> In a year-and-a-half, the time required to train a large image classification system on cloud infrastructure has fallen from about three hours in October 2017

> In a year-and-a-half, the time required to train a large image classification system on cloud infrastructure has fallen from about three hours in October 2017 to about 88 seconds in July 2019. During the same period, the cost to train such a system has fallen similarly. 3 hours to 88 seconds? Wow... I wonder if that's been further reduced today (December 2019)