google/nano-banana-pro

Google's state of the art image generation and editing model 🍌🍌

Capabilities

Reference Images

Cost

$0.059 / image

Input Parameters

Name	Type	Description	Default	Constraints
`prompt` *	string	A text description of the image you want to generate	`—`	—
`allow_fallback_model`	boolean	Fallback to another model (currently bytedance/seedream-5) if Nano Banana Pro is at capacity.	`false`	—
`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
`resolution`	string	Resolution of the generated image	`"2K"`	1K 2K 4K
`safety_filter_level`	string	block_low_and_above is strictest, block_medium_and_above blocks some prompts, block_only_high is most permissive but some prompts will still be blocked	`"block_only_high"`	block_low_and_above block_medium_and_above block_only_high

prompt required string

A text description of the image you want to generate

allow_fallback_model boolean

Fallback to another model (currently bytedance/seedream-5) if Nano Banana Pro is at capacity.

Default: false

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

resolution string

Resolution of the generated image

Default: "2K"

1K 2K 4K

safety_filter_level string

block_low_and_above is strictest, block_medium_and_above blocks some prompts, block_only_high is most permissive but some prompts will still be blocked

Default: "block_only_high"

block_low_and_above block_medium_and_above block_only_high

Version: 712e06a8e122 Updated: 2/28/2026 15.5M runs