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Image Generation

Nano Banana Pro (Gemini 3)

Image Generation/Edit using Nano Banana Pro (Gemini 3), 2K or 4K

post/v2/generation/nano-banana-pro

Query parameters

webhookUrlstring

Your Webhook URL, if specified, the result of the generation will be POSTed to this URL.

demoMode'failure' | 'success'

This parameter is used when the api key mode is 'development', default value is 'success'.

when set to 'failure', the dummy generation will be 'failed' after a few seconds, if set to 'success', the dummy generation will be 'completed' after a few seconds.

Request body

promptstring required
quality'2K' | '4K' required
imagesstring[]

An array of image names or download URLs - if you don't have a download URL, you can upload the file and get the file name from the /upload endpoint.

aspectRatio'auto' | '21:9' | '1:1' | '4:3' | '3:2' | '2:3' | '5:4' | '4:5' | '3:4' | '16:9' | '9:16' required

When no input image provided, aspect ratio cannot be auto

Example request

{
  "prompt": "<your-prompt>",
  "images": [
    "image download URL - or file name obtained from /upload endpoint"
  ]
}

Response

Response for status 200

genIdstring required

Changes

Changed in 1 of the 8 revisions of this API.1