How many reference images can I provide?

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

Which 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 selected resolution—no upscaling involved.

What is batch generation and how does it function?

Batch generation produces 1–6 images in a single API call. All images are rendered simultaneously from the same prompt. Important: Specify the quantity in your prompt. Example: "Generate 4 variations of a modern kitchen design" Use cases: A/B testing, variation exploration, creating image series.

What is the cost for Seedream 4.0 generations?

Credit costs: • Text-to-image: 8 credits per image • Image Edit: 10 credits per image When requesting multiple images in one generation (up to 6), you're charged for each image produced. 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 charged only for what you actually receive.

Can I use the same seed to replicate results?

Yes. Enter a seed value (any integer) to make generations deterministic. Identical prompt + seed + parameters will yield identical results. Use cases: • Iterative refinement with minor prompt adjustments • Reproducing approved outputs • Client presentations with a consistent look

What is knowledge-driven generation?

Seedream 4.0 can produce factual visual content such as: • Charts and graphs from data descriptions • Timelines with labeled historical events • Mathematical diagrams that solve equations • Scientific illustrations with accurate labels The model incorporates a reasoning-aware component that ensures outputs align with factual prompts, not merely aesthetic ones.

Does Seedream 4.0 apply watermarks?

No. Seedream 4.0 outputs are completely watermark-free for all users. You retain 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 employs 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 holistic approach delivers 10× speed improvement over Seedream 3.0 while preserving quality and introducing new capabilities like multi-reference input.

Can I use Seedream 4.0 outputs commercially?

Yes. All Seedream 4.0 outputs are watermark-free and licensed for commercial use. You have full ownership rights for: • 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 designed to avoid copyrighted characters and trademarked content.

Seedream 4.0

Create stunning 4K images without watermarks, leverage up to 10 reference photos, and produce 6 outputs in a single generation. Minimal input constraints give you complete creative freedom—ByteDance's most adaptable AI image engine.

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.

Italy runway model - Seedream V4 AI generated fashion portrait with high-end styling

Features

Seedream 4.0 Core Capabilities

ByteDance Seedream highlights

10× Faster Speed

Produce 2K visuals in just 1.5–2 seconds through an optimized DiT backbone, adversarial distillation, and speculative decoding. Achieves 10× the speed of Seedream 3.0 with no compromise on quality.

4K Native Output

Genuine 1K–4K native rendering powered by a high-compression VAE. Zero upscaling workarounds—every pixel is generated at full resolution from the outset.

Multi-Reference Input

Supply up to 10 reference images to maintain style, character, or product consistency across all outputs. Ideal for brand campaigns and visual series.

Superior Text Rendering

Crisp, readable typography inside images—accurately render copy for packaging, UI mockups, signage, and regulatory reviews. A notoriously difficult problem, now addressed.

Unified Generation + Editing

A single model powers both text-to-image creation and image editing tasks. Shared architecture ensures seamless consistency between originals and edited versions.

Batch Generation

Produce 1–6 images in one request using batch mode. Instantly create variations without issuing multiple API calls.

Watermark-Free Output

Receive production-ready images with absolutely no watermarks. Retain full ownership for marketing assets, products, and professional work—no branding overlays, no usage limits.

Professional Material Rendering

Photorealistic fabric weaves, fur detail, translucent surfaces, and precise reflections. Product imagery quality that rivals a $10,000 studio session.

Guided timeline

NovaVideo × Seedream 4.0 Workflow

Four steps from concept to finished asset

Enter Prompt or Add References

Text descriptions, reference images (up to 10), or a combination

Set Resolution & Batch Size

Select aspect ratio, resolution (1K/2K/4K), and output count

Generate in Seconds

Seedream delivers 2K images in approximately 1.5 seconds

Download or Continue Editing

Save high-resolution outputs or switch to Image Edit mode

Enter Prompt or Add References

Text descriptions, reference images (up to 10), or a combination

Set Resolution & Batch Size

Select aspect ratio, resolution (1K/2K/4K), and output count

Generate in Seconds

Seedream delivers 2K images in approximately 1.5 seconds

Download or Continue Editing

Save high-resolution outputs or switch to Image Edit mode

Real production work

How Teams Apply Seedream 4.0

From online retail to education, Seedream fits seamlessly into any workflow.

E-commerce Product Imaging

Produce lifestyle shots, themed backdrops, and product variants without organizing photo shoots. Preserve product fidelity using reference images.

Seasonal product visuals (holiday,Virtual try-ons: Display apparel/accessoriesContextual placement: Position products

Marketing & Advertising

Build campaign visuals, ad variants, and brand assets at scale. Leverage multi-reference input to maintain brand coherence.

Social media ad variantsHero banners for landingPrint-ready 4K billboard and

Concept Art & Design

Rapid visual prototyping for games, films, and product design. Batch generation speeds up the ideation phase.

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

Educational & Informational

Knowledge-driven generation produces diagrams, charts, and instructional graphics with factual precision.

Scientific illustrations and medicalHistorical timelines with labeledMath/physics problem visualizations

SPOTLIGHT

Why Teams Pick Seedream 4.0

Blazing-Fast Iteration

Produce 2K images in 1.5 seconds. Explore dozens of concepts in minutes instead of hours. Ideal for tight timelines and rapid A/B testing.

Print-Quality 4K Output

Native 4K rendering free of upscaling artifacts. Billboard-ready visuals with sharp details and true-to-life colors for professional print pipelines.

Flexible & Unrestricted Creativity

Output up to 6 images per request with minimal input limitations. Community feedback: 'Mind-blowingly good,' 'Better prompt adherence,' 'Wipes the floor with competitors.' Join the 50%+ of creators who have switched to Seedream 4.0.

COMPARISON

How Seedream 4.0 Stacks Up

Benchmarked against top image AI models Based on third-party evaluations (Artificial Analysis Image Arena, Sep 2025) and internal assessments.

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 shift subject poses during image editing
Face and hand details less precise at medium distances
Pixel-level editing accuracy lower than mask-based tools

Best For

E-commerce, marketing campaigns, rapid iteration, batch pipelines, 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 mask-based editing, 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 excels in speed, resolution, and batch efficiency. Opt for Nano Banana when compliance is critical or Flux for artistic illustration.

FAQ

Frequently Asked Questions

Seedream 4.0 delivers three key breakthroughs:
1. Speed: 10× faster than the previous generation (1.5–2s @ 2K)
2. Multi-reference: Up to 10 input images for consistent results
3. Unified architecture: One model for both generation AND editing

It stands alone in offering native 4K output, batch generation, and knowledge-driven diagram creation within a single package.

Seedream 4.0

Image Requirements:

Prompt(Click to edit)

Image Size / Aspect Ratio

AI Image Generator Result

Seedream 4.0 Core Capabilities

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

Enter Prompt or Add References

Set Resolution & Batch Size

Generate in Seconds

Download or Continue Editing

Enter Prompt or Add References

Set Resolution & Batch Size

Generate in Seconds

Download or Continue Editing

How Teams Apply Seedream 4.0

E-commerce Product Imaging

Marketing & Advertising

Concept Art & Design

Educational & Informational

Why Teams Pick Seedream 4.0

Blazing-Fast Iteration

Print-Quality 4K Output

Flexible & Unrestricted Creativity

How Seedream 4.0 Stacks Up

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 sets Seedream 4.0 apart from other image AI models?

What sets Seedream 4.0 apart from other image AI models?

2How many reference images can I provide?

How many reference images can I provide?

3Which resolutions does Seedream 4.0 support?

Which resolutions does Seedream 4.0 support?

4What is batch generation and how does it function?

What is batch generation and how does it function?

5What is the cost for Seedream 4.0 generations?

What is the cost for Seedream 4.0 generations?

6Can I use the same seed to replicate results?

Can I use the same seed to replicate results?

7What is knowledge-driven generation?

What is knowledge-driven generation?

8Does Seedream 4.0 apply watermarks?

Does Seedream 4.0 apply 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 commercially?

Can I use Seedream 4.0 outputs commercially?