PANews reported on April 10th that, according to The Paper, Alibaba's ATH (AI Technology and Innovation Center) told the media on April 10th, "HappyHorse is a model developed by Alibaba ATH's Innovation Business Unit. It is currently in internal testing and will soon have its API open. The ATH Innovation Business Unit has launched a plan to explore new interaction methods in the AI ​​era, and HappyHorse is part of this exploration. We will launch more products in succession." It is understood that HappyHorse's API access will be available on April 30th.

Recently, on the Video Arena ranking list of artificial intelligence video models released by the third-party AI model evaluation platform Artificial Analysis, a model submitted by an anonymous team and named HappyHorse-1.0 "suddenly" topped the list, surpassing well-known products such as Seedance 2.0 from ByteDance and Keling 3.0 from Kuaishou. The list shows that the HappyHorse-1.0 model achieved an Elo score of 1379 without including the audio dimension. This score is 106 points higher than the Seedance 2.0 model, which became popular at the end of February this year, and also higher than popular video generation models such as SkyReels V4 from Kunlun Wanwei and Keling AI 3.0.