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Gemini 3.1 Pro Preview Custom Tools

google/gemini-3.1-pro-preview-customtools

Google model · Served by Google · live on the gateway

Try in chatGet API key
Input / 1M
$2.00
Output / 1M
$12.00
Context
1M tokens
Max output
66K tokens
Input
Text, Image, Video, Audio, Pdf
Released
7mo ago

Pricing

Input tokens$2.00 per 1M
Output tokens$12.00 per 1M
Provider list priceExactly what your balance is debited; our fee is charged when you buy credits

About Gemini 3.1 Pro Preview Custom Tools

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

VisionReasoningTools

What it supports

  • Tool calling (function calling)
  • JSON mode and structured output
  • Image input (vision)
  • Audio input
  • Extended reasoning
  • Streaming responses
  • OpenAI SDK, Anthropic SDK and any OpenAI-compatible client

Make a request

curl https://rapidrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-3.1-pro-preview-customtools",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

Frequently asked

How do I call Gemini 3.1 Pro Preview Custom Tools through an OpenAI-compatible API?

Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to google/gemini-3.1-pro-preview-customtools. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.

What is the context window of Gemini 3.1 Pro Preview Custom Tools?

Gemini 3.1 Pro Preview Custom Tools has a context window of 1,048,576 tokens on Rapid Router, and returns up to 65,536 output tokens per reply.

What can Gemini 3.1 Pro Preview Custom Tools do?

On Rapid Router, Gemini 3.1 Pro Preview Custom Tools supports tool calling, JSON mode, image input, audio input, extended reasoning.

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