Microsoft(US:MSFT) Sou Hu Cai Jing·2026-01-18 11:12Core Viewpoint - Elon Musk is suing OpenAI and Microsoft for up to $134 billion, claiming they have gained "unjust enrichment" from his early contributions to OpenAI, which he believes should be returned [1][2] Group 1: Lawsuit Details - Musk's legal filing states that he donated $38 million in seed funding to OpenAI in 2015 and alleges fraud, asserting he is entitled to a significant portion of OpenAI's current $500 billion valuation [1] - The lawsuit emphasizes that this is not a typical investment return dispute, but rather a case of "institutional appropriation" following OpenAI's shift from a non-profit to a for-profit structure [1] Group 2: OpenAI and Microsoft's Response - OpenAI has labeled Musk's lawsuit as a "harassment action," asserting that it is baseless and accusing Musk of launching a "harassment lawsuit" [2] - Both OpenAI and Microsoft have requested the court to limit the testimony of Musk's expert witness, claiming the valuation model presented is "fabricated, unverifiable, and unprecedented" [2] Group 3: Legal Proceedings - A federal judge in Oakland, California, has ruled that the case will be heard by a jury, with the trial expected to start in April of this year [2] - If the jury supports Musk's claims, he could potentially receive substantial damages, including punitive damages and further relief from the court [2]