Microsoft CEO Satya Nadella testified on Monday, revealing that the company's partnership with OpenAI has generated $9.5 billion in revenue as of March 2025. This figure includes a revenue-sharing agreement where OpenAI contributes 20% of its earnings to Microsoft. Nadella expressed pride in the investment decision, emphasizing it was not a donation but a strategic move. During the testimony, internal emails from 2022 were disclosed, showing Nadella's concerns about potential financial losses and his desire to renegotiate terms to access OpenAI's AI expertise. He also addressed the 2023 firing of OpenAI's Altman, criticizing the board's actions and denying any pressure to reinstate him. Nadella confirmed that Elon Musk had not directly expressed dissatisfaction with Microsoft's investment, maintaining open communication between them.