During its first three years, the group was a progressive rock band with a somewhat fluid membership known as Todd Rundgren's Utopia. Most of the members in this early incarnation also played on Rundgren's solo albums of the period up to 1975. By 1976, the group was known simply as Utopia and was a stable quartet of Todd Rundgren, Kasim Sulton, Roger Powell and John "Willie" Wilcox. This version of the group gradually abandoned prog-rock for straightforward rock and pop.
In 1980, they had a top 40 hit with "Set Me Free". Though often thought of as a Rundgren-oriented project, all four members of Utopia wrote, sang, produced and performed on their albums; "Set Me Free", for example, was sung by Sulton. The group broke up in 1986, but reunited briefly in 1992. More recently, beginning in 2011 the earlier prog-rock incarnation known as Todd Rundgren's Utopia was revived for a series of live shows.