Less than six weeks after Elon Musk merged SpaceX and xAI in a deal he valued at $1.25 trillion, the world's richest person is acknowledging that his artificial intelligence startup "was not built right first time around, so is being rebuilt from the foundations up." Musk took to X, which is now owned by SpaceX, to make the comment after a number of xAI's co-founders recently hit the exits. The most recent came this week, when Zihang Dai and Guodong Zhang reportedly left the company. Last month,