google/nano-banana-2

Google's fast image generation model with conversational editing, multi-image fusion, and character consistency

Capabilities

Reference Images

$0.047 / image

Name	Type	Description	Default	Constraints
`prompt` *	string	A text description of the image you want to generate	`—`	—
`aspect_ratio`	string	Aspect ratio of the generated image	`"match_input_image"`	match_input_image 1:1 2:3 3:2 3:4 4:3 4:5 5:4 9:16 16:9 21:9
`image_input`	array	Input images to transform or use as reference (supports up to 14 images)		—
`output_format`	string	Format of the output image	`"jpg"`	jpg png

prompt required string

A text description of the image you want to generate

aspect_ratio string

Aspect ratio of the generated image

Default: "match_input_image"

match_input_image 1:1 2:3 3:2 3:4 4:3 4:5 5:4 9:16 16:9 21:9

image_input array

Input images to transform or use as reference (supports up to 14 images)

Default:

output_format string

Format of the output image

Default: "jpg"

jpg png

Version: 4ff88d446aad Updated: 2/27/2026 359 runs