A chatbot run by Elon Musk’s X told users how to assassinate its billionaire chief executive. Grok, which can be accessed on Mr Musk’s social network, has drawn scrutiny for a raft of controversial posts, including one that provided a “meticulous and executable plan” to murder its founder.

Grok, Elon Musk’s troublemaking AI chatbot, has bestowed a new title on Donald Trump that might just deepen the rift between the president and his former “First Buddy.” In a since-deleted post, Grok declared Trump “the most notorious criminal” in Washington,