SeeDream 4.0 API

Text to Image

ByteDance AI image generation with up to 8 reference images support.

·Features·FAQ

Documentation

Prompt *

Text description of the image to generate

Reference Images

Reference image URLs (up to 6)

0/6

Click or drag & dropPNG, JPG, WEBP, GIF · Max 100MB

Resolution

Aspect Ratio

Seed

Seed for reproducibility

Output

Your generated image will appear here

Features

What SeeDream 4.0 API offers

Text-to-image plus up to six reference images for guided looks

Resolution output at 1K, 2K, or 4K

Eight aspect ratios including 21:9 ultra-wide

Optional seed

REST API with JSON responses

Use cases

Built for

Primary

Campaign visuals: print-safe 4K masters and web crops from the same prompt

Product pages: square and landscape ratios from one setup

Mood boards: steer with several references under the six image cap

Drafts vs finals: start at 1K for speed, rerun at 4K for delivery

FAQ

About SeeDream 4.0 API

SeeDream 4.0 is ByteDance image generation with a prompt, optional reference images (up to six), selectable resolution and aspect ratio, and optional seed.

You can attach up to six reference images when you need image-guided output.

1K, 2K (default in the playground selector), and 4K.

1:1, 3:4, 4:3, 9:16, 16:9, 2:3, 3:2, and 21:9.