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Gemini 3.1 Pro Preview Custom Tools

Multimodalby Google·Model page

Google's multimodal reasoning model with 1M-token context, designed for use with custom tool integrations.

Max output

Most tokens the model can return in a single response.

66Ktokens
Reasoning
Reasoning-first model

Works through a step-by-step chain of thought before answering.

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Pricing

per 1M tokens
Input$2 /1M
Output$12 /1M
Cache read$0.2 /1M
Cache write$0.375 /1M
Reasoning$12 /1M
Audio$2 /1M
Image$0.0000020
Web search$0.01

Model Description

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...

Author
G
Google
Organization · ✓
google
Details
Downloads
Likes
AccessClosed Source
Context1M tokens
Input price$2 /1M
Output price$12 /1M
CreatedFeb 25, 2026
Updated
View on Hugging Face
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Gemini 3.1 Pro Preview Custom Tools — AI Model Details | Applied