Seedream 4.0 AI Image Generator
Seedream 4.0 is ByteDance’s versatile image model — text-to-image, image-to-image and editing at 1K, 2K or 4K with up to 15 reference images.
How to use Seedream 4.0
Three simple steps from prompt to finished image.
Write your prompt
Describe the image you want. Seedream 4.0 understands natural language, so plain English works.
Pick ratio & references
Choose an aspect ratio and add reference images if you want Seedream 4.0 to keep a character or style.
Generate & download
Hit generate, let Seedream 4.0 render, then download the result — ready for your project.
Why choose Seedream 4.0
A flexible Doubao Seedream model with 1K to 4K output.
1K to 4K
Seedream 4.0 spans 1K, 2K and 4K, so you can balance speed and sharpness.
15 reference images
Up to 15 reference images keep characters, products and style consistent.
Generate & edit
Text-to-image plus image-to-image editing in one model.
Wide aspect ratios
From 1:1 to 21:9 and 9:21 for any layout.
Free to start
Try the Seedream 4.0 AI image generator online with no signup.
What creators say about Seedream 4.0
Designers, marketers and indie makers using Seedream 4.0 every day.
Seedream 4.0 lets me dial 1K for drafts and 4K for finals in the same tool.
Jin P.
Game Artist
Seedream 4.0 lets me dial 1K for drafts and 4K for finals in the same tool.
Jin P.
Game Artist
Editing with reference images keeps our characters on-model every time.
Tara M.
Content Lead
Editing with reference images keeps our characters on-model every time.
Tara M.
Content Lead
A reliable all-rounder — Seedream 4.0 handles most of my daily image work.
Felix R.
Designer
A reliable all-rounder — Seedream 4.0 handles most of my daily image work.
Felix R.
Designer
Seedream 4.0 FAQ
What is Seedream 4.0?
Seedream 4.0 is ByteDance’s (Doubao) image model supporting text-to-image, image-to-image and editing at 1K, 2K and 4K.
How is Seedream 4.0 different from 4.5?
Seedream 4.0 supports 1K/2K/4K, while Seedream 4.5 focuses on top-tier 2K/4K quality.
How many reference images can I use?
Seedream 4.0 accepts up to 15 reference images.
Is Seedream 4.0 free to try?
You can try the Seedream 4.0 generator online for free; larger batches use credits.