Hidden iOS 27 API Lets Developers Swap Siri's Backend with Claude

Developers discovered a hidden "ModelDelegation" API in iOS 27 and macOS Golden Gate that lets apps add Siri Extensions and swap Siri's server backend with third-party models. One developer has already wired Siri's Ask menu to Claude, though Apple has not officially announced the feature.

2026-09-14 ~ 2026-09-14 · 2 related posts