free voice recognition like google assistant and alexa

[Nikhil]

I have installed google assistant on my rpi magic mirror and it is running well, but I read here https://aiyprojects.withgoogle.com/voice-v1/ google assistant provides only 60 mins per month free assistance, after that billing will start, also I read using and customized alexa api for magic mirror is not legal (not sure, correct me), so what are the other voice recognition software I can use for magic mirror that are free forever and as good as google assistant and alexa?

[Sean]

@nikhil
That limitation is not for assistant api but for cloud speech api. ( I had used that api in my previous module)