 The Dirty Disco remix fused layered piano chords and synth stabs with the drum programming in order for the song to sound "tribal".Writing for "Billboard", Jon Ali praised "Sweet but Psycho" for providing an "instantly addictive" slice of pop, while the publication also singled out the "pristine, instantly repeatable chorus".Sam Brooks of "The Spinoff" deemed it "a Frankenstein of a pop track", noting that it would fit the tracklist of Lady Gaga's 2008 debut album "The Fame".