xAI, Elon Musk’s AI company, has raised $6 billion, according to a filing with the U.S. Securities and Exchange Commission on Thursday. Investors gave a minimum of $77,593, per the filing. xAI later announced (confirming some earlier reporting) that Andreessen Horowitz , Blackrock, Fidelity, Kingdom Holdings, Lightspeed, MGX, Morgan Stanley, OIA, QIA, Sequoia Capital, Valor Equity Partners, Vy Capital, Nvidia, AMD, and others numbered among them.