Image

doubao-seedance-4-0

Seedream 4.0 API is ByteDance's unified text-to-image and image editing model. Generate 4K images with industry-leading text rendering, batch processing, and multi-reference support.

4K GenerationText RenderingBatch ProcessingReference ImagesImage Editing

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Service Highlights

99.9% SLA
Official Discounts
Pay-as-you-go
Fast & Low Latency

Input

Model

Prompt

143 characters

Size

Resolution

Number of Images

Sequential Generation

Prompt Optimization Mode

Watermark

Reference Image

Output

Image link valid for 72 hours

Pricing Details

Transparent pricing with no hidden fees. Pay only for what you use.

* Actual costs are subject to final output.

Seedream 4.0 API - High-Quality 4K AI Image Generation

APIMart provides fast access to ByteDance Seedream 4.0 API. Generate high-fidelity 4K images with superior text rendering, batch up to 15 outputs, and use 10 reference images for style consistency.

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50K+

Active Users

99.9%

Uptime

Faster

70%

Cost Savings

Why Seedream 4.0 API

Key capabilities for developers and creators

Competitive Pricing

Industry-leading price of 0.2 Credits(~$0.02) per image. No subscription fees, pay only for what you use.

Official Channel Integration

Direct integration with ByteDance official API. Stable service, guaranteed uptime, and official support.

Superior Text Rendering

Industry-leading text accuracy in images. Perfect for posters, signs, labels, and marketing materials.

Batch Generation

Generate 1-15 images per request. Create variations, A/B test designs, or produce at scale.

10 Reference Images

Upload up to 10 references for style fusion. Maintain visual consistency across outputs.

Layout Awareness

Smart grid layouts (2x2, triptych, comics). Preserves whitespace for titles and CTAs.

Unified Edit + Generate

One model for creation and editing. Remove objects, replace elements with simple prompts.

What You Can Build

Common use cases for Seedream 4.0 API

Marketing Visuals

Create posters, ads, and social content with accurate text. Batch generate variants for A/B testing.

Product Images

Generate product shots, packaging mockups, and hero images. Use references for brand consistency.

Educational Content

Create diagrams, charts, and illustrations. Knowledge-driven generation for accurate visuals.

Style Transfer

Transform images into watercolor, cyberpunk, or custom styles using reference images.

Multi-Panel Art

Generate comics, storyboards, and grid layouts. Maintain character consistency across panels.

Image Editing

Edit existing images with text prompts. Replace objects, change backgrounds, add elements.

Start Using Seedream 4.0 API

Generate your first image in minutes

Create Account & Add Balance

Sign up for free APIMart account. No credit card required to start. Top up your account. Pay-per-use pricing at 0.2 Credits(~$0.02) per image.

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Get API Key

Generate your API key from the dashboard for authentication.

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Make Request

POST to /v1/images/generations with your prompt. Receive task_id and poll for results.

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Developer Feedback

What users say about Seedream 4.0 API on APIMart

“Text rendering finally works. We generate event posters with accurate titles and dates - something that always failed with other models.”

Mike Chen

Marketing Developer

“Batch generation changed our workflow. We generate 15 product variations in one call, pick the best, done. Massive time saver.”

Sarah Kim

E-commerce Tech Lead

“Reference image support is a game-changer for brand consistency. Upload brand assets, get on-brand visuals every time.”

James Liu

Creative Agency CTO

“Fast generation speed transformed our content pipeline. We can now produce high-quality visuals at scale without compromising quality.”

Anna Park

Content Platform Engineer

“0.2 Credits(~$0.02) per image with this quality? We migrated from a 2000 Credits(~$200)/month subscription and now spend less while generating more.”

David Wang

Startup Founder

“The unified edit+generate model means one API for everything. Removed 3 other services from our stack.”

Lisa Zhang

Full Stack Developer

Seedream 4.0 API FAQ

Quick answers to common questions

What makes Seedream 4.0 different from other AI image models?

Seedream 4.0 combines generation and editing in one unified architecture. It offers 4K output, superior text rendering, and supports up to 10 reference images - features not found together in competitors.

How fast is image generation?

Image generation is fast and efficient. 2K and 4K images are generated quickly, making it suitable for real-time applications and high-volume workflows.

How do I write effective prompts?

Use structure: Subject + Style + Details. Be specific, use natural language. For text in images, use double quotes like "Your Text Here". Avoid overloading prompts with too many instructions.

How do reference images work?

Upload up to 10 reference images via URLs. Seedream 4.0 extracts style, characters, and elements to maintain consistency. Great for brand assets, character series, and style matching.

What does the API cost?

Through APIMart, Seedream 4.0 API costs 0.2 Credits(~$0.02) per generated image. Batch requests (n=1-15) are billed per image produced. No subscription required - pay only for what you use.

What image resolutions does Seedream 4.0 support?

Seedream 4.0 supports output resolutions up to 4K (4096x4096 max). You can specify custom width and height in your API request, with multiple aspect ratios available for different use cases like social media posts, banners, and print materials.

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Developer Feedback

What users say about Seedream 4.0 API on APIMart

“Text rendering finally works. We generate event posters with accurate titles and dates - something that always failed with other models.”

Mike Chen

Marketing Developer

“Batch generation changed our workflow. We generate 15 product variations in one call, pick the best, done. Massive time saver.”

Sarah Kim

E-commerce Tech Lead

“Reference image support is a game-changer for brand consistency. Upload brand assets, get on-brand visuals every time.”

James Liu

Creative Agency CTO

“Fast generation speed transformed our content pipeline. We can now produce high-quality visuals at scale without compromising quality.”

Anna Park

Content Platform Engineer

“0.2 Credits(~$0.02) per image with this quality? We migrated from a 2000 Credits(~$200)/month subscription and now spend less while generating more.”

David Wang

Startup Founder

“The unified edit+generate model means one API for everything. Removed 3 other services from our stack.”

Lisa Zhang

Full Stack Developer