Gemini 3.1 Pro Preview Custom Toolson Krater.ai

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

Released February 25, 2026

Specifications

Gemini 3.1 Pro Preview Custom Tools at a glance

Context

1M tokens

Max output

65.5K tokens

Input

Text, Audio, Image, Video, File

Output

Text

Input price

$2.00 / 1M

Output price

$12.00 / 1M

Image inputTool callingStructured outputsReasoning support

Capabilities

What it is good at

Catalog capabilities

  • Accepts image input
  • Generates text responses
  • Supports tool calling
  • Supports structured outputs

Good for

Image understandingLong documentsUse with toolsStructured responsesDeep analysis

FAQ

Questions about Gemini 3.1 Pro Preview Custom Tools

Clear answers based on the model catalog and Krater access.

Gemini 3.1 Pro Preview Custom Tools supports a context window of 1,048,576 tokens.

Use Gemini 3.1 Pro Preview Custom Tools in your API

Connect with Krater's unified API.

API access

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