Elon Musk filed a lawsuit against OpenAI and its CEO, Sam Altman, alleging they violated a founding agreement to develop Artificial General Intelligence (AGI) for the benefit of humanity. Musk claimed OpenAI's actions, particularly with GPT-4, which he accused of being developed with Microsoft solely for profit, deviated from their original mission of openness and public benefit. He criticized the company's closed-source approach and its board's composition, alleging insufficient AI expertise and conflicts of interest, given Microsoft's involvement.