How to use AI in the house

I’ve been using VoiceGPT for a while now. It’s a nice android app which allows interacting with ChatGPT by voice. I was wondering if there’s a viable and affordable way with today’s tecnnology to have this wonderful AI, or any other, “always available” in the house. Something like a device that can connect to wireless microphones and speakers around the house, with no need to click buttons before speaking, just talk and get a reply. I know Google Home does that, but i don’t like the way Google responds and i’d prefer a more private and custom solution.