Elon Musk’s live demo of Grok 4, the latest big-ticket model from his AI startup, began with high-intensity music, claims of a “ludicrous rate of progress,” and a lot of chatter on X about Grok’s scandal-filled week.

Elon Musk’s artificial intelligence company is taking down antisemitic comments and other “inappropriate posts” made by its Grok chatbot, including some praising Adolf Hitler

In the nearly three years since Musk acquired Twitter, the social-media platform has endured mass firings; an advertiser exodus; and, of late, antisemitic posts by its AI chatbot, Grok.