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Gemini 3.1 Flash Lite

Benchmarks, price, context and versions

Also searched as

Gemini-3.1-Flash-Lite

Direct answer: Gemini 3.1 Flash Lite is a model from Google. 81.8% on GPQA Diamond, per Epoch AI. On OpenRouter, US$ 0.25 per 1 million input tokens and US$ 1.50 per 1 million output tokens.

✓ Good for

  • very long documents or code (a window of 1 million tokens or more, according to OpenRouter)

✕ Not the best for

  • the ceiling of reasoning on research-level math (#67 of 86 on FrontierMath (tiers 1 to 3))
  • technical reasoning as the model appears through the API (#82 of 135 on GPQA Diamond (OpenRouter))
  • agents that follow rules and use tools (#72 of 131 on τ-bench Verified (airline))

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is
81.8%

highest score on this metric 96.4%

86º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
80%

highest score on this metric 100%

90º / 186 · Epoch AI, latest version we checked

FrontierMath (tiers 1 to 3)

?
27.7%

highest score on this metric 95.1%

67º / 86 · Epoch AI, latest version we checked

GPQA Diamond (OpenRouter)

?
82.1%

highest score on this metric 96.5%

82º / 135 · OpenRouter Benchmarks, latest version we checked

τ-bench Verified (airline)

?
72.7%

highest score on this metric 82%

72º / 131 · OpenRouter Benchmarks, latest version we checked

Key specs

Origin
the US
Family
Gemini Flash Lite provisional data
Weights?
closed
License
no data
Input US$/1M?
US$ 0.25
Output US$/1M
US$ 1.50
Context?
1,048,576 tokens
Parameters
no data
Input
audio, file, image, text, video
OpenRouter usage?
0.26%
Downloads (30 days)?
no data
Use cases provisional data
Text Agents
Dates in sources
  • 2026, published, per Epoch AI
  • 2026, listed on OpenRouter

Version history

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is Gemini 3.1 Flash Lite?

Gemini 3.1 Flash Lite is a model from Google, with closed weights, used for text, agents.

How much does Gemini 3.1 Flash Lite cost?

On OpenRouter, US$ 0.25 per 1 million input tokens and US$ 1.50 per 1 million output tokens.

What is the context window of Gemini 3.1 Flash Lite?

1,048,576 tokens, per OpenRouter.

Is Gemini 3.1 Flash Lite open source?

No. It is available through API only.

What is Gemini 3.1 Flash Lite's GPQA Diamond score?

81.8% on GPQA Diamond, per Epoch AI.

Is Gemini 3.1 Flash Lite good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Gemini 3.1 Flash Lite?

It was made by Google, a lab from the US.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Google

See lab

Sources

  • Epoch AI, CC BY 4.0, latest version we checked.
  • OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.
  • OpenRouter Benchmarks, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.