Gabriadze graduated from the Higher Scriptwriters' Courses in Moscow and worked as a correspondent for the newspaper Youth of Georgia.

[4] He began working as a screenwriter for director Georgiy Daneliya and co-wrote some of his most popular films, including Mimino and Kin-dza-dza!

Gabriadze wrote over 35 screenplays, including such influential films as Don't Grieve, Mimino, The Eccentrics and Kin-Dza-Dza!.

His productions Alfred and Violete, The Autumn of our Springtime, Ramona and The Battle of Stalingrad brought the theatre recognition of international audiences and critics alike.

As a painter, he contributed to numerous exhibitions and his works are preserved in museums and private collections.