The voice-activated personal assistant on your phones are getting smarter by the day and the battle for most usable artificial intelligence is being fought between Apple Siri, Google Now and Cortana. Stone Temple, a consulting company decided to put these three against each other to determine the best technology amongst them by evaluating each with no less then 3,000 voice queries.

Want to know who won the fight? Just watch the video below and click the "Read More" link below to get the exact results.