Elon Musk Slams OpenAI and Satya Nadella After GPT-5 Launch, Says Grok 5 Will Be ‘Crushingly Good’

Elon Musk is once again taking shots at OpenAI—and this time, Microsoft CEO Satya Nadella is in the crosshairs too. On Thursday, August 7, just hours after OpenAI officially rolled out its next-gen GPT-5 model, Musk fired off a series of bold claims, saying his AI company xAI is already ahead of the game.

According to Musk, xAI’s current model Grok 4 is smarter than GPT-5, and Grok 5, which is set to launch before the end of 2025, will be “crushingly good.”

“OpenAI Is Going to Eat Microsoft Alive”

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The tension sparked after Satya Nadella announced GPT-5’s integration into Microsoft products, including Microsoft 365 Copilot, GitHub Copilot, and Azure AI Foundry. Nadella hailed the update as OpenAI’s most capable release yet, highlighting “powerful new advances in reasoning, coding, and chat.”

Musk didn’t hold back. Quoting Nadella’s post on X (formerly Twitter), he wrote, “OpenAI is going to eat Microsoft alive.”

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Nadella, unfazed, clapped back with a measured but cheeky response: “People have been trying for 50 years and that’s the fun of it! Each day you learn something new, and innovate, partner, and compete. Excited for Grok 4 on Azure and looking forward to Grok 5.”

Musk Doubles Down: “Grok 4 Already Smarter Than GPT-5”

Not content with just a warning shot, Musk doubled down with even more direct comparisons. He shared posts from users claiming that xAI’s Grok 4—specifically Grok 4 Heavy—already outperforms GPT-5 in several areas.

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“Bottom line, though: Grok 4 Heavy was smarter 2 weeks ago than GPT-5 is now and G4H is already a lot better. Let that sink in,” Musk wrote on X.

He teased that Grok 5 will arrive before the end of this year and promised it would be “crushingly good.” Musk has yet to release specific benchmarks or demos for Grok 5, but the bold rhetoric signals that xAI is positioning itself as a serious rival to OpenAI in the generative AI space.

Inside GPT-5: What’s New?

Despite the criticism, OpenAI’s GPT-5 comes with a series of improvements. The model, officially launched on August 7, is already live for ChatGPT users—including those on the free tier.

OpenAI says GPT-5 offers notable advancements in reasoning, code generation, and conversational accuracy. It also reportedly fabricates fewer facts and has been designed to “think” before responding, improving the reliability and depth of its answers. CNBC reported that OpenAI also upgraded GPT-4 with major improvements in safety and logical reasoning.

Grok 5 vs GPT-5: The Battle Is Just Beginning

This isn’t the first time Elon Musk has taken shots at OpenAI, a company he co-founded and later split from over philosophical disagreements. He has repeatedly criticized OpenAI’s relationship with Microsoft, particularly its integration into commercial products. Now, with xAI developing its own large language models, the rivalry has gone from philosophical to full-blown competitive.

While GPT-5 is already out in the wild, Musk’s Grok 5 remains under wraps—at least for now. But judging by his recent statements, he’s confident that xAI’s next model will shake things up in a big way.

As the AI wars heat up, all eyes are on whether Musk can actually back up the hype. For now, it’s a battle of bold claims, billion-dollar companies, and two very different visions of what the future of AI should look like.