The emergence of HappyHorse-1.0 is the result of a strategic reorganization at Alibaba. Under the leadership of CEO Eddie Wu, the company established the Alibaba Token Hub (ATH), a consolidated AI division designed to accelerate the development of market-leading models.
From Kuaishou to Alibaba: Zhang Di's Journey
The story of HappyHorse 1.0 begins with Zhang Di (张迪), one of the most influential figures in China's AI video generation space. As Vice President of Kuaishou, Zhang Di led the development of the Kling video model, which became one of the most prominent AI video generators in the industry.
Zhang Di's departure from Kuaishou to join Alibaba was a significant event in China's AI industry, reported by major outlets like the South China Morning Post (SCMP) and Bloomberg. At Alibaba, he was tasked with leading the ATH AI Innovation Unit—a specialized team focused on pushing the boundaries of AI video generation technology.
What Is Alibaba ATH AI?
ATH AI (Alibaba Token Hub AI Innovation Unit) is a specialized division within Alibaba Group dedicated to AI video generation research and development. While Alibaba has multiple AI research divisions, ATH AI is specifically focused on market-ready video generation models.
Under Zhang Di's leadership, ATH AI developed HappyHorse 1.0, which achieved the #1 rank on the Artificial Analysis Video Arena in April 2026.
The Anonymous Debut and Rise to #1
HappyHorse 1.0 first appeared on the Artificial Analysis Video Arena on April 7, 2026, submitted anonymously. Within days, it rapidly climbed the leaderboard through blind community voting, eventually reaching the #1 position.
On April 10, 2026, Alibaba officially confirmed that HappyHorse 1.0 was developed by their ATH AI Innovation Unit. This "quiet launch" strategy allowed the model to earn credibility through pure quality evaluation.
Why This Matters for the AI Industry
- Talent Migration: Zhang Di's move demonstrates how top-tier talent drives rapid innovation.
- Unified Multimodal Models: HappyHorse's one-pass audio-video generation represents a significant architectural shift.
- China's AI Race: Intense competition between Alibaba, ByteDance, and Kuaishou is producing rapid improvements in AI video quality.
Timeline of Events
| Date | Event |
|---|---|
| 2024–2025 | Zhang Di leads Kling AI development at Kuaishou. |
| Late 2025 | Zhang Di joins Alibaba's ATH AI Innovation Unit. |
| April 7, 2026 | HappyHorse 1.0 appears anonymously on Artificial Analysis. |
| April 10, 2026 | Alibaba officially confirms HappyHorse 1.0 origins. |
| April 30, 2026 | Scheduled public API release date. |
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