Ilya Sutskever, the former chief scientist of OpenAI, testified in a California courtroom that he spent approximately one year compiling evidence of CEO Sam Altman's alleged dishonesty. Sutskever indicated that Altman exhibited a 'consistent pattern of lying' and undermined other executives, prompting discussions about his removal from the CEO position. Sutskever had prepared a 52-page document detailing these claims at the request of OpenAI's board. His testimony is part of a legal dispute involving Elon Musk, who is seeking $150 billion in damages from OpenAI and its major investor, Microsoft, alleging that the company has strayed from its nonprofit roots. Musk has demanded the removal of Altman and President Greg Brockman from their roles. Sutskever also disclosed that his ownership stake in OpenAI is valued at around $7 billion and mentioned that after Altman's brief ouster, there were discussions about merging OpenAI with rival Anthropic. Microsoft CEO Satya Nadella characterized the tech giant's investment in OpenAI as a 'calculated risk' during the trial. The closing arguments are set for Thursday, as the trial continues to unfold.