Taxi" was a commercial success in Japan; it became the group's first single to sell 100,000 physical units in its first week of release.

Taxi / Run Devil Run" was the first release by the group that contained an original Japanese song, as all previous releases by the group in Japan had been covers of their Korean songs, "Gee" and "Genie".

[7] The single was released internationally on April 23, 2011, through digital download on the iTunes store.

[8] In the United Kingdom, the single impacted BBC Radio 1's Essential Mix on October 27, 2012.

Taxi" received its first performance as a single on You Hee-yeol's Sketchbook broadcast on December 2, 2011.

[15] They have since performed the song (both Korean and Japanese versions) on SM Town tours.

[17] The single also managed to peak at the number one spot on Billboard Japan Hot 100 for two consecutive weeks.

[18][19][20] It reached a peak of eleven on the year-end singles chart of the Japan Hot 100.

In the group's native South Korea, the single sold over 13,000 copies on the Gaon Albums Chart.

Taxi" was handled by long-time collaborator Rino Nakasone, with Sim Jaewon.

[26] The video begins with the girls dressed in yellow taxi driver outfits in front of a screen that flashes words and patterns in blue lighting.

The bridge continues with vocals by Yuri, Sunny, Sooyoung, Jessica, Tiffany and Taeyeon, after which there are more alternating shots between the two scenes (yellow and black outfits) for the final chorus, ending with the girls freezing in position in their yellow uniforms as the light fades out.

A music video of the Korean version was released to accompany the single's release made entirely from the group's performance of the song on their 2011 Girls' Generation Asia Tour, with a dance rehearsal for the song leaking in March 2012.