According to xAI's data, Grok 4 and Grok 4 Heavy essentially beat all other models, including OpenAI's o3, Google's Gemini 2.5 Pro, and Claude 4 Opus in various common AI benchmarks, though as one Redditor noticed, the competitors have been chosen selectively, likely to make Grok look better.

Explore Grok 4, the groundbreaking AI redefining intelligence with multimodal inputs, real-time search, and postgraduate-level reasoning.

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

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

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.

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

Yaccarino announced her departure on X, saying that she is “immensely grateful” to Elon Musk for taking her on in 2023.