Google / Model reference

Nano Banana 2

Name: Nano Banana 2
Author: Google

Google model available through the Celeste SDK. Explore its supported operations and parameters.

See the code

Model IDgemini-3.1-flash-image-preview

What it can do.

celeste.images.generateGenerate images

celeste.images.editTransform an image

Parameters.

Supported controls from Celeste’s model registry. Values and availability differ between models.

Nano Banana 2 parameters and constraints
Parameter	Accepted values
`aspect_ratio`	`1:12:33:23:44:34:55:49:1616:921:9`
`quality`	`1K2K4K`
`reference_images`	Image artifacts

Start with a few lines

Put it to work.

Use your provider credentials. Call the model through the SDK and build around its output.

import celeste
response = await celeste.images.generate(
    model="gemini-3.1-flash-image-preview",
    prompt="A quiet observatory on a volcanic coast at dawn."
)
image = response.content

This example uses images.generate. Explore the quickstart for installation and authentication.