Model API

Happy Horse 1.1

Happy Horse 1.1 is Alibaba's #1-ranked video model. This reference-to-video endpoint turns up to 9 reference images into 1080p video with synchronized native audio and multilingual lip-sync for consistent characters.

Model id

Use this in every request

alibaba/happy-horse/v1.1/reference-to-video

This model has other modes with their own ids: alibaba/happy-horse/v1.1/text-to-video, alibaba/happy-horse/v1.1/image-to-video.

Run it

Quote the input, start the generation with the quote, then poll the job. Set RAYWAKE_API_KEY first; see Authentication.

# 1. Price the exact input (quotes are valid for up to 10 minutes)
curl -s https://api.raywake.com/v1/quotes \
  -H "Authorization: Bearer $RAYWAKE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "alibaba/happy-horse/v1.1/reference-to-video",
  "input": {
    "prompt": "A red ceramic cup on a wooden table, soft morning light",
    "image_urls": [
      "https://example.com/input.png"
    ]
  }
}'

# 2. Start the generation with the quote_id from step 1
curl -s https://api.raywake.com/v1/generate \
  -H "Authorization: Bearer $RAYWAKE_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{"model": "alibaba/happy-horse/v1.1/reference-to-video", "quote_id": "QUOTE_ID", "input": {"prompt":"A red ceramic cup on a wooden table, soft morning light","image_urls":["https://example.com/input.png"]}}'

# 3. Poll until the status is terminal
curl -s https://api.raywake.com/v1/jobs/JOB_ID \
  -H "Authorization: Bearer $RAYWAKE_API_KEY"

Input

Input fields for alibaba/happy-horse/v1.1/reference-to-video
Name	Type	Description
`prompt`required	string	Text prompt describing the desired video. Reference subjects from your images using ``character1``, ``character2``, ... up to ``character9`` (the order matches the order of ``image_urls``). Max 2500 characters.
`image_urls`required	array of image URLs	Reference images for subject consistency (1-9 images). Formats: JPEG, JPG, PNG, WEBP. Shortest side must be at least 400 px (720P or higher recommended). Max 20 MB each.
`aspect_ratio`	string (enum)	Aspect ratio of the generated video. Default: `16:9` One of: `16:9`, `9:16`, `1:1`, `4:3`, `3:4`, `21:9`, `9:21`, `5:4`, `4:5`
`resolution`	string (enum)	Output video resolution tier. Default: `1080p` One of: `720p`, `1080p`
`duration`	number (enum)	Output video duration in seconds (3-15). Default: `5` One of: `3`, `4`, `5`, `6`, `7`, `8`, `9`, `10`, `11`, `12`, `13`, `14`, `15`
`seed`	integer	Random seed for reproducibility (0-2147483647).

Output

A succeeded job lists its results under outputs, stored on our side. See Jobs for every field.

Job excerpt

"outputs": [
  { "type": "video", "url": "https://…", "mime_type": "video/mp4", "thumbnail_url": "https://…" }
]

Pricing

720p$0.23/ second
1080p$0.29/ second

The exact charge for your input comes from a quote. How charges settle