Siri-us setback: Apple's AI chief steps down as company lags behind rivals

Apple thanked John Giannandrea for his efforts. Apple thanked John Giannandrea for his efforts. Siri-us setback: Apple's AI chief steps down as company lags behind rivals Apple's head of artificial intelligence, John Giannandrea, is stepping down from the company. The move comes as the Silicon Valley giant has lagged behind its competitors in rolling out generative AI features, in particular its voice assistant Siri. Apple made the announcement on Monday, thanking Giannandrea for his seven-year tenure at the company.