black-forest-labs/flux-2-dev

Quality image generation and editing with support for reference images

Capabilities

1:14:33:416:99:162:33:2Reference ImagesSeed

Cost

Community model (estimated from hardware time)

Input Parameters

Name	Type	Description	Default	Constraints
`prompt`*	string	Text description of the image to generate.	`—`	—
`aspect_ratio`	string	Aspect ratio for the generated image. Use 'match_input_image' to match the first input image's aspect ratio.	`"1:1"`	match_input_imagecustom1:116:93:22:34:55:49:163:44:3
`disable_safety_checker`	boolean	Disable safety checker for generated images.	`false`	—
`go_fast`	boolean	Run faster predictions with additional optimizations.	`true`	—
`height`	integer	Height of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 32 (if it's not, it will be rounded to nearest multiple of 32).	`—`	min: 256, max: 1440
`input_images`	array	List of input images for image-to-image generation. Maximum 4 images. Must be jpeg, png, gif, or webp.		—
`output_format`	string	Format of the output images.	`"webp"`	webpjpgpng
`output_quality`	integer	Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs.	`80`	min: 0, max: 100
`seed`	integer	Random seed. Set for reproducible generation.	`—`	—
`width`	integer	Width of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 32 (if it's not, it will be rounded to nearest multiple of 32).	`—`	min: 256, max: 1440

promptrequiredstring

Text description of the image to generate.

aspect_ratiostring

Aspect ratio for the generated image. Use 'match_input_image' to match the first input image's aspect ratio.

Default: "1:1"

match_input_imagecustom1:116:93:22:34:55:49:163:44:3

disable_safety_checkerboolean

Disable safety checker for generated images.

Default: false

go_fastboolean

Run faster predictions with additional optimizations.

Default: true

heightinteger

Height of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 32 (if it's not, it will be rounded to nearest multiple of 32).

min: 256, max: 1440

input_imagesarray

List of input images for image-to-image generation. Maximum 4 images. Must be jpeg, png, gif, or webp.

Default:

output_formatstring

Format of the output images.

Default: "webp"

webpjpgpng

output_qualityinteger

Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs.

Default: 80min: 0, max: 100

seedinteger

Random seed. Set for reproducible generation.

widthinteger

Width of the generated image in text-to-image mode. Only used when aspect_ratio=custom. Must be a multiple of 32 (if it's not, it will be rounded to nearest multiple of 32).

min: 256, max: 1440

Version: 7bba46bdde86Updated: 7/25/20261.2M runs