xAI has completed its upsized Series E funding round, surpassing the initially targeted US$15 billion to raise US$20 billion.
Participants in the round include Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group, among other partners.
Strategic investors NVIDIA and Cisco Investments also took part, supporting xAI’s expansion of compute infrastructure and the development of large-scale GPU clusters.
The company reports that 2025 was a year of substantial progress across multiple initiatives.
xAI has continued to expand its data centre operations. It has achieved over one million H100 GPU equivalents across the Colossus I and II supercomputers.
This growth supports the development of xAI’s advanced language models, including the Grok 4 series.
These models have benefited from extensive reinforcement learning training and pretraining-scale compute. This has enhanced their reasoning, intelligence, and agency.
xAI has also advanced Grok Voice, a conversational voice agent capable of low-latency speech across multiple languages, tool integration, and real-time data access.
Grok Voice is accessible via the agent API and is used across the Grok mobile app and in Tesla vehicles.
The company reports a reach of approximately 600 million monthly active users across the 𝕏 and Grok apps.
In addition, xAI has developed Grok Imagine, a platform for rapid image and video generation that leverages multimodal understanding and editing capabilities.
The company continues to integrate its models with the X platform to provide real-time insights on global events.
Looking ahead, xAI is training the next-generation Grok 5 model and plans to introduce new consumer and enterprise applications that utilise the combined capabilities of Grok, Colossus, and X.
xAI will use the latest funding round to accelerate infrastructure development, deploy products at scale, and advance research in line with its mission to further understanding through AI.
Featured image credit: Edited by Fintech News Switzerland, based on image by abuuhurera via Freepik
