Apple Inc.’s top executive in charge of artificial intelligence models is leaving for Meta Platforms Inc., another setback in the iPhone maker’s struggling AI efforts.

Apple’s AI strategy is steered by software head Craig Federighi and Mike Rockwell; the engineering lead behind the Vision Pro and now Siri. Meanwhile, AI research remains under John Giannandrea, who was recently stripped of direct oversight of key AI consumer products amid delays and criticism of Apple’s AI rollout.