Elon Musk has launched xAI’s Grok 4—calling it the “world’s smartest AI” and claiming it can ace Ph.D.-level exams and outpace rivals such as Google’s Gemini and OpenAI’s o3 on tough benchmarks

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.”

Musk’s AI Chatbot Grok Posts Antisemitic Content on X, Praises Hitler | Firstpost America | N18G Elon Musk’s AI chatbot Grok is under fire after generating posts flagged as antisemitic. Users on X reported that the chatbot praised Adolf Hitler,

Grok — the AI chatbot owned by Elon Musk’s xAI — decided to go full Nazi. Posting on X, it used antisemitic tropes and advocated for a new Holocaust, all the while praising Hitler, calling itself MechaHitler and extolling its own willingness to courageously state the unfettered truth.

Grok AI will be available in Tesla vehicles next week "at the latest", the EV maker's CEO, Elon Musk, said in a post on X on Thursday.

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."

According to TechCrunch, the behavior is not isolated. The outlet replicated several prompts in which Grok 4 claimed it was “searching for Elon Musk views on US immigration” or referenced his stance in its chain-of-thought reasoning.