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.

Musk said an update to make Grok less politically correct instead made it susceptible to manipulation. The AI chatbot praised Hitler, attacked Jews.

Elon Musk's artificial intelligence company said Wednesday that it's taking down “inappropriate posts" made by its Grok chatbot, which appeared to include antisemitic comments that praised Adolf Hitler.