Seedream 5.5

Seedream 5.5 is ByteDance's image generation and editing model, focused on visual realism, aesthetics and editing consistency. It supports text-to-image and reference-guided editing with up to 10 input images, keeps unedited areas stable across multi-turn edits, and outputs transparent images from a prompt or from references. It can also split an image into a base image and up to 99 editable layers, returning the text, position, font and style of each text layer, which suits poster, packaging and marketing design workflows.

Complete technical specification for integration
Ready-to-use code snippets for common workflows
Step-by-step tutorials for advanced use cases
Prompting
How to write text-to-image prompts for Seedream 5.5: choosing between resolution tiers and exact sizes, layering a prompt into directives, and setting exact copy on the image.
Editing images
How to edit images with Seedream 5.5: an instruction to recolor, clean up or relight one photo, a drawn mark to pick the target, and edits chained over several rounds.
Multi-reference composition
How to compose one image from up to ten references with Seedream 5.5: assigning roles, dressing one model in a garment range, arranging a product set and sizing the output.
Layer decomposition
How to split one image into a base image and transparent layers with Seedream 5.5, from layer positions and split size to reading the text on text layers.
Transparent backgrounds
How to make cut-out assets with Seedream 5.5: transparent output from a prompt or an existing photo, the auto default, matching sticker sets and soft hair edges.