2

Scores by business function

The model's mean accuracy across the benchmarks of each business function.

Accuracy
  • Finance

    98.4%

  • Accounting

    99.3%

  • Human resources

    Not tested

  • Legal

    Not tested

  • Sales

    Not tested

  • Marketing

    Not tested

  • Customer service

    Not tested

  • Procurement & logistics

    Not tested

  • IT

    Not tested

  • Management

    Not tested

Results by benchmark

Finance

Accounting

Bars on a 0 to 100% scale. The rank compares the models tested on the same benchmark.

Stability from run to run

A given model alias can change behaviour without notice; re-testing it at every run is how that drift gets caught.

No benchmark has been published twice with this model yet: there is no curve to draw.

Updates