Besides the usual assistant commands covering weather, calendar appointments, and more, Cortana can also control different parts of your computer.

Users in the US and UK were unable to get Google Assistant to "understand" prompts related to smart home devices. The issue is now resolved.

Home Assistant had previously released OpenAI and Google AI integrations for Assist, but until now, the voice assistant didn’t have access to smart home control when it was powered by an LLM.

Google Assistant issue, on phones and smart speakers, causing it to be unable to control smart home devices, replying "I don't understand." ...

How to control your smart home without yelling at a dumb voice assistant You can have nice, automated things without learning how to shout at speakers.