Seedream 4.0
Seedream 4.0 is a next-gen multimodal AI image creation model developed by ByteDance's Seed Team, featuring unified generation-editing architecture, 4K UHD output, sub-second inference and strong multi-image consistency.
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What is Seedream 4.0
Seedream 4.0 is a state-of-the-art multimodal AI image creation model launched by ByteDance's Seed Team in September 2025. Built on an innovative unified framework combining Diffusion Transformer (DiT) and Variational Autoencoder (VAE), it integrates text-to-image generation, image editing, multi-image fusion and batch image production into a single toolchain. Natively supporting 1K-4K resolution output, it generates a 2K image in just 1.8 seconds—over 10x faster than its predecessor—while maintaining 99% detail retention and native support for both Chinese and English. Equipped with an Agent intelligent task orchestration hub, it can automatically decompose complex creation needs and schedule toolchains, and seamlessly connects with the Seedance ecosystem for image-to-video conversion. Ranked first in both text-to-image and image editing categories in authoritative benchmarks like Artificial Analysis, Seedream 4.0 serves as an all-in-one AI image workstation balancing professional quality and efficient creation.
Why Choose Seedream 4.0
Unified Creation Architecture
Complete the full creation workflow from text-to-image to local editing and multi-image fusion without switching tools, avoiding style drift and feature loss to boost creation efficiency
Ultra-fast & High-quality Output
Generate 2K images in 1.8 seconds and deliver 4K UHD outputs with 99% detail retention, striking a perfect balance between speed and commercial-grade visual quality
Strong Multi-image Consistency
Produce 9+ coherent images in one go, precisely maintaining character identity, scene style and visual logic, ideal for storyboarding, comics and e-commerce variant creation
Natural Language Editing
Modify images via simple text commands to add/remove elements, replace backgrounds, transfer styles or restore old photos without damaging original details
Knowledge-driven Generation
Excel at creating knowledge-intensive content such as formulas, charts and timelines, generate educational illustrations with accurate bilingual text annotations
Native Controllable Generation
Built-in visual control signals including gradient edges and depth maps enable precise control over frame structure and poses via sketches without external plugins
Seedream 4.0 Application Scenarios
E-commerce & Marketing
Generate product promotional images, campaign posters and brand materials, batch-produce style-consistent product variants to maintain brand visual unity
Film & Animation
Produce storyboards, character concept designs and virtual scenes, generate consistent multi-pose character images to accelerate animation and game development
Education & Academia
Design textbook illustrations, courseware materials and academic infographics with formulas and charts to visualize knowledge content effectively
Social Media Content
Create eye-catching video covers, social media visuals and creative 9-grid images, quickly generate multiple versions for traffic testing
Brand & IP Building
Develop virtual spokespersons and brand mascots, maintain IP style and identity across different scenarios to strengthen brand recognition
Photo Restoration
Colorize and restore old photos, or apply style transfer to existing images, giving content new value and life
How to Use Seedream 4.0
Usage Steps
Basic Creation
Enter the online tool, select text-to-image mode, input prompts including style, details and resolution requirements, and generate 2K or 4K images instantly
Image Editing
Upload reference images and describe modification needs via natural language, the model will complete edits while preserving main subject features
Multi-image Creation
Enable batch output function, upload character or style references, and generate a series of images with consistent style and subject
Precise Control
Upload sketches or line drafts as control references, combine with text commands, and let the model generate images according to preset structures
Smart Creation
Input complex requirements, the Agent hub will automatically decompose tasks and generate complete creative results
Creation Examples
For text-to-image, input commands like "Chinese-style Hanfu girl holding an oil-paper umbrella in a Jiangnan garden, 4K resolution, watercolor style". For image editing, upload a portrait and input "replace the background with autumn maple forest while keeping the character's posture" to get desired results, with support for multiple rounds of fine-tuning.
Try Seedream 4.0 Now
Enjoy one-stop 4K UHD, sub-second AI image creation experience without complex deployment
Start CreatingSeedream 4.0 FAQs
What is the maximum resolution supported by Seedream 4.0?
Seedream 4.0 natively supports 1K-4K resolution image generation, and can directly output 4K UHD images with commercial-grade detail performance to meet professional design and marketing needs.
How is Seedream 4.0's multi-image consistency effect?
Equipped with industry-leading subject consistency algorithms, Seedream 4.0 can generate 9+ coherent images in one go, precisely maintaining character identity and frame style, making it ideal for storyboarding and e-commerce variant creation.
Does Seedream 4.0 require external plugins for precise control?
Seedream 4.0 has built-in visual control signals such as gradient edges and depth maps, enabling precise control over frame structure and poses via sketches without external plugins like ControlNet.
Can Seedream 4.0 realize image-to-video creation?
Seedream 4.0 can connect with ByteDance's Seedance ecosystem to automatically convert generated static images into dynamic videos, achieving end-to-end creation from image to video.
Does Seedream 4.0 support bilingual content creation?
Yes, Seedream 4.0 provides native support for both Chinese and English, with optimized processing of bilingual semantics and text rendering, making it suitable for cross-regional creative needs.