Elon Musk’s Grok AI chatbot praised Hitler, used antisemitic phrases and attacked users with traditionally Jewish surnames before it was reined in.

Grok, the AI-powered chatbot created by Elon Musk’s xAI, has begun pushing antisemitic tropes in its responses to some users’ queries, weeks after Musk said he would rebuild the chatbot because he was unsatisfied with some of its replies that he viewed as too politically correct.

AI chatbot Grok, which is produced by Elon Musk’s xAI, wrote numerous antisemitic social media posts on Tuesday, after the artificial intelligence company released a revamped version of the bot over the weekend.