Seedream 5.5 adds native transparent-image output and editing that preserves untouched regions at pixel level, ByteDance says, demonstrating 100 successive edits; a Pro version is still to come.

ByteDance’s published MagicArena evaluation chart compares Seedream 5.5 with Seedream 5.0 Pro across six production use cases; company-reported usability and mean opinion scores.

Published 12 Nov 2026 · 16:05 UTC

ByteDance Seed ↗ · Source dated 9 Nov 2026

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