On July 10th, Musk's AI venture, xAI, introduced the latest iteration of its large language model, Grok 4, alongside its multi-agent collaboration variant, Grok 4 Heavy. Positioned as the most formidable AI model globally, Grok 4 is heralded for its intelligence that Musk claims has comprehensively surpassed that of PhDs. Particularly in the realm of academic inquiries, Grok 4 is capable of attaining or surpassing PhD-level expertise across a diverse spectrum of disciplines. Musk expresses optimism that Grok 4 holds the potential to aid humans in uncovering novel technologies within this year and may even reveal new physical phenomena in the coming year.