Volcano Ark

ByteDance's Seed team released Seedream 5.5, an image editing model that keeps unedited regions pixel-identical, with an official demo showing a character edited 100 rounds without drift, plus native transparent-background output. Severe text error rate dropped from 2.8% to 0.4%, and 2K square-image editing costs about RMB 0.28 per image, less than half of Seedream 5.0 Pro. The model is rolling out on Jimeng, Doubao and Doubao Work, and is available to developers via Volcano Ark as Doubao-Seedream-5.5.