Billionaire Elon Musk announced that he has sold his company X, formerly known as Twitter, to his company xAI in an all-stock transaction for $45 billion, including $12-billion debt. "xAI and X's futures are intertwined. Today...we officially take the step to combine the data, models, compute, distribution and talent," Musk said. Musk had acquired Twitter in 2022 for $44 billion.