Bekhti was born in 1984 in Issy-les-Moulineaux to an Algerian family from Sidi Bel-Abbes. She is the youngest of three children. She also has heritage from Kabylie.
That year, she also played Zarka in Paris, je t'aime (2006) (segment "Quais de Seine", directed by Gurinder Chadha) and Mounia in Mauvaise Foi, playing the sister of Roschdy Zem. On television, she had a small role in an episode of the series Madame le Proviseur and in the series Les Tricheurs alongside Pascal Légitimus.
Bekhti is married to Algerian-French actor Tahar Rahim, whom she met while filming A Prophet in 2007.
In 2008 she won a Best Actress Award at the Silhouette Festival for her role in Rachid Hami's Choisir d'aimer. She followed this with Pour l'amour de Dieu, an Arte telefilm by Bouchaala Ahmed and Zakia Tahri. Bekhti starred in Ali Baba alongside Gérard Jugnot and appeared in Des poupées et des anges by Nora Hamdi. For her role as Lya in the film, she was shortlisted for the César Award for Best Actress, although she did not make the final list of nominees.
In 2010 she worked in a wide variety of projects. She worked with Alain Tasma again in the telefilm Vous êtes leur crainte, based on the novel of the same name by Thierry Jonquet. She also appeared in Jean-Luc Perréard's Itinéraire bis, in the musical Toi, moi, les autres... directed by Audrey Estrougo and in Anne De Petrini's debut film Il reste du jambon?.
In 2011 she was signed as the new face of L'Oréal, the cosmetic firm.
Bekhti went to a theater school in Paris (18) before entering the program of Stéphane Gildas in Tolbiac. She next studied in the program of Bérengère Basty at the Art’aire studio. To live and pay for her acting studies, she worked odd jobs (clothes, telemarketing).
