ByteDanceMediumHigh

Seedream 4.0

ByteDance's latest image generation model with exceptional prompt understanding and creative capabilities.

70 credits

per image (auto mode bills up to max_images)

Advanced language understanding

Creative composition

Excellent text rendering

Multiple style support

High resolution output

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedream-4",
  "input": {
    "prompt": "Modern coffee shop interior with text 'OPEN NOW' in neon sign style, cozy atmosphere, Instagram aesthetic",
    "size": "1024x1024"
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	-	Text description of the image
`image_input`	array	No	[]	Input image(s) for image-to-image generation. List of 1-10 images for single or multi-reference generation.
`size`	string	No	2K	Output dimensions 1K2K4Kcustom
`aspect_ratio`	string	No	match_input_image	Image aspect ratio. Only used when size is not 'custom'. Use 'match_input_image' to automatically match the input image's aspect ratio. match_input_image1:14:33:416:99:163:22:321:9
`width`	integer	No	2048	Custom image width (only used when size='custom'). Range: 1024-4096 pixels.
`height`	integer	No	2048	Custom image height (only used when size='custom'). Range: 1024-4096 pixels.
`sequential_image_generation`	string	No	disabled	Group image generation mode. 'disabled' generates a single image. 'auto' lets the model decide whether to generate multiple related images (e.g., story scenes, character variations). disabledauto
`max_images`	integer	No	1	Maximum number of images to generate when sequential_image_generation='auto'. Range: 1-15. Total images (input + generated) cannot exceed 15.
`enhance_prompt`	boolean	No	true	Enable prompt enhancement for higher quality results, this will take longer to generate.

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Social Media Post

Create engaging social content

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "bytedance/seedream-4",
  "input": {
    "prompt": "Modern coffee shop interior with text 'OPEN NOW' in neon sign style, cozy atmosphere, Instagram aesthetic",
    "size": "1024x1024"
  }
}'