Happyhorse-1.0 API

Happyhorse-1.0 API is a unified multimodal AI video generation model developed by Alibaba's ATH-AI. Built on a single-stream Transformer architecture, it generates 1080p high-definition video and native audio simultaneously in a single forward pass, so you no longer need to juggle separate tools for visuals and sound.

Unlike traditional models that require separate audio synthesis and lip-syncing steps, Happyhorse-1.0 API produces dialogue, environmental sounds, and sound effects perfectly synced with the visuals in one go. This means talking characters come out naturally lip-synced the moment the video is rendered, without extra post-processing.

For multilingual content, Happyhorse-1.0 API supports sub-pixel level lip-syncing across seven languages, helping your characters speak convincingly to global audiences. It currently ranks first in Artificial Analysis benchmarks for both text-to-video and image-to-video generation, making it a strong choice whether you are creating clips from a script or animating a still image.