Alibaba Cloud opens limited beta access to HappyHorse 1.0 through Model Studio, with native 1080p output, synchronized audio, and capabilities pitched directly at the frontier video tier currently occupied by Seedance 2.0 and Veo 3.1. The day-after-Sora-shutdown timing isn't subtle: while one major player exits, another arrives and immediately becomes the new comparison point in every creator's frontier-model lineup.