News you want to use week 18.

Digital marketing firm Stone Temple tested Alexa, Cortana, Google Assistant, and Siri via an exhaustive list of 4,942 queries. For each, the company checked if the assistant answered, if the assistant understood the question, if the answer was wrong, and if the answers were sourced from a database or a third-party source, like Wikipedia. 

Google Assistant is the smartest AI assistant. Microsoft’s Cortana is surprisingly good, coming in second. Alexa is learning faster than any other assistant. Apples Siri is, according to the test results, still a bit behind the rest.