Apple continues to face challenges in retaining top AI talent, with several researchers departing for competitors like Meta and Google DeepMind. This latest wave of exits highlights ongoing shifts within the company’s artificial intelligence efforts.
Stuart Bowers Joins Google DeepMind
One notable departure involves Stuart Bowers, a senior executive deeply involved in Apple’s Siri development. Bowers, whose responsibilities expanded significantly last year, reported directly to Siri chief Mike Rockwell. Prior to his focus on voice assistant technology, he contributed to Apple’s now-canceled self-driving car initiative.
Bowers’ move to Google DeepMind carries a layer of irony, as he will contribute to the Gemini models that power elements of Apple’s forthcoming Siri enhancements. Sources close to the matter confirm his transition underscores the competitive landscape in AI innovation.
Ongoing Reorganizations in AI and Siri Teams
Apple’s AI and Siri divisions have undergone substantial internal changes throughout the past year. A key development occurred in December when John Giannandrea relinquished his position as Senior Vice President of Machine Learning and AI Strategy. Giannandrea remains in an advisory capacity through spring 2026 before fully retiring.
These transitions reflect broader efforts to realign resources and leadership amid rapid advancements in generative AI technologies.

