John Giannandrea, Apple’s former head of artificial intelligence, is set to leave the company this week as his final stock vesting date approaches.

In his “Power On” newsletter, Mark Gurman noted that Giannandrea’s exit has been a prolonged one. Apple moved to dramatically reduce his role in March 2025 following the disappointing launch of Apple Intelligence and ongoing delays to the Siri overhaul, stripping him of oversight of Siri, robotics, and other AI teams at that time. The company made the…

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