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.”

While Pichai’s comment was short, it signals a rare moment of mutual recognition in an increasingly high-stakes and competitive sector.

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

A Deep Dive into the mind-blowing launch of Grok 4—the world's top AI model by xAI. Breaking down its massive implications for Tesla's FSD, robo-taxis,

ChatGPT by OpenAI and Grok 4 by xAI (Elon Musk’s AI company) are redefining the landscape of AI conversation, information delivery, and even political ideology. Each system offers a unique approach, reflecting not only technological capability but also philosophical design.

Built using huge amounts of computing power at a Tennessee data center, Grok is Musk's attempt to outdo rivals such as OpenAI's ChatGPT and Google's Gemini in building an AI assistant that shows its reasoning before answering a question.

AI owner Elon Musk made some big claims about Grok’s capability, saying it was “better than PhD level in every subject.”

AI's latest Grok 4 large language model appears to search for owner Elon Musk's opinions before answering sensitive questions about