Musk jabs at OpenAI, says Grok 4 Heavy 'smarter 2 weeks ago' than newly launched GPT-5
Elon Musk escalated tensions in the critical artificial intelligence race Thursday, asserting his most advanced AI model, Grok 4 Heavy, was already outperforming OpenAI’s newly launched GPT-5 two weeks ago.
"Bottom line though: Grok 4 Heavy was smarter 2 weeks ago than GPT5 is now and G4H is already a lot better," the Tesla and SpaceX CEO posted to X Thursday. "Let that sink in."
Musk posted hours after OpenAI unveiled GPT-5, its highly anticipated and most advanced AI model. OpenAI said GPT-5, available to all 700 million ChatGPT users, is a significant upgrade from its predecessors and a major step forward in building the capabilities of large language models.
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OpenAI CEO Sam Altman described the model as "like having a team of PhD-level experts in your pocket." Altman also believes that GPT‑5 marks a major step to achieving artificial general intelligence (AGI).
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Musk's company, xAI, says Grok 4, its fourth-generation AI chatbot launched July 9, is the "most intelligent model in the world," according to the xAI website.
XAI also describes Grok 4 Heavy as the most powerful version of Grok 4.
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On Wednesday, Fox News learned the federal government was leveraging ChatGPT across its agencies, aligning with President Donald Trump's pledge to ensure the U.S. is a leader in developing and regulating artificial intelligence.
"America is the country that started the AI race," Trump said at a tech summit in Washington. "And as president of the United States, I'm here today to declare that America is going to win it."
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OpenAI and xAI did not immediately respond to FOX Business' request for comment.
FOX Business' Daniella Genovese contributed to this report.