ByteDance launches Seedream 5.5: 100-round iterative editing, RGBA output, ~$0.04 per image
智东西 · wechat · 2026-11-09
ByteDance's Seed team released Seedream 5.5, four months after its predecessor, with three headline upgrades: stable multi-round editing (up to 100 iterations with pixel-level preservation of unedited regions), native RGBA transparent asset generation, and improved complex Chinese text rendering plus photoreal texture. Already live in Doubao; Jimeng AI and Volcengine Ark rolling out, with a Pro version planned. Zhidx testing: solid iterative editing on portraits and interiors, but hands and small objects like glasses still error-prone; transparent assets compose well into new designs. API pricing: 0.28 yuan ($0.04) per 2K edited image, less than half of Seedream 5.0 Pro, 5-10s generation.
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