We put Siri, Alexa, Google Assistant, and Cortana through a marathon of tests to see who’s winning the virtual assistant race — here’s what we found

 

There’s no perfect way to evaluate a talking AI database, let alone four of them, but I tried to cover as many fundamental topics as I could.

http://www.businessinsider.com/siri-vs-google-assistant-cortana-alexa-2016-11