The Great Dictator is a 1940 American political satire comedy-drama film written, directed, produced, scored by and starring British comedian Charlie Chaplin, following the tradition of many of his other films. Having been the only Hollywood filmmaker to continue to make silent films well into the period of sound films, this was Chaplin's first true sound film.
Chaplin doesn't actually speak any lines in The Great Dictator.
Chaplin starred in The Great Dictator, his first sound film, but we don't know if he had any spoken lines. The algorithm for some reason thinks he doesn't speak any - maybe thinking it was a silent film?