How many reference images can I use?

Text-to-image mode: Up to 10 reference images Image Edit mode: Up to 10 reference images Reference images guide style, character consistency, or product accuracy. The AI combines elements from all references into the output.

What resolutions does Seedream 4.0 support?

Native resolutions: • 1K (~1024px) • 2K (~2048px) • 4K (~4096px) Final dimensions = aspect ratio × resolution scale. Example: Landscape 16:9 + 4K = 7168 × 4032px All outputs are rendered natively at the chosen resolution—no upscaling.

What is batch generation and how does it work?

Batch generation creates 1-6 images in a single API call. All images are generated simultaneously from the same prompt. Important: You must specify the number in your prompt. Example: "Generate 4 variations of a modern kitchen design" Use cases: A/B testing, exploring variations, creating image series.

How much do Seedream 4.0 generations cost?

Credit costs: • Text-to-image: 8 credits per image • Image Edit: 10 credits per image If you request multiple images in one generation (up to 6), you'll be charged for each image generated. For example: • 1 image = 8 credits • 3 images = 24 credits (3 × 8) • 6 images = 48 credits (6 × 8) You only pay for images successfully generated—if the API returns fewer images than requested, you're only charged for what you receive.

Can I use the same seed to reproduce results?

Yes. Enter a seed value (any integer) to make generations deterministic. Using the same prompt + seed + parameters will produce identical results. Use cases: • Iterative refinement with small prompt tweaks • Reproducing approved outputs • Client presentations with consistent look

What is knowledge-driven generation?

Seedream 4.0 can create factual visual content like: • Charts and graphs from data descriptions • Timelines with labeled historical events • Mathematical diagrams solving equations • Scientific illustrations with accurate labels The model has a reasoning-aware component that ensures outputs match factual prompts, not just aesthetic ones.

Does Seedream 4.0 add watermarks?

No. Seedream 4.0 outputs are watermark-free for all users. You own the commercial rights to use generated images in your projects, marketing materials, and products (subject to our Terms of Service).

How was Seedream 4.0 trained to achieve 10× speed improvement?

Seedream 4.0 uses a multi-phase training strategy: 1. Pre-training: Billions of image-text pairs across 100+ domains 2. Vision-Language Model (VLM): Fine-tuned for unified generation + editing 3. Reinforcement Learning from Human Feedback (RLHF): Aligned with user preferences for quality and aesthetics 4. Acceleration techniques: Adversarial distillation, quantization, and speculative decoding This comprehensive approach delivers 10× speed improvement over Seedream 3.0 while maintaining quality and adding new capabilities like multi-reference input.

Can I use Seedream 4.0 outputs for commercial purposes?

Yes. All Seedream 4.0 outputs are watermark-free and licensed for commercial use. You have full ownership rights to: • Marketing materials and advertising campaigns • Product packaging and branded assets • E-commerce product photography • Client deliverables and presentations • Print and digital publications Subject to our Terms of Service. The model is trained to avoid copyrighted characters and trademarked content.

Seedream 4.0

Generate watermark-free 4K visuals with up to 10 reference images and batch output 6 images in one request. Flexible input requirements let you unleash your creativity—ByteDance's most versatile image AI.

Generate images from text descriptions only

Image Requirements:

Describe what you want to generate or edit

0/5000

Image Size / Aspect Ratio

ResolutionNative 1K output

Batch Generation1 image

123456

AI Image Generator Result

image generation takes 1–3 min. Please don't close this tab.

Ascension of the Heroic Gods - Seedream V4 AI generated image showcasing epic fantasy artwork

Features

Seedream 4.0 Breakthrough Features

ByteDance Seedream highlights

10× Faster Speed

Generate 2K images in 1.5-2 seconds thanks to optimized DiT architecture, adversarial distillation, and speculative decoding. 10× faster than Seedream 3.0 while maintaining quality.

4K Native Output

True 1K-4K native generation with high-compression VAE. No upscaling tricks—every detail is rendered at full resolution from the start.

Multi-Reference Input

Upload up to 10 reference images to guide style, character, or product consistency across outputs. Perfect for brand campaigns and series.

Superior Text Rendering

Legible typography within images—spell exact copy for packaging, UI mockups, signage, and compliance reviews. A traditionally hard problem, now solved.

Unified Generation + Editing

One model handles both text-to-image and editing tasks. Better consistency between original and edited variants thanks to shared architecture.

Batch Generation

Generate 1-6 images in a single request with batch mode. Create variations instantly without multiple API calls.

Watermark-Free Output

Commercial-ready images with zero watermarks. Full ownership rights for your marketing materials, products, and professional projects—no branding, no restrictions.

Professional Material Rendering

Photorealistic fabric textures, fur details, translucent materials, and accurate reflections. Product photography quality that rivals $10,000 studio shoots.

Guided timeline

NovaVideo × Seedream 4.0 Workflow

Four steps from prompt to polished deliverable

Prompt or Upload References

Text prompts, reference images (up to 10), or both

Configure Resolution & Batch

Choose aspect ratio, resolution (1K/2K/4K), batch size

Generate at Lightning Speed

Seedream generates 2K images in ~1.5 seconds

Download or Edit Further

Download high-res results or switch to Image Edit mode

Prompt or Upload References

Text prompts, reference images (up to 10), or both

Configure Resolution & Batch

Choose aspect ratio, resolution (1K/2K/4K), batch size

Generate at Lightning Speed

Seedream generates 2K images in ~1.5 seconds

Download or Edit Further

Download high-res results or switch to Image Edit mode

Real production work

Where Teams Use Seedream 4.0

From e-commerce to education, Seedream adapts to every workflow.

E-commerce Product Imaging

Generate lifestyle shots, themed backgrounds, and product variations without photo shoots. Maintain product accuracy with reference images.

Seasonal product photography (holiday,Virtual try-ons: Show clothing/accessoriesProduct-in-context: Place items in

Marketing & Advertising

Create campaign visuals, ad variations, and brand assets at scale. Use multi-reference input to enforce brand consistency.

Social media ad variationsHero images for landingPrint-ready 4K billboard and

Concept Art & Design

Rapid prototyping for games, films, and product design. Batch generation accelerates ideation.

Environment and character conceptStoryboard frames with consistentUI/UX mockups with in-image

Educational & Informational

Knowledge-driven generation creates diagrams, charts, and instructional visuals with factual accuracy.

Scientific illustrations and medicalHistorical timelines with labeledMath/physics problem visualizations

SPOTLIGHT

Why Teams Choose Seedream 4.0

Lightning-Fast Iteration

Generate 2K images in 1.5 seconds. Test dozens of concepts in minutes, not hours. Perfect for tight deadlines and rapid A/B testing.

Print-Quality 4K Output

Native 4K generation without upscaling artifacts. Billboard-ready visuals with crisp details and accurate colors for professional print workflows.

Flexible & Creative Freedom

Generate up to 6 images in one request with minimal input restrictions. Community praises: 'Mind-blowingly good,' 'Better prompt adherence,' 'Wipes the floor with competitors.' Join 50%+ of creators who switched to Seedream 4.0.

COMPARISON

How Seedream 4.0 Compares

Benchmark against leading image AI models Based on third-party benchmarks (Artificial Analysis Image Arena, Sep 2025) and internal testing.

Recommended

Seedream 4.0

Strengths

10× faster generation speed
Up to 10 reference images
Native 4K output (no upscaling)
Unified gen + edit model
Superior text rendering
Batch generation (1-6 images)
No watermarks

Limitations

May slightly alter subject poses during image editing
Face and hand details less accurate at medium distances
Pixel-level editing precision lower than mask-based tools

Best For

E-commerce, marketing campaigns, fast iteration, batch workflows, print-quality 4K assets

Nano Banana 2 (GemPix2)

Strengths

Excellent prompt adherence
Pixel-perfect editing with advanced masking
2K→4K upscale quality
Brand Guard compliance & safety filters
Style Memory for consistency

Limitations

Single reference image only
Slower generation (~60-90s)
No batch generation
Watermarked outputs (some plans)

Best For

Regulated industries, precise editing with masks, campaigns requiring compliance review

Flux Pro

Strengths

Artistic quality
Strong style control
Good for illustration

Limitations

Slower than Seedream
Limited editing capabilities
Lower resolution options

Best For

Digital art, illustration, creative exploration

Seedream 4.0 leads in speed, resolution, and batch efficiency. Choose Nano Banana for compliance-heavy workflows or Flux for artistic illustration.

FAQ

Frequently Asked Questions

Seedream 4.0 combines three breakthroughs:
1. Speed: 10× faster than previous generation (1.5-2s @ 2K)
2. Multi-reference: Up to 10 input images for consistency
3. Unified architecture: Same model for generation AND editing

It's the only model offering native 4K output, batch generation, and knowledge-driven diagram creation in one package.

Seedream 4.0

Image Requirements:

Prompt(Click to edit)

Image Size / Aspect Ratio

AI Image Generator Result

Seedream 4.0 Breakthrough Features

10× Faster Speed

4K Native Output

Multi-Reference Input

Superior Text Rendering

Unified Generation + Editing

Batch Generation

Watermark-Free Output

Professional Material Rendering

NovaVideo × Seedream 4.0 Workflow

Prompt or Upload References

Configure Resolution & Batch

Generate at Lightning Speed

Download or Edit Further

Prompt or Upload References

Configure Resolution & Batch

Generate at Lightning Speed

Download or Edit Further

Where Teams Use Seedream 4.0

E-commerce Product Imaging

Marketing & Advertising

Concept Art & Design

Educational & Informational

Why Teams Choose Seedream 4.0

Lightning-Fast Iteration

Print-Quality 4K Output

Flexible & Creative Freedom

How Seedream 4.0 Compares

Seedream 4.0

Strengths

Limitations

Best For

Nano Banana 2 (GemPix2)

Strengths

Limitations

Best For

Flux Pro

Strengths

Limitations

Best For

Frequently Asked Questions

1What makes Seedream 4.0 different from other image AI models?

What makes Seedream 4.0 different from other image AI models?

2How many reference images can I use?

How many reference images can I use?

3What resolutions does Seedream 4.0 support?

What resolutions does Seedream 4.0 support?

4What is batch generation and how does it work?

What is batch generation and how does it work?

5How much do Seedream 4.0 generations cost?

How much do Seedream 4.0 generations cost?

6Can I use the same seed to reproduce results?

Can I use the same seed to reproduce results?

7What is knowledge-driven generation?

What is knowledge-driven generation?

8Does Seedream 4.0 add watermarks?

Does Seedream 4.0 add watermarks?

9How was Seedream 4.0 trained to achieve 10× speed improvement?

How was Seedream 4.0 trained to achieve 10× speed improvement?

10Can I use Seedream 4.0 outputs for commercial purposes?

Can I use Seedream 4.0 outputs for commercial purposes?