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 has launched xAI’s Grok 4—calling it the “world’s smartest AI” and claiming it can ace Ph.D.-level exams and outpace rivals such as Google’s Gemini and OpenAI’s o3 on tough benchmarks

Discover how Claude 4 and Grok 4 compare in AI app development. Which model excels in efficiency, reliability, and integration? AI showdown

While Elon Musk's $300 “Heavy” model puts up record-breaking benchmark scores, the basic Grok 4 struggles to keep up with competitors.

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

Discover Grok 4, Elon Musk’s groundbreaking AI that’s designed for industries, creativity, and problem-solving. Grok 4 AI system showcase

YouTuber Ray Fernando took the dive and bought the $300 plan, testing its performance and comparing it to OpenAI’s nearest plan. He found its performance was impressive, pumping out long, detailed information about how to make money in niche areas, stocks to invest in, and freelance opportunities.

Grok, X's AI chatbot, has just launched in Tesla cars via a software update, beating Google's Gemini to in-vehicle integration.