So yes, most of the new AI-infused or AI-powered features coming to iOS, iPadOS 18, and macOS 15 Sequoia are powered by Apple Intelligence using either on-device or in the Private Compute Cloud. And yes, that goes for the vast majority of Siri’s new intelligence and new powers, as well.
But Apple is giving users the option to pull from another LLM (large-language model) – OpenAI’s ChatGPT-4o may be called upon when Siri doesn’t quite know the answer or when you might want to mix up your writing style. You won’t be stuck with OpenAI’s latest LLM, though.
