ByteDance Launches Seedream 5.5: 100 Rounds of Stable Edits, Native Transparent Output

What happened

Multi-round editing is the core of this upgrade: Seedream 5.5 supports up to 100 rounds of continuous local edits on a single image, with ByteDance saying pixels in unedited areas stay stable and composition, perspective and lighting hold across many revisions; one edit can adjust furniture, lighting, hairstyles, outfits and other local details.

Transparent output and text rendering improve together: the model supports native RGBA output, producing transparent-background images and layered assets directly; ByteDance reports a severe text-corruption rate of 0.4% and a minor rate of 1.7%, covering Chinese and English including dense small text; its GSB preference score for image-to-image realism is 55.62% higher than Seedream 5.0 Pro, a vendor benchmark figure.

Channels and pricing: the model is live in Dreamina and CapCut, with Doubao, BytePlus and Volcano Engine Ark also connected; a 2K edit costs about 0.28 yuan; the rollout is gradual and not yet open to all accounts and regions; a Seedream 5.5 Pro version follows later, with no date given.

Key facts

1. Released by: ByteDance’s Seed team, Nov 9, 2026
2. Multi-round editing: up to 100 rounds of continuous local edits on one image, with unedited pixels staying stable
3. Transparent output: native RGBA, producing transparent backgrounds and layered assets directly
4. Text rendering: vendor-reported severe corruption rate 0.4% and minor rate 1.7%; GSB preference score 55.62% above 5.0 Pro (vendor figure)
5. Channels and pricing: Dreamina, CapCut, Doubao, BytePlus and Volcano Engine Ark; about 0.28 yuan per 2K edit; gradual rollout; Pro version to follow