Gemini 3.1 Pro Preview Custom Tools

google/gemini-3.1-pro-preview-customtools

Advanced Gemini model for complex reasoning, coding, and multimodal analysis

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Context window: 1M
Input: Text · Image · Video · Audio · Document
Output: Text
Released: 2026-02-19

Max output: 66K
Knowledge cutoff: 2025-01
Weights: Closed
Capabilities: Attachments, Reasoning, Tool call, Structured, Temperature

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OpenRouter	google/gemini-3.1-pro-preview-customtools	Openai chat	global

ModelRegistry · Catalog updated 2026-10-14