Apple is calling their typing correction a “transformer”. That is a component of LLMs, but Apple may not be using a full LLM in that case. This feature seems like a sandbox for them to try out some of this tech in the field while they do work internally on more ambitious implementations.

Apple is also dogfooding an LLM AI tool internally also likley to gain a better understanding of how this works in practice and how people are using them. https://forums.macrumors.com/threads/apple-experimenting-wit...