Nano Banana Pro CL Image API Guide

About the Nano Banana Pro CL API

Nano Banana Pro CL exposes the Pro CL route for fixed-cost 1K generation and editing tasks.

Available image sizes: 1K
Operations: generation and edit
Fixed local cost: 300 credits per task
Result delivery: asynchronous task polling

Best uses for Nano Banana Pro CL

Applications that specifically require the Pro CL model IDReview the request contract below before choosing this model for production traffic.

Fixed-resolution 1K outputReview the request contract below before choosing this model for production traffic.

Generation and editing through an asynchronous task APIReview the request contract below before choosing this model for production traffic.

Model summary

Fixed credit cost: 300
Output type: image
Operations: generation, edit
Image sizes: 1K

Generation request

json

{  "model": "nano-banana-pro-cl",  "prompt": "A cinematic product photograph with soft studio lighting",  "aspect_ratio": "1:1",  "image_size": "1K",  "response_format": "url"}

Image field contract

Field	Use	Values
`model`	Required model ID	nano-banana-pro-cl
`prompt`	Required generation or editing instruction	1–20,000 characters
`aspect_ratio`	Output ratio	auto, 1:1, 16:9, 9:16, 4:3, 3:4
`image_size`	Resolution tier	1K
`image_urls`	Required only for edits	1–16 public HTTPS URLs
`response_format`	Optional	url

Compare related models

Compare Nano Banana Pro CL with nearby model routes before locking an output size, duration or credit budget into your integration.

Nano Banana ProNano Banana Pro is a multi-resolution image generation and editing route with 1K, 2K and 4K output options.Nano Banana FastNano Banana Fast is the 1K route for compact generation and editing tasks with a low fixed local credit cost.Nano Banana Pro VTNano Banana Pro VT exposes the VT model route for asynchronous generation and editing in 1K, 2K or 4K.

Nano Banana Pro CL API FAQ

What can Nano Banana Pro CL do?

Nano Banana Pro CL supports asynchronous generation and edit. Nano Banana Pro CL exposes the Pro CL route for fixed-cost 1K generation and editing tasks.

Which output sizes does Nano Banana Pro CL support?

Nano Banana Pro CL supports 1K. Use the exact model ID and size fields documented on this page so the request can be validated locally.

How many credits does Nano Banana Pro CL use?

The current local price is 300 credits per generation or editing task. The task stores its quoted cost when it is created.