ByteDance's Seed team has launched Seedream 5.5, an image generation model featuring three primary upgrades. The model now supports up to 100 rounds of consistent editing, maintaining pixel-level accuracy and preventing quality degradation. It also introduces native RGBA output, allowing for the generation of transparent or semi-transparent images with precise edge handling, which eliminates the need for post-processing.
The update improves visual quality by refining lighting, textures, and skin rendering to achieve a more realistic look. Additionally, text rendering capabilities have been enhanced to handle complex characters and dense text more accurately. In tests conducted on the MagicArena platform, the model showed significant improvements across six professional domains, including e-commerce, marketing, film, gaming, office work, and fashion design.
Performance metrics indicate that the usability rate for film and office scenarios has more than doubled compared to the 5.0 Pro version. In comparative evaluations, Seedream 5.5 outperformed industry peers like GPT Image 2.5 Sunburst and Nano Banana 2.1. The model achieved a 55.62% GSB score in realism for image-to-image tasks and reduced severe text error rates to 0.4%, with minor errors at 1.7%.
The new model is currently being integrated into ByteDance's suite of platforms, including Jimeng, Doubao, Doubao Work, and Volcano Engine's Ark.
