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Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)

google/gemini-3.1-flash-lite-image

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Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) is Google's fastest, most cost-efficient Gemini image model, built for high-velocity developer pipelines and rapid-fire visual exploration. It delivers text-to-image generation in roughly 4 seconds — about 2.7× faster than Gemini 3.1 Flash Image — while keeping the character consistency, precise editing, and real-world knowledge of the Nano Banana family.

A single drop-in API handles text-to-image, image editing, and multi-image composition. As a multimodal model it also returns text alongside images. Outputs are generated at 1K resolution across 14 aspect ratios and carry an invisible SynthID watermark so they can be identified as AI-generated.

Positioned as the best balance of quality and speed in the Nano Banana 2 line, it lets you generate thousands of images at a fraction of the cost of heavier production models — ideal for prototyping, real-time apps, and visual workflows at scale.

Modalities

In / Out Price

$0.25 / $1.50per 1M

Context

66K

Released

Jun 30, 2026

Knowledge Cutoff

Jan 2025

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

OpenRouter makes Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) available through a unified, OpenAI-compatible API using the model ID google/gemini-3.1-flash-lite-image. Requests can be routed across 2 providers, including Google Vertex and Google AI Studio, with automatic failover when an endpoint is unavailable.

Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) accepts images and text and returns images and text. It has a 65,536-token context window and a maximum output of 66,000 tokens.

On OpenRouter, Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) costs $0.25/M input tokens and $1.50/M output tokens, with separate rates for Image Output at $30.00/M tokens. It was released on June 30, 2026; its knowledge cutoff is January 1, 2025.

More models from Google

  • Gemini 3.7 Flash
  • Gemini 3.6 Flash
  • Gemini 3.5 Flash Lite

Frequently asked questions

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) is Google's fastest, most cost-efficient Gemini image model, built for high-velocity developer pipelines and rapid-fire visual exploration. It delivers text-to-image generation in roughly 4 seconds — about 2.7× faster than Gemini 3.1 Flash Image — while keeping the character consistency, precise editing, and real-world knowledge of the Nano...

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) costs $0.25/M input tokens and $1.50/M output tokens, with separate rates for Image Output at $30.00/M tokens.

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) has a 65,536 token context window. It supports up to 66,000 completion tokens.

The Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) endpoint shown on this page does not accept tools, so function calling is unavailable there. It supports response_format for JSON output, without JSON-schema enforcement.

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) accepts images and text as input and returns images and text. Up to 14 reference images can be attached to one request for image editing.

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) is served by 2 providers on OpenRouter: Google Vertex and Google AI Studio. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image) was released on June 30, 2026. Its knowledge cutoff is January 1, 2025.