OpenAI's Sam Altman takes the stand to fend off Elon Musk's accusations he ‘stole a charity' NPROpenAI trial recap: Altman testifies he never promised Musk to keep company a nonprofit CNBCElon Musk Had ‘Hair-Raising' Idea of Passing OpenAI Onto His Kids, Sam Altman Says WIREDThere was a ‘morale boost' when Elon Musk left OpenAI, Sam Altman testifies CNN