Happyhorse (https://www.happyhorse.com) is Alibaba’s latest video generation model.

Generation by text instruction and/or reference image (up to 9).
High fidelity to references, realism and text management.
The videos are automatically sounded.
5 formats available and duration up to 15 seconds.

Editing by proposed suggested.

In beta, 50 free credits per day + 16 at the opening (1 video of 5 seconds = 2 to 40 credits).

Image source: https://commons.wikimedia.org/w/index.php?curid=12690964