ZenCtrl

Seedream 4.5 is ByteDance’s latest AI-powered image-creation model that merges text-to-image synthesis and image editing into a single, unified architecture, producing high-fidelity visuals with remarkable consistency, detail, and flexibility. It significantly upgrades prior versions by more accurately identifying the main subject during multi-image editing, strictly preserving reference-image details (such as facial features, lighting, color tone, and proportions), and greatly enhancing its ability to render typography and dense or small text legibly. It handles both creation from prompts and editing of existing images: you can supply a reference image (or multiple), describe changes in natural language, such as “only keep the character in the green outline and delete other elements,” alter materials, change lighting or background, adjust layout and typography, and receive a polished result that retains visual coherence and realism.

SeedEdit is an advanced AI image-editing model developed by the ByteDance Seed team that enables users to revise an existing image using natural-language text prompts while preserving unedited regions with high fidelity. It accepts an input image plus a text description of the change (such as style conversion, object removal or replacement, background swap, lighting shift, or text change), and produces a seamlessly edited result that maintains structural integrity, resolution, and identity of the original content. The model leverages a diffusion-based architecture trained via a meta-information embedding pipeline and joint loss (combining diffusion and reward losses) to balance image reconstruction and re-generation, resulting in strong editing controllability, detail retention, and prompt adherence. The latest version (SeedEdit 3.0) supports high-resolution edits (up to 4 K), delivers fast inference (under ~10-15 seconds in many cases), and handles multi-round sequential edits.