ByteDance Seedream 5.5 holds identity across dozens of edits while GPT Image degrades in 10
vista8 · x · 2026-11-10
Blogger vista8 tested ByteDance's Seedream 5.5 for multi-turn editing consistency, finding it dramatically outperforms GPT Image 2.5/2.6.
- In a 100-round iterative test, GPT Image started degrading after 10 rounds, while Seedream 5.5 kept everything stable except a watch's moving hand.
- Outfit-swap tests: GPT Image broke the model's face after 10 rounds; Seedream 5.5 preserved the subject across dozens of edits.
- The author verified via Jimeng's canvas mode: faces and backgrounds stayed consistent across multiple outfit changes, with only minor clothing jitter.
- Verdict: controllable, multi-turn consistent editing — long the biggest pain point — is now effectively solved, with big implications for e-commerce, short drama, and film.
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