[4] Sahu was born on 29 June in Rourkela, Odisha, but grew up in Bhubaneswar.

[4] In 2013, she was named first runner-up in Kolkata's regional Femina Miss India pageant.

[4][11][12][13] Archita made her Bengali and Hindi cinema debut in the film The Light: Swami Vivekananda, where she played Moina Bai.

[14] Sahu is the state Ambassador of UNICEF and Government of Odisha's "Eradication of child labour".

[18][19][20] On 1 March 2021, Sahu married fellow actor Sabyasachi Mishra in Jaipur.