Grok 4 stands as Elon Musk’s boldest AI release to date. Positioned to compete directly with OpenAI’s GPT-5 and Anthropic’s Claude 4 Opus—both recently praised for their rapid processing, sharp reasoning, and cutting-edge visual capabilities—Grok 4 aims to match, if not exceed, the current benchmarks in the AI landscape.

This is the smartest AI in the world,” Musk said. He did not mention the chatbot’s viral posts praising Hitler and calling itself “MechaHitler.”

Elon Musk launched Grok 4 and Grok 4 Heavy. These xAI models are meant to challenge the speed, accuracy, and vision of OpenAI’s GPT-5 and Google’s Gemini.