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Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite)

Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) is the fastest, most cost-efficient image model in the Nano Banana family, generating and editing 1K images with reliable prompt adherence, strong character consistency, and legible in-image text for high-volume production workloads.

Image GenImplicit CachingReasoningVision (Image)Web Search
index.ts
import { generateText } from 'ai'


const result = await generateText({
  model: 'google/gemini-3.1-flash-lite-image',
  prompt: 'Render a picture of a red balloon.',
});
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Frequently Asked Questions

  • How do I call Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) on AI Gateway?

    Set the model to google/gemini-3.1-flash-lite-image in the AI SDK, call generateText or streamText, and include responseModalities: ['TEXT', 'IMAGE'] in providerOptions.google. AI Gateway handles provider routing, retries, and failover automatically.

  • What resolution does Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) generate?

    1K resolution. That cap is part of what keeps Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) fast and inexpensive. For 2K or 4K output, use google/gemini-3.1-flash-image or google/gemini-3-pro-image.

  • How is Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) different from Gemini 3.1 Flash Image?

    Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) is the speed tier: lower latency and cost in exchange for the higher resolutions, video input, and search grounding of Gemini 3.1 Flash Image. Choose Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) for volume and iteration speed rather than maximum output fidelity.

  • Should I migrate from Gemini 2.5 Flash Image?

    Google recommends that google/gemini-2.5-flash-image users move to Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) for better quality, faster generation, and lower cost. The original Nano Banana is now the legacy model in the family.

  • Does Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) support image editing?

    Yes. Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) handles prompt-based edits and multi-image composition alongside text-to-image generation. Complex masked edits, major lighting changes, and heavy multi-image blending can produce artifacts, so route those jobs to a higher tier in the family.

  • Are generated images watermarked?

    Yes. Every image carries an invisible SynthID watermark that identifies the output as AI-generated.

  • How fast is Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite)?

    Google positions Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) as its fastest image generation model, built for rapid creation and iteration. See the live latency metrics on this page for current performance through AI Gateway.

  • How does Zero Data Retention work with Gemini 3.1 Flash Lite Image (Nano Banana 2 Lite) through AI Gateway?

    Yes, Zero Data Retention is available for this model. Zero Data Retention is offered on a per-provider basis. See https://vercel.com/docs/ai-gateway/capabilities/zdr for details.