“Alien Autopsy” was first previewed by Trippie Redd on May 16, 2019, via a post on his private Instagram account. The post showed two videos of Playboi Carti playing the song in a studio with the caption:
Alien autopsy👽
On June 17, 2020, over a year after the song was initially previewed, Trippie confirmed that the song would be releasing on his artist Sunny 2point0’s album BEEN BOOM1N, via the comment section of one of Trippie’s Instagram fan-pages.
On June 22, Sunny posted on Instagram that he would release the song on his album if he reached 10,000 comments and 100,000 followers.
The next day, he played more of the song on an Instagram livestream and gave information about the song.
On July 31, Sunny 2point0 released the song to his SoundCloud profile after not gaining clearance to put the song on his album.