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Alibaba · Video model

HappyHorse 1.1

alibaba/happyhorse-1.1
  • Video
Released Jun 24, 2026

HappyHorse 1.1 is a video generation model from Alibaba. It generates short videos from a text prompt, a single starting image, or a set of reference images, with output up...

Specifications

Durations
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 s
Resolutions
720p, 1080p
Aspect ratios
16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21
Sizes
1280x720, 720x1280, 720x720, 960x720, 720x960, 1680x720, 720x1680, 1920x1080, 1080x1920, 1080x1080, 1440x1080, 1080x1440, 2520x1080, 1080x2520
Start from an image
first frame
Edit a video
no
Audio
none
Seed
supported

Use it

POST /api/v1/videos · MCP generate_video · get_video · full reference

# 1. submit (202 with id, token, poll_url)
curl https://omnirail.org/api/v1/videos \
  -H "Authorization: Bearer $OMNIRAIL_KEY" -H "Content-Type: application/json" \
  -d '{"model":"alibaba/happyhorse-1.1","prompt":"a paper boat drifting down a rainy street, slow dolly in","duration":3,"resolution":"720p","aspect_ratio":"16:9"}'

# 2. poll every ~30 s until status is "completed"
curl https://omnirail.org/api/v1/videos/$JOB_ID -H "Authorization: Bearer $OMNIRAIL_KEY"