Artificial intelligenceChinese tech trio pour billions into the technology as race for users heats upTencent is leveraging its massive ecosystem of products, including its WeChat app, to win over AI application users.  © ReutersHONG KONG -- As competition for AI users intensifies in China, Tencent is taking a different approach than rivals Alibaba and ByteDance by focusing more on smaller models and meeting diverse user needs, even as all three companies pour billions of dollars into the technol...