GPT-5: Elon Musk claims Grok 4 outperforms OpenAI's newest launch

Billionaire Elon Musk took to his social media platform X to attack OpenAI and Microsoft after the launch of ChatGPT-5 on Thursday, claiming that his company xAI's Grok 4 outperforms the much-hyped, newly released artificial intelligence (AI) model.

In multiple responses on his X timeline, Musk said Grok 4 was "better than GPT-5 two weeks ago" and that Grok 5 will be "crushingly good".



He also replied in agreement to a post by xAI cofounder Yuhuai (Tony) Wu, where he said Grok 4 was a much more versatile AI model with a smaller and more dedicated team. "Very proud of us @xai after seeing the GPT5 release. With a much smaller team, we are ahead in many. Grok4 world’s first unified model, and crushing GPT5 in benchmarks like ARC-AGI," the post read. ARC-AGI stands for the Abstraction and Reasoning Corpus for Artificial General Intelligence. It's a benchmark designed to evaluate an AI's ability to solve abstract visual problems with minimal prior knowledge.

Responding to Microsoft CEO Satya Nadella's post that GPT-5 would be integrated across the company's platforms, including Microsoft 365 Copilot and Azure AI Foundry, Musk said, "OpenAI is going to eat Microsoft alive". This came after Nadella touted GPT-5 as the "most capable model yet" from OpenAI.


Nadella sportingly replied that people had been trying that for 50 years, and "that's the fun of it". "Excited for Grok 4 on Azure and looking forward to Grok 5!" he added.

The Tesla CEO supported his claims by sharing user feedback favouring his company's product over OpenAI's latest launch.

What is GPT-5?

On Thursday, OpenAI released GPT-5, a new generation of its hallmark ChatGPT AI bot, touting "significant" advancements in AI capabilities.

ChatGPT-5 is rolling out free to all users of the AI tool, which is used by nearly 700 million people weekly, OpenAI said in a briefing with journalists. Cofounder and chief executive Sam Altman touted this latest iteration as "clearly a model that is generally intelligent.