[citation needed] Beöthy found a place in the Parisian art scene and took part in the exhibit of the Salon des Indépendants.
[citation needed] In 1931, Beöthy co-founded the group Abstraction-Creation with sculptor Georges Vantongerloo and painter Auguste Herbin, and was its vice-president for a time.
From 1931 to 1939, he had an exclusive contract with Leonce Rosenberg's Galerie de l'Effort Moderne, and in 1938 he organized an exhibit in Budapest, which was the first exposure of his nonfigurative art to the public in Hungary.
In 1946, he became a founding member of the Salon des Réalités Nouvelles, and the Galerie Maeght in Paris showed a retrospective of his work.
For a short time between 1952 and 1953, he gave lectures on color and proportion to architecture classes at the École des Beaux-Arts, and in his subsequent years he worked together with architects and was otherwise part of the planning for the expansion of Le Havre.