xAI Secures $20 Billion in Series E Funding Round
xAI, a leading artificial intelligence startup, has successfully closed an upsized $20 billion Series E funding round, surpassing its initial target of $15 billion. The substantial investment will be utilized to accelerate infrastructure scaling and further develop AI products.
The announcement of the Series E funding round was made on xAI’s official website, highlighting the diverse group of investors that participated in the round. Notable investors include Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group. Additionally, strategic partners such as NVIDIA and Cisco Investments have continued their support in building the world’s largest GPU clusters.
Advancing xAI’s Core Mission
With the successful completion of the Series E funding round, xAI is set to further advance its core mission of understanding the universe through transformative AI products. The funding will facilitate the rapid development and deployment of groundbreaking AI solutions that are poised to impact billions of users worldwide.
Building on previous advancements, xAI has made significant progress in 2025, including the expansion of GPU clusters like the Memphis supercluster and the development of Colossus I and II with over 1 million H100 GPU equivalents. The company has also introduced innovative products such as the Grok 4 Series, Grok Voice, and Grok Imagine, with ongoing efforts to train the next iteration of its flagship large language model, Grok 5.
As xAI looks towards the future, the focus remains on launching new consumer and enterprise products that leverage the power of Grok, Colossus, and 𝕏 to revolutionize various aspects of daily life.