I don’t go that far back but I first started using smart speakers (voice assistants) in 2018 and at that time, after some research, I started out with Google Home devices with Google Assistant (obviously) as the software assistant. Today I still have some of my Google devices active in a few rooms but I mainly use Amazon Alexa devices and I occasionally use Siri on my Apple Watch & iPhone.Oh, so like Google’s knowledge graph?
Welcome to 2012, Apple. Keep skating to where that puck used to be; maybe one day you’ll catch a glimpse of where it is now.
The reason I switched away from Google for my primary devices is that Google seemed (and still seems) to have given up on refreshing the hardware, Amazon recognised the wake up word way better than my Google devices & false-triggered way less, and it was way faster to respond.
None of that stuff was LLM based but for basic question answering even back in 2018 Google Assistant was way ahead of Siri today in terms of the specificity with which it could extract intent, the use of context from previous questions (resolving anaphoric references), and formatting specific answers to match the intent. Even today neither Siri nor Alexa can do any of that stuff as well as Google Assistant could do it way back in 2018, or at least that is my anecdotal experience based on my usage of all of these systems over the past few years.