Today, the race is extremely close between Google Assistant and Amazon's Alexa. Apple's Siri is on the board but in a solid third place when it comes to reliability, knowledge and comprehension of human requests.  Overall, we give the edge to Google Assistant for its superior cadence, naturalistic tone and ability to understand (and answer) questions and follow up queries consistently.  That said, it's close enough that you can safely invest in either Google Assistant or Alexa based on other preferences like speaker style, devices and compatibility with other popular smart home products. Alexa is nearly as good as Google Assistant, so you really can't go wrong no matter which assistant you choose. You'll learn its quirks and how to interact with your assistant to coax the best responses and helpful information.  For fun, here's our deep dive into each assistant's "personality."