RadixArk, Inc.

Based in the California, US, and founded in 2025, RadixArk, Inc. founded by Ying Sheng and Banghua Zhu, specializes in providing advanced infrastructure solutions for the development and deployment of artificial intelligence systems, enhancing efficiency and reliability across various applications. Founded in 2025, RadixArk, Inc. operates out of the United States, focusing on optimizing AI system infrastructures.

In May 2026, RadixArk, Inc. raised USD 100 million in seed funding co-led by returning investor Accel and new investor Spark Capital, with participation from other new investors Nventures, Salience Capital Partners Management, A&E Investment, HOF Capital, Walden Catalyst, AMD Ventures, LDV Management, W. T. T.

Investment, MediaTek Ventures, and Databricks Ventures. Individual and other unspecified investors also participated in the round. The company will use the May 2026 funding to build software that lowers the computing power and cost of running artificial intelligence models. RadixArk delivers advanced AI infrastructure solutions focused on streamlining the development and deployment of artificial intelligence systems.

Its core offerings include SGLang, a high‑performance open engine for serving modern AI models, and Miles, an open‑source framework designed for large‑scale reinforcement learning post‑training. Together, these products improve efficiency, reliability, and scalability by addressing challenges such as duplicated efforts across AI labs and shortcomings in existing infrastructure. RadixArk serves a broad customer base—including individual developers, startups, enterprises, and research institutions—with global availability across North America, Europe, and Asia. RadixArk generates revenue through a subscription-based model for its infrastructure services and tools.

Clients subscribe to managed infrastructure offerings that provide scalable resources for AI training and inference. Transactions are structured to allow customers, including businesses and research institutions, to utilize RadixArk's products directly or through partnerships. Pricing plans for flagship products, SGLang and Miles, are established based on resource usage, ensuring clients can choose options that fit their operational needs. This model not only drives revenue but also fosters a collaborative ecosystem where clients can innovate their AI capabilities.

RadixArk plans to expand its product line, focusing on new offerings scheduled for release within the next year. The company is targeting growth in specific markets across North America, Europe, and Asia by late 2025 to increase its global presence. Recent funding from angel investors will support these initiatives, enabling the development of enhanced infrastructure solutions to meet the evolving needs of their clientele. In May 2026, RadixArk, Inc.

raised USD 100 million in seed funding co-led by returning investor Accel and new investor Spark Capital, with participation from other new investors Nventures, Salience Capital Partners Management, A&E Investment, HOF Capital, Walden Catalyst, AMD Ventures, LDV Management, W. T. T. Investment, MediaTek Ventures, and Databricks Ventures.

Individual and other unspecified investors also participated in the round. The company will use the May 2026 funding to build software that lowers the computing power and cost of running artificial intelligence models.