"Untitled, 2014" was a chart-topper in South Korea's Gaon Digital Chart, where it finished 2017 as one of the best-performing songs of the year.

[3] Tamar Herman of Billboard noted that "Untitled, 2014" "presents the simplest, most honest version" of himself that the artist "has ever put forward".

[5] Erica Russel from the website PopCrush highlighted that his "delicate yet powerful vocals shimmer on the sparse" ballad.

[8] In a positive review, Douglas Markowitz of Miami New Times stated that "[a]fter years in the game, all it takes for this mega-star to soar above the competition is piano and vocal.

[11] Even though it was released with only three days left in the tracking week, "Untitled, 2014" debuted at number one in the Gaon Digital,[12] and Download charts, with 218,500 copies sold.