ByteDance unveiled Seedream 4.0 on September 12, 2025, the next generation of its flagship image model. A key feature of the new version is a unified architecture that combines the processes of "from-scratch" generation and subsequent editing into a single mechanism. This ensures high consistency in style, lighting, and details when making changes to an already created image. The model also boasts significantly increased speed—according to the company, generating a 2K resolution image takes less than 2 seconds, with support for generation up to 4K. Seedream 4.0 is positioned as a commercially efficient solution capable of competing with leading global counterparts in areas such as advertising, design, and content creation, thanks to its combination of speed, high resolution, and advanced natural language editing capabilities.
ByteDance Unveils Seedream 4.0 — A Unified Model for Image Generation and Editing
