Meta is adding yet another top A.I. expert to the company’s rapidly growing roster of talent, much of it plucked from rival firms like OpenAI, Anthropic and Google. Apple now joins the mix of disgruntled competitors, with researcher Ruoming Pang leaving the iPhone maker to join Mark Zuckerberg ’s push toward advanced forms of A.I.

After poaching one of Apple's top artificial intelligence executives with a $200 million pay package to lure him away from the company,