John Giannandrea, Apple’s AI chief, is leaving his position amid challenges with Siri's development. Amar Subramanya, a former Microsoft executive, will take over and is expected to enhance Apple's AI capabilities. Giannandrea will remain as an advisor until his retirement in 2026.

Apple's struggles with AI, particularly the failures surrounding Apple Intelligence, highlight a disconnect between its traditional slow-moving culture and the fast-paced demands of AI technology. Key figures like John Giannandrea and Craig Federighi faced internal challenges, resource allocation issues, and a lack of urgency that hindered Apple's ability to compete effectively in the AI space. The company's reluctance to adapt may ultimately seal its fate in this rapidly evolving industry.