Alkaizer has just earned Paragon level 100 while streaming, making him the world first softcore player to reach Paragon level 100. This is by no means a small task due to the massive amounts of experience needed. You can check out the final moment yourself on his stream page. He reaches level 100 at around 11:13:30. You an also check out Alkaizer's official armory page here.
For those who missed the information, below is a chart showing how much experience it takes to get to 100 along with a graph made by Vomica which gives you an idea how long the last 20 levels takes.