Seedream 4.0
Bytedance's ultra-fast AI image generator & editor
Seedream 4.0 Overview
Seedream 4.0 is ByteDance's cutting-edge multimodal AI image generation and editing platform that revolutionizes creative workflows. Its core technology enables generating stunning 2K resolution images in just 1.8 seconds with 99% detail retention. The platform combines text-to-image and image-to-image generation with natural language precision editing capabilities. Designed for professionals across industries including design, e-commerce, advertising, and film production, Seedream 4.0 dramatically reduces content creation time while maintaining professional quality standards. Key differentiators include industry-leading generation speed, bilingual English/Chinese support, seamless video integration with Seedance, and advanced features for multi-image workflows and character consistency.
Seedream 4.0 Screenshot

Seedream 4.0 Official screenshot of the tool interface
Seedream 4.0 Core Features
Ultra-Fast 2K Generation
Seedream 4.0 generates high-quality 2K resolution images in just 1.8 seconds - 10x faster than traditional tools. The proprietary multimodal transformer architecture and optimized inference ensure real-time performance suitable for professional workflows where speed is critical, without compromising on the 99% detail retention rate.
Natural Language Precision Editing
Users can make complex edits by simply describing changes in natural language. The AI understands prompts like 'Remove the boy in this picture' or 'Change to Hong Kong 90s style' with 95%+ accuracy. Advanced attention mechanisms preserve perfect detail and fidelity during edits.
High-Fidelity Character Consistency
Maintains consistent character identity across different styles and multiple edits, preventing the distortion or uncanny results common in other AI tools. This is particularly valuable for comics, storyboards, and branded content requiring coherent character representation.
Multi-Image Workflows
Supports using multiple reference images to generate coherent sequences for narratives, storyboards, or product variations. Creators can maintain visual continuity across a series of images while exploring different styles or scenarios.
Seamless Video Integration
Direct integration with Seedance allows transforming static Seedream-generated images into dynamic videos within a unified workflow. This end-to-end solution significantly reduces production time for video content creators.
Bilingual English/Chinese Support
Native support for both English and Chinese languages enables seamless creative work across different linguistic contexts. The AI comprehends complex prompts and contextual logic equally well in both languages.
Seedream 4.0 Use Cases
E-commerce Product Visualization
Retailers can generate photorealistic product images in various settings and styles. For example, placing a product image into different interior scenes with matched lighting and perspective, creating cohesive brand imagery across multiple product categories with consistent styling.
Branded Content Creation
Marketing teams can rapidly produce complete sets of branded merchandise visuals - packaging, promotional items, ads - all maintaining consistent color schemes and design language. Enables fast iteration of campaign concepts with different styles while preserving brand identity.
Film & Storyboard Production
Film creators can generate sequential storyboard panels with consistent characters and visual tone. The multi-image capability ensures continuity across frames, while the video integration allows quick expansion to animated sequences when ready for production.
Game Asset Development
Game studios can create varied character designs and environmental assets while maintaining artistic consistency. The AI can generate multiple style variations of the same character or scene concept, significantly speeding up pre-production workflows.
How to Use Seedream 4.0
Choose your generation mode - either upload up to 3 images for image-to-image transformation or start with a text prompt for text-to-image creation. Supported formats include JPEG, PNG, and WEBP with maximum 10MB file size.
Provide clear instructions - describe what you want to generate or edit using natural language. For precision editing, specify exactly what elements to add, remove, or modify. The AI understands complex contextual prompts.
Review the generated options - Seedream 4.0 typically produces multiple variations based on your prompt. The ultra-fast generation (1.8s for 2K images) allows for quick iteration and refinement.
Make adjustments if needed - use additional natural language prompts to fine-tune the results. The precision editing capabilities allow for multiple rounds of refinement while maintaining image quality.
Export or continue editing - download your final image or use the Seedance integration to transform it into video content. All generated images are ready for commercial use with full rights retained by the creator.