Researchers at Arizona State University’s speech lab conducted an analysis comparing the voice of actress Scarlett Johansson to OpenAI’s now-pulled “Sky” personal assistant, and found that Johansson’s voice bears a striking resemblance to Sky, with a similarity rating of over 98% compared to 600 other professional actresses. While the analysis found that Sky also shared similarities with other Hollywood stars, including Anne Hathaway and Keri Russell, Johansson’s voice was found to have undeniable commonalities with Sky, including identical vocal tract lengths. The similarity has sparked a debate over whether OpenAI intentionally designed Sky’s voice to mimic Johansson’s, with Johansson accusing the company of copying her voice and OpenAI maintaining that it was a coincidence.

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