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Seedream 4.0

ByteDanceModel IDseedream-4-0
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Seedream 4.0

ByteDanceModel IDseedream-4-0

Seedream 4.0 is ByteDance's unified image generation and editing model designed for multimodal creative workflows. It supports text-to-image generation, single- and multi-image editing, image composition, knowledge-driven generation, reference consistency, adaptive aspect ratios, and high-resolution image generation up to 4K.

ModeText / Image → Text
Input price$0.03 / request
Output priceUnknown
Context lengthUnknown

Capabilities & limits

Use cases
Not available
Model capabilities
Not available
Model Brand
ByteDance
Input modality
Text / Image
Output modality
Text
Max output
Unknown

Pricing

ProviderBilling typePrice summary
B
ByteDance-Balanced
Per call
Input price$0.03per request
Completion price—
Cache read price—
Cache write price—
B
ByteDance-Custom
Per call
Input price$0.03per request
Completion price—
Cache read price—
Cache write price—

Integration

Code Example

curl http://127.0.0.1:4179/v1/images/generations \
  -H "Authorization: Bearer <YOUR_API_KEY>" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "seedream-4-0",
    "prompt": "Describe the image you want"
  }'

Replace <YOUR_API_KEY> with the API key generated on your token management page.

Authentication

All requests must include the Authorization: Bearer <TOKEN> header.

Endpoint Path

POST
images

Supported Parameters

ParameterTypeDefaultDescription
string-Specifies the output image size or resolution. Seedream 4.0 supports high-resolution image generation up to 4K.
stringdisabledControls whether to generate a single image or a related image set. Set to disabled for single-image generation or auto for image-set generation.
array-Reference images used for image generation, editing, composition, or multi-image fusion.
stringfalseWhether to add a watermark to the generated image.

Rate Limits

RPM

No rate limits configured

RPM = requests per minute.