Seedream

As a new-generation image creation model, Seedream 4.0 integrates image generation and image editing capabilities into a single, unified architecture. It supports multimodal inputs, reference images, and can produce high-definition images up to 4K with fast inference speed.

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Introduction

Seedream 4.0 is the latest image-generation model from ByteDance’s “Seed” group. It unifies image generation and precise editing in one system, enabling users to input text and/or multiple reference images to guide outputs. Key features include:

Producing ultra-high-definition images (up to 4K)
Batch input & output support: generate multiple images in one go with consistency
Prompt-based editing: one sentence can change content, layout, text on images, etc.
Strong performance on metrics like prompt adherence, alignment, aesthetics — it claims to beat Google’s “Nano Banana” (Gemini 2.5 Flash Image) on internal benchmarks.
Aimed at creators, designers, advertisers, marketing teams, i.e. use cases needing speed, consistency, style control.

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Information

Websiteseed.bytedance.com
AuthorsByteDance Seed
Published date2025/09/10

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