# Gemini 3.1 Flash Image (Nano Banana 2)

> Nano Banana 2 — current default Gemini image model.

Canonical: https://routemux.com/google/gemini-3.1-flash-image
Provider: Google

## Key facts

| Field | Value |
| --- | --- |
| Model ID | google/gemini-3.1-flash-image |
| Official model ID | gemini-3.1-flash-image |
| Context window | 131K |
| Max output | 33K |
| Input modalities | text, image, video |
| Output modalities | text, image |
| Capabilities | Vision, Image Generation, Image Edit, Video Input |
| Availability | available |

## Pricing

- RouteMux: $18 per 1M tokens
- Official: $60 per 1M tokens
- Saving vs official: 70%
- Official price source: gemini_image_x0.5, verified 2026-06-08

Billing is prepaid wallet, charged per successful request only.

## API access

Base URL: https://api.routemux.com

Supported protocols:

- google_vertex_ai

Aliases that also route here: gemini-3.1-flash-image-preview, google/nanobanan2, google/nano-banana-2, google/nano_banana_2, google/nanobanana-2, google/nanobanana2, models/gemini-3.1-flash-image, models/gemini-3.1-flash-image-preview, nanobanan2, nano-banana-2, nano-banana2, nano_banana_2, nanobanana-2, nanobanana2

## Other variants in this family

- Gemini 3 Pro Image (Nano Banana Pro) (`google/gemini-3-pro-image`)
- Gemini 2.5 Flash Image (Nano Banana) (`google/gemini-2.5-flash-image`)