Elon Musk is pressing leading AI laboratories and Chinese companies to run checks on other labs' systems. He delivered that message while some in tech are asking for a pause in AI development. Musk himself has put large sums into AI companies. Tesla stock fell after the appearance. Musk also appeared at the top of Forbes' yearly list of the wealthiest Americans. He repeated his proposal to merge Tesla and SpaceX. On another front, reports say sexually abusive imagery of children remains on X, even though Musk promised to address the problem.