The high-stakes 2026 legal trial between Elon Musk and OpenAI, centered on a $150 billion claim of betrayal. Musk alleges that Sam Altman and Greg Brockman abandoned the organization's nonprofit mission to create a lucrative "wealth machine" with Microsoft. Internal evidence, including Brockman's personal diaries and private emails, reveals early power struggles and a "bait and switch" regarding the company's structure. Conversely, OpenAI's defense argues that Musk is motivated by competitive jealousy and his own failed attempt to secure unilateral control. The trial highlights the friction between humanitarian AI safety goals and the massive capital requirements of modern technological development. As prominent leaders testify, the case threatens to complicate OpenAI's trillion-dollar IPO and reshape the governance of artificial general intelligence.