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Professional AI Image Generation & Editing

Seedream 4.5

ByteDance's next-generation image creation model with industry-leading text rendering, multi-image editing, and 4K quality output. Unified architecture integrating generation and editing capabilities.

What's New in Seedream 4.5

All-round improvement through overall model scaling with significant enhancements in core dimensions.

Enhanced Text Rendering

Dramatically improved text rendering system with accurate spelling, multi-line layouts, and various font styles. Clear and readable small text rendering ideal for posters and brand visuals.

Reference Image Consistency

Preserves reference image's facial features, lighting, color tone, and other details. Delivers professional editing capabilities with high-fidelity up to 4K resolution.

Multi-Image Editing

Accurately identifies target elements across multiple input images, enabling controllable and consistent multi-image generation. Perfect for series content creation.

Improved Quality & Speed

30-40% faster generation speed compared to v4.0. Significant improvements in prompt adherence, alignment, and aesthetics across all core dimensions.

Model Overview

Seedream 4.5 is ByteDance's latest AI image generation model, ranking #10 on the LM Arena leaderboard with an impressive score of 1147. This new-generation image creation model integrates image generation and image editing capabilities into a single, unified architecture, achieving an all-round improvement through overall model scaling.

The model particularly excels at text rendering and typography—areas where many AI models struggle. Seedream 4.5 can accurately identify the main subjects in multi-image editing, strictly preserve the details of reference images, and provide designer-level composition and typography capabilities, making it an ideal choice for professional visual creatives with high consistency and fidelity.

Compared to Seedream 4.0, version 4.5 shows significant improvements across core dimensions including prompt adherence, alignment, and aesthetics in the MagicBench benchmark, while delivering 30-40% faster generation speed. The model supports up to 2048x2048 (4K quality) output, suitable for print materials and professional publications.

Key Features

Professional-grade capabilities for high-quality image generation and editing.

Professional Text & Typography

Industry-leading text rendering with accurate spelling and grammar. Supports multi-line layouts with consistent formatting, various font styles (serif, sans-serif, script, decorative), and natural text integration in complex scenes.

Clear and readable small text rendering

Reference-Accurate Editing

Preserves reference image's facial features, lighting, and color tone with strict detail retention. High-fidelity image editing up to 4K resolution, perfect for product photos, model showcases, and packaging visuals.

Professional editing capabilities

Multi-Image Combination

Accurately identifies and locks the main subject across multiple input images. Enables controllable and consistent multi-image generation, ideal for series content creation and brand content series.

Powerful multi-image combination ability

4K High-Resolution Output

Maximum resolution of 2048x2048 (4K quality) suitable for print materials and professional publications. Crisp details that scale well across devices with multiple aspect ratios: square, portrait, landscape, and custom.

Detail preservation and dynamic range

Designer-Level Composition

Professional composition and typography with balanced layouts and visual hierarchy. Poster layout and logo design capabilities, ideal for brand visuals and creative scenarios with professional color reproduction.

Perfect for posters and brand visuals

Advanced Style Control

More precise style transfer capabilities with better consistency across multi-image generations. Improved prompt adherence and enhanced creative interpretation while maintaining accuracy. Negative prompt support.

Reliable results across multiple generations

Technical Specifications

Comprehensive technical details of Seedream 4.5's capabilities and performance metrics.

Output Specifications

Max Resolution 2048x2048
Quality 4K
Aspect Ratios Multiple
File Format Standard

Generation Modes

Text-to-Image
Image Editing
Multi-Image
Reference-Based

Performance Metrics

LM Arena Rank #10
Score 1147
Speed vs 4.0 +30-40%
Specialty Text

Supported Resolutions & Aspect Ratios

Aspect Ratio Resolutions Best For
Square (1:1) 1024x1024, 1536x1536, 2048x2048 Social media, profile images
Portrait 1024x1536, 1024x2048 Mobile screens, stories
Landscape 1536x1024, 2048x1024 Web headers, banners
Custom Various intermediate sizes Specific use cases

Use Cases

Seedream 4.5 empowers professionals across diverse creative and commercial scenarios.

Marketing & Advertising

Brand visuals and logo design, advertising creatives and campaign visuals, social media content, product promotional materials, poster and banner design with clear text rendering.

Design & Creative

Poster layout and typography, packaging design, UI/UX interface design, brand identity development, visual concept design with designer-level composition and professional color reproduction.

E-commerce

Product photos and showcases, model display images, packaging visuals, product mockups and presentations, store decoration materials with high-fidelity reference-based editing.

Content Creation

Editorial illustrations, educational materials and infographics, presentations and slides, digital art creation, book cover design with accurate text rendering and professional quality.

Brand Identity

Logo and mark design, brand guideline visuals, corporate promotional materials, business cards and stationery design, brand consistency series with multi-image combination ability.

Editorial Illustration

Magazine and publication illustrations, news accompanying images, blog and article illustrations, reports and whitepapers visuals, professional publications with 4K print quality.

Model Limitations

Understanding current limitations helps you get the best results from Seedream 4.5.

Text Complexity Limits

Very long paragraphs may have inconsistencies, and extremely complex layouts might require multiple iterations. Break complex text into simpler elements and generate multiple versions to select the best result.

Small Text Clarity

Very small text sizes may lose clarity. For best results, use medium or large text sizes. If small text is necessary, consider using higher resolutions and clear font styles.

Mixed Language Challenges

Mixed language text can be challenging. It's recommended to generate separately or use a primary language for best results. Consider creating multiple versions for different language audiences.

Iteration Requirements

Some complex scenes may require multiple generations and prompt optimization to achieve ideal results. Use detailed prompts with clear style descriptions to improve first-generation quality and reduce iteration needs.

Frequently Asked Questions

Common questions about Seedream 4.5 and how to get started.

What is the maximum resolution of Seedream 4.5?

Seedream 4.5 supports up to 2048x2048 pixels output, providing 4K quality images suitable for print and professional applications. It supports multiple aspect ratios including square, portrait, landscape, and custom sizes.

How accurate is the text rendering feature?

Seedream 4.5 has industry-leading text rendering capabilities. Unlike models that generate gibberish text, it can produce accurately spelled, consistently formatted text. It supports various font styles including serif, sans-serif, script, and decorative fonts. Text is naturally integrated into scenes, suitable for signs, posters, packaging, and more.

What is the "multi-image editing" feature?

The multi-image editing feature allows you to input multiple images, and Seedream 4.5 will accurately identify and lock the main subject, then generate controllable and consistent combined images. This is very useful for series content creation that requires visual coherence, such as brand content series and product series showcases.

What improvements does Seedream 4.5 have over 4.0?

Seedream 4.5 has significant improvements in multiple areas: 30-40% faster generation speed, significantly better text rendering, enhanced editing precision, better prompt adherence, and improved aesthetic quality. In the MagicBench benchmark, version 4.5 surpasses 4.0 in core dimensions including prompt adherence, alignment, and aesthetics.

How to get the best text generation results?

For best text rendering results: 1) Be specific about the exact text you want and enclose it in quotes; 2) Describe where and how the text should appear (e.g., "wooden sign", "neon text"); 3) Specify font characteristics (e.g., "bold sans-serif", "elegant script font"); 4) For complex layouts, break text into simpler elements.

What scenarios is Seedream 4.5 suitable for?

Seedream 4.5 is ideal for scenarios requiring professional-grade image quality and text rendering, including: marketing and advertising creatives, brand visuals and logo design, e-commerce product showcases, social media content, poster and packaging design, UI/UX interface design, editorial illustrations, and educational materials. Its 4K quality output makes it particularly suitable for print materials and professional publications.

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