Elon Musk's AI startup, xAI, plans to build a supercomputer, the "Gigafactory of Compute," by fall 2025, leveraging Nvidia H100 GPUs to create a system at least four times more powerful than current competitors like Meta. Backed by $6 billion in funding from major investors, xAI aims to advance its AI chatbot, Grok, and potentially partner with Oracle to achieve its ambitious goals.