ByteDanceMediumUltra

Seedance 1 Pro

A pro version of Seedance that offers text-to-video and image-to-video support for 2-12 second videos, at 480p, 720p, and 1080p resolution.

700 credits

per 5s 1080p video — billed per second (480p 28/s, 720p 56/s, 1080p 140/s; defaults to 1080p)

Higher fidelity than Seedance 1 Lite, up to full 1080p output

Text-to-video and image-to-video generation in one model

2-12 second duration range with per-second billing

Fixed-camera mode and last-frame conditioning

Defaults to 1080p output for maximum quality

Run it right now

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

Use with AI Assistant

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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/seedance-1-pro",
  "input": {
    "prompt": "The sun rises slowly between tall buildings. [Ground-level follow shot] Bicycle tires roll over a dew-covered street at dawn. The cyclist passes through dappled light under a bridge as the entire city gradually wakes up.",
    "duration": 5,
    "resolution": "1080p",
    "aspect_ratio": "16:9"
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	-	Text prompt for video generation
`fps`	integer	No	24	Frame rate (frames per second) 24
`seed`	integer	No	-	Random seed for reproducible generation
`image`	string	No	-	Input image for image-to-video generation
`duration`	integer	No	5	Video duration in seconds (2-12). Billed per second of output
`resolution`	string	No	1080p	Video resolution. Defaults to the highest tier (1080p) 480p720p1080p
`aspect_ratio`	string	No	16:9	Video aspect ratio. Ignored if an image is used 16:94:31:13:49:1621:99:21
`camera_fixed`	boolean	No	false	Whether to fix camera position
`last_frame_image`	string	No	-	Last frame image (requires a first frame image)

How to Provide File Input

There are 3 ways to provide files for the imagelast_frame_image parameters:

Recommended

Direct Upload (Multipart)

Attach files directly to POST /v1/predictions/upload. No separate upload step needed.

curl -X POST "https://api.core.today/v1/predictions/upload" \
  -H "X-API-Key: cdt_your_api_key" \
  -F "model=bytedance/seedance-1-pro" \
  -F 'input={"prompt":"your prompt here"}' \
  -F "file:image=@your_file.png"

Image URL

Pass a publicly accessible URL directly. You can also use file_url from the Storage API.

{
  "model": "bytedance/seedance-1-pro",
  "input": {
    "prompt": "your prompt here",
    "image": "https://example.com/image.jpg"
  }
}

See the File Upload docs for more upload methods including Presigned URLs.

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

Cinematic 1080p Shot (Default)

Text-to-video at the default 1080p resolution for maximum fidelity

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/seedance-1-pro",
  "input": {
    "prompt": "The sun rises slowly between tall buildings. [Ground-level follow shot] Bicycle tires roll over a dew-covered street at dawn. The cyclist passes through dappled light under a bridge as the entire city gradually wakes up.",
    "duration": 5,
    "resolution": "1080p",
    "aspect_ratio": "16:9"
  }
}'

720p Preview

A cheaper 720p pass useful for iterating on prompts before the final 1080p render

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/seedance-1-pro",
  "input": {
    "prompt": "A chef plating a dessert in slow motion in a modern restaurant kitchen",
    "duration": 5,
    "resolution": "720p",
    "aspect_ratio": "16:9"
  }
}'