Question: Who has the most subscribers on youtube ever?

Disambiguated questions and answers:
context: Throughout 2012 and 2013, Kjellberg's channel was one of the fastest growing on YouTube, in terms of subscribers gained. In 2013, the channel grew from 3.5 million to just under 19 million subscribers, and by the end of 2013, it was gaining a new subscriber every 1.037 seconds. "Billboard" reported that the PewDiePie channel gained more subscribers than any other channel in 2013. Additionally, in the second half of 2013, it earned just under 1.3 billion video views.
question: Which channel has the most subscribers on youtube ever as of Dec 23, 2013?
short_answers: PewDiePie
wikipage: PewDiePie
context: Kjellberg became the most-subscribed user on YouTube on 15 August 2013 (being briefly surpassed in late 2013 by YouTube Spotlight). He held the title until early 2019, when he publicly vied for it with Indian record label T-Series, before the company established a significant lead in April 2019 and Kjellberg conceded the position. For two years (from 29 December 2014 to 14 February 2017), Kjellberg's channel was the most-viewed channel on YouTube. , the channel has received over 102 million subscribers and 24 billion video views, ranking as the second-most-subscribed and thirteenth-most-viewed channel on the platform, and the most-subscribed and most-viewed channel operated by an individual.
question: Who has the most subscribers on youtube ever as of Dec 12, 2013?
short_answers: YouTube Spotlight
wikipage: PewDiePie
context: Throughout 2012 and 2013, Kjellberg's channel was one of the fastest growing on YouTube, in terms of subscribers gained. In 2013, the channel grew from 3.5 million to just under 19 million subscribers, and by the end of 2013, it was gaining a new subscriber every 1.037 seconds. "Billboard" reported that the PewDiePie channel gained more subscribers than any other channel in 2013. Additionally, in the second half of 2013, it earned just under 1.3 billion video views.
question: Which channel has the most subscribers on youtube ever as of Dec 8, 2013?
short_answers: PewDiePie
wikipage: PewDiePie
context: No context provided
question: Which person has the most subscribers on youtube ever as of Dec 23, 2013?
short_answers: Felix Arvid Ulf Kjellberg
PewDiePie
context: No context provided
question: Which person has the most subscribers on youtube ever as of Dec 8, 2013?
short_answers: Felix Arvid Ulf Kjellberg
PewDiePie

Long-form answers:
knowledge: content: Felix Arvid Ulf Kjellberg (/ˈʃɛlbɜːrɡ/ SHEL-burg, Swedish: [ˈfěːlɪks ˈǎrːvɪd ɵlf ˈɕɛ̂lːbærj] (About this soundlisten);[c] born 24 October 1989), better known online as PewDiePie (/ˈpjuːdiːpaɪ/ PEW-dee-py), is a Swedish YouTuber known primarily for his Let's Play videos and comedic formatted videos and shows. Kjellberg's popularity on YouTube and extensive media coverage have made him one of the most noted online personalities and content creators.
wikipage: PewDiePie
content: On 22 December 2013, his channel overtook the YouTube Spotlight channel to once again become the most-subscribed on YouTube.[46][47]
wikipage: PewDiePie Becoming the most-subscribed user and continued growth (2013–2015)
long_answer: Felix Arvid Ulf Kjellberg, better known online as PewDiePie, is a Swedish YouTuber known primarily for his Let's Play videos and comedic formatted videos and shows. Kjellberg's popularity on YouTube and extensive media coverage have made him one of the most noted online personalities and content creators. Throughout 2012 and 2013, Kjellberg's channel was one of the fastest growing on YouTube, in terms of subscribers gained. In 2013, the channel grew from 3.5 million to just under 19 million subscribers. As of December 8, 2013, PewDiePie had the most subscribers on YouTube ever. As of December 12, 2013, YouTube Spotlight had the most subscribers but PewDiePie overtook the YouTube Spotlight channel once again on December 22, 2013.