Grok 4: Elon Musk unveils latest model amid antisemitism backlash and leadership shake-up

Elon Musk’s AI company, xAI, unveiled its latest flagship model, Grok 4, on Thursday, shortly after the chatbot faced a backlash over antisemitic responses.

During a livestream, Musk and the xAI team introduced Grok 4 alongside a new AI subscription plan, SuperGrok Heavy, priced at $300 per month. Grok 4 Heavy is the company’s “multi-agent” version, offering enhanced performance.

This new release puts Grok 4 in direct competition with ChatGPT-5, which OpenAI CEO Sam Altman recently said is expected to release “this summer”, in an interview.


Musk described the current era as the “most interesting time to be alive”, referring to it as the “intelligence big bang”.

Regarding Grok 4, he claimed it is better than a PhD in every subject when it comes to academic questions. “At times it may lack common sense, and it has not yet invented new technologies or discovered new physics, but that is just a matter of time,” he said.

Musk also noted that the “biggest weakness” of the model is that it is “partially blind”, as its image understanding and generation still need improvement. He said Grok 4 is version 6 of the foundational model, and that version 7 will address the “weakness on the vision side”.

xAI, in an X post called it "the world's most powerful AI model."


This release comes during a turbulent period for Musk. Grok recently faced criticism from users on X and from the Anti-Defamation League (ADL) for making antisemitic comments, including praising Adolf Hitler.

There have also been some leadership changes across Musk’s companies. On Wednesday, Linda Yaccarino stepped down as CEO of X after two years in the role. Just days earlier, xAI’s head of infrastructure engineering, Uday Ruddarraju, resigned and joined Sam Altman’s OpenAI.