HappyHorse is an AI video creation platform powered by Alibaba ATH’s top-ranking video model. It lets creators generate and edit videos across text-to-video, image-to-video, and video editing workflows in one simple product.

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Hi everyone!

Earlier this April, a mysterious model called HappyHorse suddenly showed up on Arena and jumped straight to the top of the video leaderboards.

Now the reveal is here: it comes from Alibaba ATH, and apparently HappyHorse is not just a codename — it is the actual product name. Honestly, pretty fun.

The model already looks strong across the core video tasks: text-to-video, image-to-video, and video editing. The Arena results are especially notable, with HappyHorse-1.0 reaching top-tier positions in both generation and editing categories.

Now that the official platform is live, it will be interesting to see whether that leaderboard strength translates into real creator workflows!

Happycapy helps happyhorse! Congrats! 🦫