bytedance/seedream-5-pro

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ByteDance's flagship text-to-image and image editing model, generating sharp 1K and 2K images from text or up to 10 reference images

Capabilities

Reference Images

Cost

$0.090 / image

Input Parameters

Name	Type	Description	Default	Constraints
`aspect_ratio`	string	Image aspect ratio (ignored in layer decomposition mode). Use 'match_input_image' to automatically match the input image's aspect ratio.	`"match_input_image"`	match_input_image1:14:33:416:99:163:22:321:9
`image_input`	array	Input image(s). In standard mode, 1-10 reference images for image-to-image generation. In layer decomposition mode, exactly one image to decompose.		—
`layer_decomposition`	boolean	Split a single input image into a base image plus separate element layers (up to 16). Requires exactly one input image. Each returned layer includes its stacking order, bounding box, name, and description.	`false`	—
`output_format`	string	Output image format. In layer decomposition mode this only controls the base image; layers are always returned as PNG.	`"png"`	pngjpeg
`prompt`	string	Text prompt. In standard mode, describes the image to generate. In layer decomposition mode it is optional: describe which elements to split out, or leave blank to auto-detect all major elements. Maximum 4000 characters.	`""`	—
`size`	string	Image resolution. Standard mode supports 1K and 2K. Layer decomposition mode supports 1K, 1.5K, 2K, and auto; auto sizes the base image and layers from the input image.	`"2K"`	1K1.5K2Kauto

aspect_ratiostring

Image aspect ratio (ignored in layer decomposition mode). Use 'match_input_image' to automatically match the input image's aspect ratio.

Default: "match_input_image"

match_input_image1:14:33:416:99:163:22:321:9

image_inputarray

Input image(s). In standard mode, 1-10 reference images for image-to-image generation. In layer decomposition mode, exactly one image to decompose.

Default:

layer_decompositionboolean

Split a single input image into a base image plus separate element layers (up to 16). Requires exactly one input image. Each returned layer includes its stacking order, bounding box, name, and description.

Default: false

output_formatstring

Output image format. In layer decomposition mode this only controls the base image; layers are always returned as PNG.

Default: "png"

pngjpeg

promptstring

Text prompt. In standard mode, describes the image to generate. In layer decomposition mode it is optional: describe which elements to split out, or leave blank to auto-detect all major elements. Maximum 4000 characters.

Default: ""

sizestring

Image resolution. Standard mode supports 1K and 2K. Layer decomposition mode supports 1K, 1.5K, 2K, and auto; auto sizes the base image and layers from the input image.

Default: "2K"

1K1.5K2Kauto

Version: 91daad99b90fUpdated: 11/7/2026767.9K runs