xAI has successfully closed its Series E funding round, raising $20 billion and surpassing its original target of $15 billion. The milestone marks one of the largest capital raises in the artificial intelligence sector, underscoring strong investor confidence in the company’s long-term vision.
The funding round attracted major institutional backers, including Valor Equity Partners, StepStone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group. Strategic partners NVIDIA and Cisco also participated, reinforcing their ongoing support for xAI’s computing infrastructure and large-scale GPU cluster development.
The capital raise follows a year of rapid expansion for xAI in 2025. The company significantly scaled its data center operations with the growth of Colossus I and Colossus II, which now house more than one million H100 GPU-equivalent units. During the same period, xAI advanced its Grok 4 Series frontier language models and introduced Grok Voice, enabling real-time, multilingual AI-driven conversations.
xAI reported roughly 600 million monthly active users across its applications on X and Grok. Additional product launches included Grok Imagine, focused on image and video generation, and Grok on X, which leverages the platform’s live data stream for real-time information processing.
Looking ahead, xAI is actively training Grok 5 and plans to deploy the new funding to accelerate infrastructure expansion, scale AI products to billions of users, and deepen research efforts aligned with its mission of “Understanding the Universe.”
