The world’s most popular YouTuber is testing new waters.

Jimmy Donaldson, better known as MrBeast online, uploaded his most recent video to X on Monday. The video, titled “$1 Car vs $100,000,000 Car!!!” was uploaded with an announcement.

“I’m curious how much ad revenue a video on X would make so I’m reuploading this to test it. Will share ad rev next week,” the post read.

The video was quickly noticed by X owner Elon Musk, who shared the post with his millions of followers.

Mr. Donaldson’s video on X is a major win for Mr. Musk, who has been courting popular content creators since he bought Twitter in 2022.

Mr. Musk originally asked Mr. Donaldson in December to upload his videos to X as well as YouTube. The YouTuber declined, implying that X was untested waters.

But with Mr. Musk’s promotion, MrBeast’s video is sure to be popular on X, at least for now. Mr. Donaldson’s post has racked up nearly 80 million views as of Wednesday, but that doesn’t mean so many watched the video.

Despite the high view count, a question is whether X will pay out as much as YouTube. X’s monetization policy helps only those who pay for X Premium.

MrBeast is one of YouTube’s most popular and recognizable faces. His videos, usually featuring an extreme challenge, regularly get millions of views and generate significant revenue for Mr. Donaldson and YouTube.

• Vaughn Cockayne can be reached at vcockayne@washingtontimes.com.