Apple Rebuilt Siri From Scratch for iOS 27

The company says the new multimodal assistant is model‑driven and built to limit data offloading while using staged cloud inference.

Overview

Apple abandoned an incremental update and tore Siri down to rebuild it on newer foundation models to deliver a natively multimodal assistant.
Company engineers demonstrated the rebuilt Siri running on real devices at WWDC, and developer betas for iOS 27 and the new Siri were released there.
Apple plans a public beta soon and a broader consumer rollout in the fall with feature staging by device, language and region to manage performance and privacy.
The system uses a privacy‑first hybrid architecture that favors on‑device processing and routes heavier inference to Apple’s private cloud and selected partners for load‑intensive tasks.
Limitations on server use and device support could shape how quickly users adopt the new Siri and may influence upgrade decisions for phones, watches and other Apple hardware.