In a significant setback for Apple, Ke Yang has departed just weeks after being appointed head of its AI team, joining Meta's rapidly expanding AI workforce. Yang led the Answers, Knowledge and Information (AKI) group aimed at enhancing Siri’s capabilities. His exit follows a trend of attrition at Apple, which has seen several key AI figures, including Jian Zhang and Ruoming Pang, leave for Meta, raising concerns over Apple's AI strategy and team cohesion.