(COMBO) This combination of pictures created on February 11, 2025 shows OpenAI CEO Sam Altman (L) in Berlin on February 7, 2025 and Elon Musk at US President Donald Trump's inanuguration ceremony in Washington, DC, on January 20, 2025. Elon Musk's lawsuit accusing high-profile artificial intelligence company OpenAI of betraying its non-profit mission heads for trial on April 27, 2026 with the selection of jurors. The legal clash in a courtroom across the bay from San Francisco pits the world's richest person against a startup Musk once backed and now competes with in the booming AI sector. (Photo by John MACDOUGALL and SAUL LOEB / AFP via Getty Images)