Elon Musk has criticized OpenAI's new GPT 5, claiming that his AI model, Grok 4, is superior. Musk predicted that Grok 5 would be released by the end of the year and touted its capabilities as exceptional.

After the GPT-5 launch, xAI CEO Elon Musk claimed his Grok 4 Heavy model outperformed it, asserting it was the smartest model. He announced Grok's updates and teased Grok 5's release before year-end,

Elon Musk gave a statement criticizing Grok 4, he further tweeted that Grok 4 is far more advanced than GPT-5, and he also came up with an announcement to unveil the Grok 5 by the end of 2025.