Seedream 4.0: FAQ

1. What is Seedream 4.0?

Seedream 4.0 (ByteDance) is a specialty image model built for niche, detailed art styles and strong prompt adherence. It shines on looks mainstream models struggle with (retro anime aesthetics, specific art movements, obscure visual styles) and follows long, precise prompts closely. It handles both creating new images and editing existing ones.

2. What resolutions does Seedream 4.0 support?

• 1K (fast)

• 2K (balanced)

• 4K (highest quality)

3. What aspect ratios are available?

A wide range:

• 21:9, 16:9, 3:2, 4:3, 1:1, 3:4, 2:3, 9:16, 9:21

On edits, input dimensions are preserved.

4. Can you use reference images?

Yes:

• Create: up to 5 reference images for style or content guidance.

• Modify: 1 source plus up to 4 references (5 total).

When using two or more, label each image's role in the prompt (style, character, pose, or composition reference). It's well suited to style transfer and image remixing.

5. What is Seedream 4.0 best at?

• Niche and detailed art styles (retro anime like Vampire Hunter D or Hellsing, 80s/90s anime, specific artistic movements).

• Complex, descriptive prompts that must be followed precisely.

• Artistic and creative imagery with fast generation.

Caveat: it can sometimes mix styles inappropriately (for example, blending cartoon and photorealistic in one image), so keep style direction explicit in the prompt.

6. How does it relate to Seedream 5.0 Pro?

Seedream 4.0 is the niche-style specialist, offering up to 4K and 5 references. Seedream 5.0 Pro trades 4K (caps at 2K) for far deeper multi-reference control (up to 10 images), making it the stronger pick for brand, product, and composition-driven work. Choose 4.0 for stylistic and artistic output, 5.0 Pro for reference-heavy commercial work.

At a glance