ByteDance

Seedream 4.0

Name: ByteDance Seedream 4.0
Author: ByteDance

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Model ID:seedream-4-0-250828

2025-08-28

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Seedream 4.0 is ByteDance's unified image creation model released in September 2025, the first in the Seedream series to integrate text-to-image generation and image editing into a single architecture. Built on a Mixture-of-Experts Diffusion Transformer backbone, it generates images at up to 4K resolution (2K default) in approximately 1.8 seconds — over ten times faster than its predecessor. The model supports up to six reference images, produces up to nine consistent outputs per batch, and excels at complex typographic rendering in English and Chinese across more than thirty artistic styles.

API|Vision|Proprietary Model

Knowledge Cutoff

Unknown

The date this AI finished learning. It may not know about things that happened after this date.

Input → Output Format

The types of content this AI can receive, and what it can produce in return.

Context Memory

N/A

The maximum amount of text the AI can read and process in a single request. A larger number means it can handle longer documents or conversations.

API Cost

$0.03/ img

The cost when using without a subscription plan. Pricing may vary by quality, resolution, or generation mode.

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AI Performance Evaluation

Arena Image Score

1140

±7

As of 2026-04-23

Overall Rank

No.19

12,627 Votes

Arena by Image Category

Art

1165±16No.11

Cartoon

1149±10No.15

Photorealistic

1153±9No.16

Portraits

1143±11No.20

Text Rendering

1143±11No.20

3D Modeling

1151±19No.14

Commercial Design

1134±11No.22

Source:Arena Intelligence

ByteDance