Seedream 5.5 Ships Native Alpha
ByteDance’s image model holds still across a hundred rounds of edits and outputs transparent layers.
ByteDance released Seedream 5.5 on 9 November 2026, improving generation speed, multi-round editing stability, native RGBA transparent output and small-text rendering over Seedream 5.0 Pro. In testing, more than a hundred consecutive edits left non-edited regions pixel-identical. Doubao, Doubao Work and Jimeng are already integrated, with the API due on Volcano Ark. Pricing keeps the image-in, image-out structure with text tokens free: a 2K square edit costs about 0.28 yuan, under half of the previous model.