black-forest-labs/flux-kontext-max

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A premium text-based image editing model that delivers maximum performance and improved typography generation for transforming images through natural language prompts

Capabilities

Reference ImagesSeed

Cost

Community model (estimated from hardware time)

Input Parameters

Name	Type	Description	Default	Constraints
`prompt`*	string	Text description of what you want to generate, or the instruction on how to edit the given image.	`—`	—
`aspect_ratio`	string	Aspect ratio of the generated image. Use 'match_input_image' to match the aspect ratio of the input image.	`"match_input_image"`	match_input_image1:116:99:164:33:43:22:34:55:421:99:212:11:2
`input_image`	string(uri)	Image to use as reference. Must be jpeg, png, gif, or webp.	`—`	—
`output_format`	string	Output format for the generated image	`"png"`	jpgpng
`prompt_upsampling`	boolean	Automatic prompt improvement	`false`	—
`safety_tolerance`	integer	Safety tolerance, 0 is most strict and 6 is most permissive. 2 is currently the maximum allowed when input images are used.	`2`	min: 0, max: 6
`seed`	integer	Random seed. Set for reproducible generation	`—`	—

promptrequiredstring

Text description of what you want to generate, or the instruction on how to edit the given image.

aspect_ratiostring

Aspect ratio of the generated image. Use 'match_input_image' to match the aspect ratio of the input image.

Default: "match_input_image"

match_input_image1:116:99:164:33:43:22:34:55:421:99:212:11:2

input_imagestring

Image to use as reference. Must be jpeg, png, gif, or webp.

output_formatstring

Output format for the generated image

Default: "png"

jpgpng

prompt_upsamplingboolean

Automatic prompt improvement

Default: false

safety_toleranceinteger

Safety tolerance, 0 is most strict and 6 is most permissive. 2 is currently the maximum allowed when input images are used.

Default: 2min: 0, max: 6

seedinteger

Random seed. Set for reproducible generation

Version: 8389ed8e4b16Updated: 7/25/20269.8M runs