Top artificial intelligence talent at Alibaba Group Holding’s Tongyi Lab, developer of the widely used open-source Qwen models, has become highly sought after, with a number of leading experts leaving to join rival tech giants amid a heated recruitment race. Recent departures include Yan Zhijie and Bo Liefeng, two senior figures at Tongyi. Yan, who joined Alibaba in 2015, was an early member of the company’s cutting-edge Damo Academy and later led Tongyi’s speech lab. He left Alibaba in February...