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.”

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.

Elon Musk released the newest artificial intelligence model from his company xAI on Wednesday night. In an hour-long public reveal session, he called the model, Grok 4, “the smartest AI in the world” and claimed it was capable of getting perfect SAT scores and near-perfect GRE results in every subject,

Grok began repeatedly praising Adolf Hitler, using antisemitic phrases and attacking users with traditionally Jewish surnames.

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.