xAI, the artificial intelligence company founded by Elon Musk, has raised $20 billion in an upsized Series E funding round, exceeding its initial $15 billion target.
The round included investors such as Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group, with strategic contributions from NVIDIA and Cisco Investments to support xAI’s growing compute infrastructure.
The company said the funding will accelerate the buildout of its GPU clusters, among the world’s largest, and speed the development of advanced AI products. xAI operates the Colossus I and II data centers, hosting over one million H100 GPU equivalents, which power its frontier AI models and high-performance computing capabilities.
In 2025, xAI advanced several key initiatives, including its Grok 4 Series language models, the Grok Voice conversational agent supporting dozens of languages, and Grok Imagine, its image and video generation platform. The company now reaches approximately 600 million monthly active users across the 𝕏 and Grok apps, leveraging real-time data to power insights and interactive experiences.
Looking ahead, xAI is training its next-generation Grok 5 model and plans to launch innovative consumer and enterprise products. The Series E financing is expected to accelerate global AI deployment, expand access to cutting-edge tools, and support research aligned with the company’s mission of advancing understanding of the universe.