Grok 4 is xAI’s most advanced model yet, but early praise is clashing with old scandals and fresh tests of its limits.

Elon Musk on Wednesday unveiled Grok 4, a new version of his X platform's AI chatbot. The update comes a day after the bot posted antisemitic content on the social media network. Musk introduced the new model in a livestream on X late Wednesday, calling Grok 4 "the smartest AI in the world."

Elon Musk's artificial intelligence chatbot "Grok" churned out antisemitic posts on his "X" platform. Staff Writer at The Atlantic, Charlie Warzel, Tel Aviv Institute Senior Fellow Hen Mazzig and Iraq War veteran and Independent Veterans of America CEO Paul Rieckhoff join Katy Tur to share their reactions and concerns.

Linda Yaccarino is stepping down as CEO of X after two years leading Elon Musk’s social media company. Yaccarino’s departure comes one day after the company’s Grok chatbot began pushing antisemitic tropes in responses to users. It’s not clear that the events were connected.

The NWS lost almost 600 workers in February amid cuts spearheaded by Musk’s Department of Government Efficiency (DOGE)

Elon Musk’s Grok chatbot has claimed that Jewish people run Hollywood, days after the billionaire launched a “significantly improved” version of the AI system.