Stable multi-turn editing
Unedited regions stay pixel-identical across up to 100 rounds — no color drift, no detail loss.
ByteDance Seed
Edit fearlessly with Seedream 5.5
Stable multi-turn editing that keeps unedited regions pixel-perfect, native transparent PNGs, and layer decomposition into editable assets.
Seedream 5.5 Studio
generate · edit · decompose
Describe any image — marketing visuals, e-commerce shots, posters with dense text — and Seedream 5.5 renders it with realistic lighting and materials.
Click or drop images here
1–10 images (JPG/PNG/WEBP, max 10MB each). Refer to them by order in the prompt, e.g. “keep the person in Image 1 and change the background to the city in Image 2”.Click or drop one image here
One image (JPG/PNG/WEBP, max 10MB). It will be split into a base image plus separate transparent PNG layers.2–100. You prepay for the cap; unused images are refunded automatically when the task completes.
Up to 5,000 characters. Optional in Layer mode — use it to point at specific elements.
Estimated cost 30 gems
Your image will appear here
What is Seedream 5.5?
ByteDance Seed’s image model built for precise, repeatable edits — released November 9, 2026.
100 roundsStable multi-turn editing
10 refsReference-guided edits
TransparentNative alpha PNGs
LayersDecompose into assets
Why creators use Seedream 5.5
Iterate on one image without breaking the rest of it.
Native transparency
Full and partial alpha channels straight from the model — stickers and assets with no cleanup pass.
Layer decomposition
Split any image into a base plus labeled layers with stacking order and bounding boxes.
Consistent characters
Reuse characters as references across scenes while their defining features and textures hold.
Dense small text
Newspaper-style pages and infographics with accurately rendered, tightly packed characters.
Realistic materials
Natural lighting, skin and material textures — less gloss, fewer blotchy patches.
How to create an image
Pick a mode, configure the output and generate.
1. Choose a mode
Generate from text, edit with up to 10 references, or decompose one image into layers.
2. Write the prompt
Describe the whole image, or the change you want — naming what must stay unchanged.
3. Configure the output
Set aspect ratio, size (1K/2K), format and background — transparent needs PNG.
4. Generate and download
The studio estimates your cost live. Layer mode refunds unused images automatically.
Seedream 5.5 FAQ
Answers to common questions about inputs, settings and pricing.
What is Seedream 5.5?
Seedream 5.5 is ByteDance Seed’s image model for precise, repeatable editing. It keeps unedited regions intact across up to 100 rounds of editing, generates native transparent PNGs and renders dense small text more accurately.
What is the difference between the three modes?
Text to Image generates a new picture from a prompt. Image to Image edits with 1 to 10 reference images (refer to them as “Image 1”, “Image 2” in upload order). Layer Decomposition splits one image into a base image plus separate transparent PNG layers.
How does Layer Decomposition work?
Upload one image and set a cap of 2 to 100 outputs. The model returns the base image plus each layer as a transparent PNG, with stacking order, bounding box, name and description for every layer.
How does billing work?
Text and Image to Image: 15 gems per 1K image, 30 gems per 2K image. Layer Decomposition is billed at the 2K rate (30 gems) per image actually returned — you prepay for the cap and the difference is refunded automatically.
Can it create transparent backgrounds?
Yes. Set background to transparent with PNG output to get full or partial alpha-channel transparency — ideal for stickers and design assets without a separate background-removal pass.
What about multi-turn editing?
Seedream 5.5 preserves unedited regions at the pixel level and removes color shifts there, so you can keep refining the same image for up to 100 rounds without degrading the rest of the picture.
What resolutions and ratios are supported?
Sizes are 1K and 2K (2K is the default). Aspect ratios: 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3 and 21:9 — Image to Image also accepts auto. Reference images: JPG, PNG or WEBP up to 10MB each.
Ready to create your next visual?
Generate, edit and decompose images with Seedream 5.5 — the editing model that keeps its hands off what you didn’t ask to change.
Start creating with Seedream 5.5