Gemini 3.1 Pro Preview Custom Tools

Google model details for pricing, context, and release tracking.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output
Model Specs
ProviderGoogle
Model IDgoogle/gemini-3.1-pro-preview-customtools
Prompt Price
per 1M tokens		$2
Completion Price
per 1M tokens		$12
Sample Workload Cost
1M input + 500K output		$8
Context Window1.05M
Release Date2026-02-25
Popularity RankUnranked
Daily DemandN/A

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Prices are normalized to USD per 1M tokens.
Gemini 3.1 Pro Preview Custom Tools Calculating… Estimated monthly API cost
Unit prices $2 input / $12 output Per 1M tokens

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Model Introduction

Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...

Best Fit

Gemini 3.1 Pro Preview Custom Tools is best suited for long-context workloads.

Cost Example

A 1M input token plus 500K output token workload is estimated at $8.

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