Apple’s (AAPL) head of AI models, Ruoming Pang, is leaving the company to join Meta (META), Bloomberg reported Monday.

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.