Using Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) on OpenRouter

Implementation guide · Gemini 3.1 · Google DeepMind

Serverless

OpenRouter exposes Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) through model ID google/gemini-3.1-flash-lite-image. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-19. 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-image — 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

VisionMultimodalReasoningBatch API

About Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite)

Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite; API id gemini-3.1-flash-lite-image) is Google's efficiency-focused image generation/editing model. Inputs text/image/video/PDF; outputs image+text. FP limits 65536/4096. Paid: $0.25/1M input, $1.50/1M text output, $30/1M image output (~$0.0336/1K image).

Full model details →

Model Specs

Context64K

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 ToolsGemini 3.1 Pro PreviewNano Banana 2 (Gemini 3.1 Flash Image)
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, Inc.

New York, NY, USA