Seedream 4.5 I2I

Seedream 4.5 image to image is ByteDance's transformer based visual edit model, specialized in taking a source image and producing a reinterpreted version while maintaining structure, character identity, and key visual relationships. It uses a high capacity vision transformer backbone along with a paired text encoder that guides style, detail, and composition changes. The model supports prompt based restyling, lighting adjustments, environmental shifts, and multi reference conditioning with up to ten input images. Seedream 4.5 also includes improved handling of fine textures and edges along with stronger color stability across iterations. The I2I mode blends the original image with prompt driven instructions through a controlled denoising process that preserves geometry while allowing flexible creative direction at resolutions up to 2048 by 2048.

December 3, 2025

Bytedance

Image to Image (I2I)