Z.ai confirms Ox Alpha was GLM-5.3-Flash running on ~100,000 Chinese chips; HK shares surge ~8–12%
Zhipu
On August 27–28, 2026, Z.ai (Zhipu AI’s international brand) confirmed that the anonymous stealth model Ox Alpha on OpenRouter was in fact GLM-5.3-Flash — a 320B-total / 18B-active natively multimodal MoE with a 1M-token context, MIT-licensed. Z.ai stated the model was trained and served entirely on a cluster of approximately 100,000 China-made chips. Hong Kong-listed Z.AI (02513) jumped ~8–12% across Aug 27–28.
Why it matters
The Ox Alpha reveal is the first explicit claim by a top-tier Chinese lab that a frontier-tier MoE was trained and inferenced end-to-end on domestic silicon at meaningful cluster scale (100K chips), and the market priced it in.
Importance: 4/5
major Chinese-lab release; first explicit claim of frontier-tier MoE on ~100K domestic chips; market-priced (HK +8-12%)