Google

Gemini 3.1 Pro Preview Custom Tools

Name: Gemini 3.1 Pro Preview Custom Tools
Brand: Google

Canonical ID: google/gemini-3.1-pro-preview-customtools

More Google models More gemini-3.1-pro-preview-customtools family models

Gemini 3.1 Pro Preview optimized for custom tool usage

Reasoning: Yes Tool use: Yes

Overview

text image video audio pdf

Provider: Google
Family: gemini-3.1-pro-preview-customtools
Release date: 2026-02-19
Last updated: 2026-02-19
Input modalities: text, image, video, audio, pdf
Output modalities: text

Pricing and Limits

Token pricing

Input: $2/1M
Output: $12/1M
Cached input: N/A

Context and output

Context window: 1,048,576
Max output tokens: 65,536
Qualified ID: google/gemini-3.1-pro-preview-customtools

Model Summary

Gemini 3.1 Pro Preview Custom Tools is a model listing in the Google provider catalog. It is categorized under the gemini-3.1-pro-preview-customtools family.

The model supports text, image, video, audio, pdf modalities across input/output paths. Reported context capacity is 1,048,576. Pricing is listed at $2/1M input and $12/1M output.

Same Family: gemini-3.1-pro-preview-customtools

Comparable models in the same family across providers.

Browse family

Model	Provider	Context	Input	Output	Flags
Gemini 3.1 Pro Preview Custom Tools google_vertex/gemini-3.1-pro-preview-customtools	Google Vertex AI	1,048,576	$2/1M	$12/1M	Reasoning Tools
Google: Gemini 3.1 Pro Preview Custom Tools openrouter/google/gemini-3.1-pro-preview-customtools	OpenRouter	1,048,576	$2/1M	$12/1M	Tools

Gemini 3.1 Pro Preview Custom Tools

Overview

Pricing and Limits

Token pricing

Context and output

Model Summary

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