PewDiePie vs T-Series – Wikipedia

PewDiePie vs T-Series was an online competition between two YouTube channels, PewDiePie (run by Felix Kjellberg) and T-Series (an Indian record company run by Bhushan Kumar) for the title of the most-subscribed channel on YouTube, which was ultimately won by T-Series. T-Series has held the title of most-viewed channel since early 2017, and PewDiePie had been the most-subscribed channel since 2013.

https://en.wikipedia.org/wiki/PewDiePie_vs_T-Series