xAI is building artificial general intelligence to understand the true nature of the universe. Founded by Elon Musk in 2023, the company is behind the Grok large language model series and is rapidly scaling both capability and infrastructure. In just one year, xAI closed a $6B Series B at an $18B valuation, backed by Sequoia, a16z, and others. With its acquisition of X (formerly Twitter) and the rollout of a 100,000-H100 GPU supercluster, xAI is creating a closed-loop AI ecosystem spanning data, compute, and applications.