FWIW, wake words are a stopgap; if we want to have a Star Trek level voice interfaces, where the computer responds only when you actually meant to call it, as opposed to using the wake word as a normal word in the conversation, the computer needs to be constantly listening.

A good analogy here is to think of the computer (assistant) as another person in the room, busy with their own stuff but paying attention to the conversations happening around them, in case someone suddenly requests their assistance.

This, of course, could be handled by a more lightweight LLM running locally and listening for explicit mentions/addressing the computer/assistant, as opposed to some context-free wake words.