Models
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Seedream 4.0
Create watermark-free 4K imagery, steer results with up to 10 reference shots, and batch up to six renders per request. Flexible inputs mean Seedream stays the most adaptable ByteDance image AI for every workflow.
Image Requirements:
Image Size / Aspect Ratio
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Features
Seedream 4.0 Breakthrough Features
ByteDance Seedream highlights
10× Faster Speed
Produce 2K frames in 1.5–2 seconds with optimized DiT, adversarial distillation, and speculative decoding—roughly ten times quicker than Seedream 3.0 without sacrificing fidelity.
4K Native Output
Render 1K, 2K, or 4K results natively via a high-compression VAE; Seedream never fakes resolution with post-upscaling.
Multi-Reference Input
Upload as many as ten references to lock in style, characters, or product accuracy—ideal for brand work and serialized campaigns.
Superior Text Rendering
Place readable typography directly in the frame—packaging copy, UI mockups, signage, and compliance text all remain sharp and accurate.
Unified Generation + Editing
Seedream runs text-to-image and editing in the same model, so edited variants stay aligned with the original vision.
Batch Generation
Spin up one to six variations per call—no extra API round trips when exploring multiple looks.
Watermark-Free Output
Receive clean, watermark-free assets ready for commercial use—Seedream never stamps your marketing or product shots.
Professional Material Rendering
Seedream renders fabrics, glass, fur, and reflections with photoreal clarity—rivaling pricey studio shoots for product visuals.
Guided timeline
NovaVideo × Seedream 4.0 Workflow
Four quick steps from idea to finished asset
Prompt or Upload References
Enter a prompt, add up to ten references, or mix both
Configure Resolution & Batch
Pick aspect ratio, target resolution (1K/2K/4K), and batch size
Generate at Lightning Speed
Seedream delivers 2K renders in roughly 1.5 seconds
Download or Edit Further
Download high-res results or switch to Image Edit mode
Prompt or Upload References
Enter a prompt, add up to ten references, or mix both
Configure Resolution & Batch
Pick aspect ratio, target resolution (1K/2K/4K), and batch size
Generate at Lightning Speed
Seedream delivers 2K renders in roughly 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
Seedream flexes from e-commerce to classrooms without breaking stride.
E-commerce Product Imaging
Replace costly shoots with Seedream—generate lifestyle scenes, themed backdrops, and variant shots while keeping product details accurate via references.
Marketing & Advertising
Scale campaign imagery, ad variants, and brand assets. Multi-reference inputs keep logos, characters, and palettes consistent.
Concept Art & Design
Game, film, and product teams prototype faster with batch ideation—Seedream keeps characters and environments aligned across series.
Educational & Informational
Seedream’s knowledge-aware engine renders charts, timelines, and technical diagrams that match factual prompts.
SPOTLIGHT
Why Teams Choose Seedream 4.0
Lightning-Fast Iteration
Seedream’s 1.5-second 2K renders let you explore dozens of ideas in minutes, keeping tight A/B schedules on track.
Print-Quality 4K Output
Native 4K means billboard-ready clarity without messy upscale artifacts—Seedream keeps colors and details faithful for print.
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
Benchmarked against leading image AIs Insights from Artificial Analysis Image Arena (Sep 2025) plus in-house testing.
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
1. Speed: Around 1.5–2 seconds for 2K renders (10× faster than Seedream 3.0)
2. Multi-reference: Up to ten inputs lock in style or product accuracy
3. Unified model: The same engine powers generation and editing