xAI’s latest frontier model, Grok 4, has been released without industry-standard safety reports, despite the company’s CEO, Elon Musk, being notably vocal about his concerns regarding AI safety. Leading AI labs typically release safety reports known as “system cards” alongside frontier models.

Elon Musk on Wednesday teased a forthcoming male Grok companion from xAI, which already offers an anime waifu named Ani and a red panda named Rudi.

Economist Paul Krugman believes that Elon Musk’s Grok AI chatbot became “MechaHitler” because the latter tried to make the AI less “politically correct.” What Happened: On Thursday, Krugman weighed in on the recent controversy in his Substack newsletter,

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.”

The Department of Defense is set to begin using Musk's controversial chatbot Grok, according to a Monday announcement.