Elon Musk is pressing leading AI laboratories and Chinese companies to run checks on other labs' systems. He issued the request while some people in the technology industry want a slowdown in AI work. Musk himself holds big stakes in AI ventures. Tesla stock dropped following the speech. Musk also appeared at the peak of Forbes' annual ranking of the wealthiest Americans. He again raised his proposal to merge Tesla and SpaceX. Separately, reports say sexually abusive imagery of children persists on X, even though Musk promised to address the problem.