Seedream 5.5 is ByteDance’s newest image model, and it is now available in Picsart. It keeps an image steady through long editing sessions, generates transparent backgrounds on its own and makes photos and small text look more real.

ByteDance Seed announced Seedream 5.5 on November 9, 2026, as the follow-up to its Seedream 5.0 line. It can start from a written prompt or work directly on an uploaded photo.

This post covers:

  • What Seedream 5.5 is and what is new
  • How the long editing sessions work
  • Transparent backgrounds without a cutout step
  • The settings available in Picsart
  • How to start using it

Seedream 5.5 at a glance

Seedream 5.5 is a model for making and editing images, developed by ByteDance Seed, the same team that built Seedream 4 and the 5.0 line. ByteDance built it for professional visual production, where an image has to be usable on deadline, not only impressive once.

The release centers on three upgrades:

  • Stable multi-turn editing. Areas you do not touch stay the same from one edit to the next.
  • Native transparency. Images can come out with see-through backgrounds, ready to place on any design.
  • More realism and clearer text. Light, skin and materials look closer to a photo, and dense small text stays readable.

Edit the same image 100 times

Most image models wear an image down when you keep editing it. Each round feeds the last result back in, so small errors pile up: colors drift, faces change and fine details blur.

Seedream 5.5 was trained to protect everything outside the edit at the pixel level. To show it, ByteDance put a single portrait through 100 consecutive edits, using each output as the starting point for the next change. After rounds of new clothes, accessories and objects on the table, the model could still swap something as small as a ring or a pair of glasses, with the skin contact, shadows and lighting still matching the pose.

The same holds for rooms. In another demo, an old study slowly turns into a colorful space while a box moves around it. At each step, the perspective, the shadows and the part of the floor the box used to hide all stay believable.

For creators, that means one image can carry a whole idea from rough start to final version, one change at a time, without starting over when the details begin to slip.

Transparent backgrounds, straight from the prompt

Seedream 5.5 can return a PNG that carries its own alpha channel, covering both fully clear and semi-transparent areas. Switch the background mode to transparent, and the subject arrives already cut out, with clean edges and see-through areas handled by the model itself.

ByteDance’s example is a snowy owl with spread wings: the tips of the feathers, the gaps between them and the outline of the claws all come through without a separate cleanup pass. That level of edge detail matters most on hair, fur, glass and lace, where manual background removal usually struggles.

Transparent output opens a few practical workflows:

  • Stickers and graphic elements ready to drop onto a layout
  • Product cutouts for banners, ads and mockups
  • Lettering in a chosen style, where the text borrows the brushwork or material of a reference image and arrives on a clear background
  • Character sets that can be reused across a series of scenes, with poses and groupings changing while the look stays the same

More real photos, more readable text

Seedream 5.5 also improves the base image. Light falls more naturally, materials look more convincing, and skin keeps its texture instead of turning glossy or overexposed. ByteDance’s samples include a portrait lit from behind, where loose strands of hair catch the light, and a race car on a wet track, with spray from the tires blurring the cars behind it.

Text gets the same attention. The model handles dense, small lettering in both English and Chinese, from a newspaper-style page full of short articles or an infographic with tiny captions next to each close-up. For posters, labels and editorial layouts, fewer broken letters means fewer rerolls.

Seedream 5.5 settings in Picsart

Setting Options
Resolution 1K, 1.5K or 2K
Aspect ratios 1:1, 4:3, 3:4, 16:9, 9:16, 3:2, 2:3, 21:9
Source images Up to 10, as images to edit or as guides for the subject, style and composition
Negative prompt Yes, to keep unwanted elements out
Background Auto, transparent or opaque

What changed from Seedream 5.0 Pro

Seedream 5.0 Pro is still in Picsart for high-end single images. The 5.5 release adds two things 5.0 Pro does not have: editing built for many rounds and native transparent output.

In ByteDance’s own evaluations across six production areas (e-commerce, marketing, film and television, gaming, office work and fashion design), Seedream 5.5 scored higher than 5.0 Pro in every one. In film and television and in office work, the share of usable images more than doubled. ByteDance also says a Pro version of Seedream 5.5 is on the way.

What you can make with Seedream 5.5

  • Product shots in rounds. Start with one product photo, then change the surface, the props and the light across several edits while the product stays untouched.
  • Accessory and outfit try-ons. Try on new earrings, a different coat or other glasses on the same portrait and keep the face and pose identical.
  • Room makeovers. Redecorate a space step by step, moving furniture and changing colors while the room’s layout holds.
  • Sticker packs and design assets. Generate transparent elements that go straight into a layout, a story or a print file.
  • Editorial and infographic images. Build pages with small captions, labels and headlines that stay legible.

How to use Seedream 5.5 in Picsart

You’ll find Seedream 5.5 in AI Playground, in the browser or the desktop app, alongside more than 150 other models.

  1. Choose the model
    Open AI Playground and select Seedream 5.5 from the image models.
  2. Describe or upload
    Describe the image you want, or upload up to 10 images and describe what to change.
  3. Pick the settings
    Choose 1K, 1.5K or 2K, an aspect ratio and a background mode, and add a negative prompt if needed.
  4. Generate
    Run the prompt and review the result.
  5. Keep editing
    Ask for one change at a time on the new image, and repeat until it is done.

Get answers to common questions

ByteDance pushed one portrait through 100 consecutive edits, with each result used as the input for the next change. Small objects such as rings and glasses were still edited cleanly at the end of that run.

Start editing with Seedream 5.5

Seedream 5.5 turns one image into a long, steady editing session and hands back clean transparent assets when a project needs them. Open Seedream 5.5 and give it an image to work on.