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. It combines...
| Provider | |
|---|---|
| Input price | $0.500 / 1M tokens |
| Output price | $3.00 / 1M tokens |
| Context window | 66k tokens |
| Max output | 66k tokens |
| Modalities | image, text |
| Model ID | google/gemini-3.1-flash-image-preview |
A 1,000-token prompt with a 500-token answer on Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) costs roughly $0.00200. Use the OpenRouter cost calculator to price your own prompt across 400+ models, or the token counter to measure prompt length first.
PromNest stores your prompt library and lets you run any prompt on Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) with your own OpenRouter key — including side-by-side comparison with other models. Browse 1,000+ ready-made prompt templates to start.