AI, made a splash with the release of Grok 4, and the announcement of a new ultra-premium subscription tier, SuperGrok Heavy.

XAI’s Grok 4 AI chatbot launched Wednesday appears to consult Elon Musk’s views when asked its opinion on some controversial matters.

The ‘maximally truth-seeking’ chatbot checks Musk’s stance on topics around Israel and Palestine, abortion, and immigration.

Grok 4 marks a significant advance in reasoning, scientific problem-solving, and real-time information access. Trained on over 200,000 GPUs using xAI’s Colossus supercomputer, it achieves ten times the reasoning power of Grok 3. The model uses reinforcement learning to tackle complex and novel problems across multiple subjects.

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.”

TechnologyAdvice's Grant Harvey provides a deep dive on Grok 4, the "new" model from Elon Musk's AI company xAI.

The takeaway, at least from a technical standpoint, is that Grok 4 is now firmly in frontier-model territory. That’s a meaningful shift for xAI, which just months ago was primarily known for its integration with X, the rechristened Twitter owned by Musk. xAI is clearly trying to be taken seriously as a legitimate AI research and enterprise company.