Apple announced a hybrid stack: on-device models and Private Cloud Compute for heavier tasks, with a privacy focus.
At WWDC 2024, Apple presented Apple Intelligence: writing, image, and agent features tied to iOS/macOS, with on-device processing when possible.
For heavier queries, Private Cloud Compute promised ephemeral, auditable servers. OpenAI was integrated as an external option.
The announcement legitimized SLMs and custom silicon (Neural Engine) as a mass-distribution path—billions of devices.
MacRumors on September 14, 2026 reports that private frameworks in iOS 27 and macOS Golden Gate show Model Delegation: Claude as a Siri extension and an Inference provider in Model Manager Services able to replace Apple’s server-side Siri model with e.g. GPT-5.6 receiving the Siri planner prompt and tool definitions. Finding by sleuth “pdfu.” DMA EU context. Not yet user-facing; ChatGPT extension exists on Golden Gate RC; Claude entitlement not opened to third parties. Caveat: reverse-engineering of private frameworks—Apple has not formally announced this productization.
After the Muse Mac app launch (~17 Sep), users reported the assistant referencing Messages content; David Singleton (Meta Superintelligence Labs) apologized on Threads (~19 Sep) because Muse gave an incorrect explanation of its own permissions.
After iOS 27 launched on 14 September 2026 with Apple Intelligence in 16 languages and Siri AI beta in English only, Apple confirms that French, Japanese, Korean, Portuguese and Spanish arrive in October. The iOS 27.2 beta already gives developers those languages; the EU still faces restrictions and China awaits regulatory approvals.