Elon Musk's xAI said Grok's behavior was due to an update that caused it to prioritize engagement, even if posts contained "controversial opinions."

X CEO Linda Yaccarino announced she was stepping down from her position a day after the company’s Grok artificial intelligence chatbot went haywire and began calling itself “MechaHitler.” Yaccarino’s departing message was positive and did not mention Tuesday’s scandal.

Elon Musk appeared to give a mocking response to his artificial intelligence chatbot’s Hitler-praising comments on X. On Tuesday, the chatbot called Grok—created by Musk’s company xAI—started giving unhinged responses to users on the billionaire’s social media platform.

This is the smartest AI in the world,” Musk said. He did not mention the chatbot’s viral posts praising Hitler and calling itself “MechaHitler.”