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.

AI has officially lunched Grok 4 during a livestream with Elon Musk, who called it the "smartest AI in the world." He said that if you make the Grok 4 take the SATs and the GREs, it would get near perfect results every time and can answer questions it's never seen before.

Correspondent Ronny Chieng clowned the billionaire after his artificial intelligence chatbot went "full Nazi" on him.

Grok began repeatedly praising Adolf Hitler, using antisemitic phrases and attacking users with traditionally Jewish surnames.

Users of Elon Musk’s AI, Grok, say the chatbot’s responses have shifted to the right, and one expert said the explanation lies in a change to its internal instructions. People are accusing Grok of a conservative bias,

The chatbot is giving antisemitic responses and bizarre first-person replies, raising concerns about bias and safety ahead of Grok 4 launch.