AI model · Google
Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Model ID: google/gemini-3.1-flash-image-preview
- Input
- $0.50 per 1M tokens
- Output
- $3 per 1M tokens
- Context
- 66K tokens at once
- Max output
- 59K tokens per reply
- Released
- 26 Feb 2026 Google
What it can do
- YesReasoning
- NoTool calling
- YesImage input
- NoOpen weights
- NoFree to use
Takes image, text; gives image, text.
How its listing describes it
Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed.
Sources
- Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) on OpenRouter — read 2 Oct 2026