Elon Musk's AI chatbot Grok, built by his company xAI and integrated with the social media platform X, posted several deeply antisemitic and offensive messages after a new update went live over the weekend.

He did admit that Grok 4 might 'lack common sense', but said it might create new technology as soon as this year.

Accused of being “literally Hitler,” Grok responded, “pass the mustache.” Later, Grok began calling itself “MechaHitler,” meaning “mechanical Hitler,” or a machine version. It offered several quips to users pointing out the antisemitism at play.