But it wasn't exactly thanks to fellow YouTuber Jake Paul.
In a recent interview with vlogger Casper Lee, the twins call out Jake for claiming that he made them both famous.
"Jake never tried to sign us," Ethan explained. "There's something in his book that says something how he, like we were his 'test experiments' and he flew us out to L.A. — which he didn't. He did let us stay with him and we made content with him and all that stuff. We had fun."
Grayson went on to note: "We were never even presented with a contract. I think the whole Team 10 thing started probably two years after we first started doing everything."
Ethan added, "When we first came out, we were literally just making content as friends. Because none of us had friends. Vine was a new platform, we were the youngest dues. We were only 15 or 14 and Jake was 17.
"Jake was a great friend of ours and I still believe the kid is a good person, deep down." But, "there are some things that I've seen that I don't agree with. He's said some things privately to people that I know about us that I just don't know why he said it."
You can watch the full interview below: