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Gemini 3.1 Pro Preview Custom Tools

Benchmarks, price, context and versions

Also searched as

Gemini-3.1-Pro-Preview-Custom-Tools

Direct answer: Gemini 3.1 Pro Preview Custom Tools is a model from Google. On OpenRouter, US$ 2.00 per 1 million input tokens and US$ 12.00 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

  • when the input budget sits at the top of the table (input price in the highest 25% on OpenRouter)

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

no data

Key specs

Origin
the US
Family
Gemini Pro Preview Custom Tools provisional data
Weights?what it is
undisclosed
License
no data
Input US$/1M?
US$ 2.00
Output US$/1M
US$ 12.00
Context?
1,048,576 tokens
Parameters
no data
Input
audio, file, image, text, video
OpenRouter usage?
no data
Downloads (30 days)?
no data
Use cases provisional data
Text Agents
Dates in sources
  • 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 Pro Preview Custom Tools?

Gemini 3.1 Pro Preview Custom Tools is a model from Google, with undisclosed weights, used for text, agents.

How much does Gemini 3.1 Pro Preview Custom Tools cost?

On OpenRouter, US$ 2.00 per 1 million input tokens and US$ 12.00 per 1 million output tokens.

What is the context window of Gemini 3.1 Pro Preview Custom Tools?

1,048,576 tokens, per OpenRouter.

Is Gemini 3.1 Pro Preview Custom Tools open source?

No data in open sources.

Is Gemini 3.1 Pro Preview Custom Tools good for coding?

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

Who made Gemini 3.1 Pro Preview Custom Tools?

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

  • OpenRouter, dados públicos da API; exports de benchmarks e rankings em 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.