Apple Inc. is experiencing an uncharacteristic upheaval in its ranks of executives as the company tries to get back up to speed on artificial intelligence (AI) development after months of delay and missteps.

Mike Rockwell, the Apple Vision Pro chief, has replaced John Giannandrea as the executive in charge of Siri, in an executive shakeup to try and rescue Apple's flailing AI efforts.

In the process, the Siri team was reassigned to this new department and placed under Giannandrea’s authority. By early 2019, the new SVP was shuffling things around to refocus on longer-term research, presumably in hopes that taking the broader view would ultimately help Siri improve.