LLM Reference
OpenRouter

Using Gemini 3.1 Flash Lite Preview on OpenRouter

Implementation guide · Gemini 3.1 · Google DeepMind

Serverless

OpenRouter exposes Gemini 3.1 Flash Lite Preview through model ID google/gemini-3.1-flash-lite-preview. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-15. Next refresh: weekly.

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-flash-lite-preview — see the documentation for request format.
  3. 3
    You'll be billed $0.25/1M input, $1.50/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$0.25
Output tokens$1.50

Capabilities

VisionMultimodalJSON / Tool useStructured OutputsCode Execution

About Gemini 3.1 Flash Lite Preview

Preview-stage Gemini 3.1 Flash-Lite model shut down on 2026-05-25; use gemini-3.1-flash-lite GA instead.

Full model details →

Model Specs

Released2026-03-03
Context1m
ArchitectureDecoder Only
Knowledge cutoff2025-01

More Models on OpenRouter

Gemini 3.1 Flash-LiteNano Banana 2 (Gemini 3.1 Flash Image Preview)Gemini 3.1 Pro Preview Custom ToolsGemini 3.1 Pro Preview
All models on OpenRouter →

Also available on(3)

Google AI Studio$0.25/1MGCP Vertex AI$0.25/1MVercel AI Gateway$0.25/1M
Compare all providers →

Provider

OpenRouter
OpenRouter

OpenRouter, Inc.

New York, NY, USA