Rexha and Guetta performed the song live at the Billboard Music Awards and the closing ceremony of the 2023 FIFA Club World Cup.

[4] Inspired by house music,[5] "One In A Million" is an EDM and pop song that samples Guetta's collaboration with American singer Kelly Rowland "When Love Takes Over" (2009).

[6][7] The song's lyrics are a homage to love, wherein Rexha marvels at the existence of a significant other,[5][8] placing emphasis on the exploration of profound connections.

[4] Isidora González also from Los 40 identified the song's distinctive features, describing them as a "pure expression" with "stimulating" beats, "powerful" vocals and "cheerful" melodies.

[11] A critic from NRJ hailed the collaborative evolution between the artists on their success with "I'm Good (Blue)", noting that the song "seamlessly continues" the path set by its predecessor.

[30] The visual then advances as the camera transitions into virtual environments, presenting Rexha within a turquoise setting illuminated by ascending laser lights.

[30] The narrative unfolds further as the camera introduces Guetta throughout a digital projection in a dark backdrop, engaging in a performance complemented by synchronised white lines moving in harmony with the beat.

[30][31] The visual narrative persists with interspersed shots depicting Rexha within the aforementioned settings, accompanied by dynamic transitions in the colors of the lights.

[30] Tomás Mier from Rolling Stone cited the video as an exploration of "love in cyberspace" and noted its resonance following the substantial success of "I'm Good (Blue)".