ByteDance drops Seedream 5.5, its new image model, into CapCut and Dreamina

ByteDance is putting Seedream 5.5 in front of the people who edit images for a living. The model, built by the company's Seed team, launched on November 9, 2026, and is rolling out across Dreamina, CapCut and BytePlus, with Doubao and Volcano Engine Ark also on the list. Every one of those platforms is a ByteDance property.

The headline trick is what ByteDance calls pixel-level stable multi-turn editing. Users can run up to 100 rounds of continuous local edits on a single image, with the model meant to hold detail and color accuracy through every pass, so the tenth tweak doesn't undo the first nine. Seedream 5.5 also spits out RGBA images with transparent backgrounds, ready to drop onto product pages, slides or video overlays without any cutout work.

ByteDance is backing the quality claims with numbers. Seedream 5.5 posts a severe text corruption rate of 0.4% and a minor corruption rate of 1.7% across multiple languages and formats, targeting the small, dense and multilingual text that usually turns into gibberish. Preliminary benchmarks give it a +55.62% GSB preference score for image-to-image realism over its predecessor, Seedream 5.0 Pro — a measure of how often evaluators pick one model's output over another's side by side. The research also points to progress against rivals including GPT Image 2.5 Sunburst and Nano Banana 2.1, with usability gains reportedly more than double in certain workflows.

Then comes the price. A 2K edit runs about 0.28 RMB, landing below Seedream 5.0 Pro in some tiers. ByteDance is sweetening it with promotions, including unlimited generation periods for CapCut and Dreamina users.

For now the rollout stays inside ByteDance's own walls, and third-party access has not been confirmed. The research flags the possibility of a Pro variant of Seedream 5.5, following the naming pattern set by Seedream 5.0 Pro, along with an anticipated US expansion and lower pricing tiers than the previous generation.