AlibabaSlowHigh

Wan 3.0 Prime

Alibaba's Wan 3.0 Prime generates video from a text prompt (or an optional starting image) with coherent motion and lighting, at 480p, 720p or 1080p and 2 to 30 seconds long.

3050 credits

per 5s 1080p video — billed per second (480p 158/s, 720p 326/s, 1080p 651/s)

Premium tier of Wan 3.0 focused on coherent motion and lighting

Long clips — 2 to 30 seconds in a single generation

Three resolutions: 480p, 720p, 1080p

Adaptive aspect ratio or one of five fixed ratios

Negative prompts, automatic prompt expansion and seed control

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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": "alibaba/wan-3-prime",
  "input": {
    "prompt": "a man doing jumping jacks",
    "duration": 5,
    "resolution": "1080p",
    "aspect_ratio": "adaptive",
    "negative_prompt": "",
    "enable_prompt_expansion": true
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`prompt`	string	Yes	-	Text prompt for video generation (up to 20,000 characters). Include scene, lighting, camera movement and action
`image`	string	No	-	Optional first-frame image to animate (jpg/png/bmp/webp, ≤10MB). When provided, the video is generated from this image guided by the prompt
`resolution`	string	No	1080p	Output resolution. 480p bills 158 credits/sec, 720p 326/sec, 1080p 651/sec 480p720p1080p
`aspect_ratio`	string	No	adaptive	'adaptive' lets the model choose the best ratio for the prompt. Ignored when an image is provided (the image's ratio is used) adaptive16:99:161:14:33:4
`duration`	integer	No	5	Video duration in seconds (2-30). Billed per second of output
`negative_prompt`	string	No	-	Content that should not appear in the video
`enable_prompt_expansion`	boolean	No	true	Automatically expand and optimize the prompt. Improves quality for short prompts but increases latency
`seed`	integer	No	-	Random seed for reproducible generation (0-2147483647)

How to Provide File Input

There are 3 ways to provide files for the image parameter:

Recommended

Image URL

Pass a publicly accessible URL directly. With the Storage API (POST /v1/files/upload-url) the file uploads straight to S3 (50MB per file) and you pass the returned file_url.

{
  "model": "alibaba/wan-3-prime",
  "input": {
    "prompt": "your prompt here",
    "image": "https://example.com/image.jpg"
  }
}

Direct Upload (Multipart)

Attach files directly to POST /v1/predictions/upload. No separate upload step, but the bytes pass through the API server so the whole request is capped at 10MB.

curl -X POST "https://api.core.today/v1/predictions/upload" \
  -H "X-API-Key: cdt_your_api_key" \
  -F "model=alibaba/wan-3-prime" \
  -F 'input={"prompt":"your prompt here"}' \
  -F "file:image=@your_file.png"

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

Text-to-Video (1080p)

A 5-second 1080p clip from a short prompt

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "alibaba/wan-3-prime",
  "input": {
    "prompt": "a man doing jumping jacks",
    "duration": 5,
    "resolution": "1080p",
    "aspect_ratio": "adaptive",
    "negative_prompt": "",
    "enable_prompt_expansion": true
  }
}'

Low-Cost 480p Draft

Check motion and framing at 480p before the final 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": "alibaba/wan-3-prime",
  "input": {
    "prompt": "A golden retriever running through autumn leaves in a park, camera tracking from the side, warm afternoon light",
    "negative_prompt": "blurry, distorted, low quality, static",
    "duration": 8,
    "resolution": "480p",
    "aspect_ratio": "16:9"
  }
}'