APIMart.aiAPIMart
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 Generation
Text Rendering
Batch Processing
Reference Images
Image Editing
Pricing: $0.02 / Per Image
Input

Click to upload image

JPEG, PNG, or WebP (max 10MB each, up to 10 images)

Output

No image generated yet

Your generated image will appear here

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.

Get API Key

50K+

Active Users

99.9%

Uptime

2x

Faster

70%

Cost Savings

Why Seedream 4.0 API

Key capabilities for developers and creators

Competitive Pricing

Industry-leading price of $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

1

Create Account

Sign up for free APIMart account. No credit card required to start.

2

Add Balance

Top up your account. Pay-per-use pricing at $0.02 per image.

3

Get API Key

Generate your API key from the dashboard for authentication.

4

Make Request

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

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

"$0.02 per image with this quality? We migrated from a $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

"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

"$0.02 per image with this quality? We migrated from a $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 $0.02 per generated image. Batch requests (n=1-15) are billed per image produced. No subscription required - pay only for what you use.