Who’s smartest — Alexa, Siri, Cortana, or Google Assistant?

You won't be shocked to learn that Apple's Siri virtual assistant has the best sense of humor. But you might be surprised to learn which virtual assistant is the smartest—and which one is no. 2 with a bullet.
    Related:
  • Consumer Electronics
  • Mobile Apps
  • Artificial Intelligence
  • Gadgets
  • Computers and Peripherals
James A. Martin is a seasoned tech journalist and blogger based in San Francisco and winner of the 2014 ASBPE National Gold award for his CIO.com blog. He writes CIO.com's Living the Tech Life blog and is also a content marketing consultant.