Elon Musk Seemingly Admits xAI Has Used OpenAI's Models to Train Its Own

Maxwell ZeffParesh DaveBusinessApr 30, 2026 1:41 PMElon Musk Seemingly Admits xAI Has Used OpenAI's Models to Train Its OwnWhile answering questions under oath, Musk argued it’s standard practice for AI labs to use their competitors' models.Photograph: David Paul Morris/Getty ImagesCommentLoaderSave StorySave this storyCommentLoaderSave StorySave this storyWhile testifying on Thursday in federal court, Elon Musk seemed to indicate that his AI lab may have used OpenAI’s models to train xAI’s own.

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