SummaryCompaniesApple talks with Tencent, ByteDance are at a very early stage-sourcesTech firms and startups have launched dozens of AI models in ChinaApple needs local partner as ChatGPT not available in ChinaBEIJING, Dec 19 (Reuters) - Apple (AAPL.O), opens new tab is in talks with Tencent (0700.HK), opens new tab and TikTok owner ByteDance about integrating their artificial intelligence models into iPhones sold in China, according to three sources familiar with the matter.The U.S. company sta...