happyhorse/HappyHorse-1.0
HappyHorse-1.0 is an emerging AI video model developed by Alibaba ATH and has quickly become one of the most watched new names in AI video generation. It is associated with strong text-to-video and image-to-video performance, along with audio support and multilingual capability.

Try the model with a sample request using the same API shape shown in the reference page.
First-frame image URL list. Exactly one image is required. Minimum resolution: width and height ≥ 300px. Aspect ratio: 1:2.5 to 2.5:1.
Output duration in seconds (integer). Must be between 3 and 15. Defaults to 5.
Output video resolution. Valid values: 720P, 1080P (default).
Text prompt describing the image
Range: [0, 2147483647]. If not specified, the system generates a seed automatically. Fixing the seed can improve reproducibility, but results may still vary due to the model’s stochasticity.
Adjust settings and run the demo to see the model output generated here in real-time.