In 1924, Halasz moved to Paris to live, where he would stay for the rest of his life. He began teaching himself the French language by reading the works of Marcel Proust. Living among the gathering of young artists in the Montparnasse quarter, he took a job as a journalist. He soon became friends with the American writer Henry Miller, and the French writers Léon-Paul Fargue and Jacques Prévert. In the late 1920s, he lived in the same hotel as Tihanyi.