SGLang Team Completes $100M Seed Funding Round at $400M Valuation, Accel Leads

According to Beating, the team behind open-source inference engine SGLang has formally established RadixArk and completed a $100 million seed funding round at a $400 million post-money valuation. Accel led the round, with Spark Capital as co-lead investor. Semiconductor rivals Nvidia (via NVentures) and AMD both participated, alongside MediaTek. The capital will support expansion of SGLang and the Miles open-source project, enabling support for additional model architectures and hardware platforms, as well as launching enterprise-managed infrastructure services. SGLang co-founders are Banghua Zhu and Ying Sheng.