LLM Reference
OpenRouter

Using Gemini 3.1 Pro Preview on OpenRouter

Implementation guide · Gemini 3.1 · Google DeepMind

Serverless

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call google/gemini-3.1-pro-preview — see the documentation for request format.
  3. 3
    You'll be billed $2.00/1M input, $12.00/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

About OpenRouter

OpenRouter provides a unified interface for Large Language Models with better pricing, improved uptime, and no subscription requirements. Route across providers for cost optimization and reliability.

OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.

View all models on OpenRouter →

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$2.00
Output tokens$12.00

Capabilities

VisionMultimodalFunction CallingTool UseStructured OutputsCode Execution

About Gemini 3.1 Pro Preview

Google: Gemini 3.1 Pro Preview available via OpenRouter. Pricing: $2/1M input, $12/1M output.

Full model details →

Model Specs

Released2026-02-19
Context1m
ArchitectureDecoder Only
Knowledge cutoff2025-01

More Models on OpenRouter

Gemini 3.1 Flash-LiteGemini 3.1 Flash Lite PreviewNano Banana 2 (Gemini 3.1 Flash Image Preview)Gemini 3.1 Pro Preview Custom Tools
All models on OpenRouter →

Also available on(4)

Google AI Studio$2.00/1MGCP Vertex AI$2.00/1MReplicate API$2.00/1M
Compare all providers →

Provider

OpenRouter
OpenRouter

OpenRouter, Inc.

New York, NY, USA