Apple Inc. artificial intelligence head John Giannandrea is stepping down from the role, capping a tumultuous tenure that included a fumbled entry into generative AI.

John Giannandrea, hired from Google, is leaving after the release of a new Siri was postponed. Apple has fallen behind rivals in efforts to develop A.I. products.

In a departure that took almost as long as Siri needs to find some obscure music requests, Apple has announced a new vice president of AI: Amar Subramanya, who will replace former AI chief John Giannandrea.

Apple has tapped AI researcher Amar Subramanya, a longtime Google exec, as its new VP of AI. Current AI exec, John Giannandrea, will retire from Apple in 2026.

The poor reception of Apple Intelligence and its biggest feature, a much-improved Siri that’s still not released, led to a shake-up.

Apple is shaking up its top AI ranks, poaching a Microsoft executive and reorganizing after announcing the retirement of its top AI leader, whose tenure was defined by the company’s artificial intelligence struggles.

In a press release today, Apple announced the retirement of John Giannandrea, a former machine learning luminary who worked as Apple’s senior vice president for machine learning and AI strategy starting in 2018.