The Brutalist courted controversy after its editor David Jancso revealed that AI was used to improve cast members' dialogue in the film, including that of Best Actor Oscar winner Adrien Brody. Recently, filmmaker David Cronenberg supported the makers' decision to use AI for this purpose. Speaking at the London Soundtrack Festival, Cronenberg stated that the use of AI is common in filmmaking and that there was a deliberate attempt from other Oscar nominees to tarnish the image of director Brady Corbet's film, which won the Best Picture Oscar award this year. The filmmmaker, often regarded as 'the master of body horror', described the smear campaign as "a Harvey Weinstein kind of thing, though he wasn’t around."

Cronenberg added that filmmakers "mess with actors' voices all the time," referring to John Lone's portrayal of Song Liling in their 1993 film M Butterfly. "When he was being this character, this singer, I raised the pitch of his voice and when he’s revealed as a man, I lowered to his natural voice. This is just a part of moviemaking," said the maker of films such as The Fly and A History of Violence.