Enlarge / Scarlett Johansson and Joaquin Phoenix attend Her premiere during the 8th Rome Film Festival at Auditorium Parco Della Musica on November 10, 2013, in Rome, Italy. (credit: Franco Origlia / Contributor | Getty Images Entertainment)

OpenAI has paused a voice mode option for ChatGPT-4o, Sky, after backlash accusing the AI company of intentionally ripping off Scarlett Johansson's critically acclaimed voice-acting performance in the 2013 sci-fi film Her.

In a blog defending its casting decision for Sky, OpenAI went into great detail explaining its process for choosing the individual voice options for its chatbot. But ultimately, the company seemed pressed to admit that Sky's voice was just too similar to Johansson's to keep using it, at least for now.

"We believe that AI voices should not deliberately mimic a celebrity's distinctive voice—Sky’s voice is not an imitation of Scarlett Johansson but belongs to a different professional actress using her own natural speaking voice," OpenAI's blog said.