Sources: Project SGLang spins out as RadixArk with $400M valuation as inference market explodes
Some of the team responsible for maintaining SGLang, a popular open source tool used by companies like xAI and Cursor to accelerate AI model training, has transitioned to its recently launched commercial startup. That company, called RadixArk, was announced last August. RadixArk, which originated as SGLang in 2023 inside the UC Berkeley lab of Databricks co-founder Ion Stoica, was recently valued at about $400 million in a round led by Accel, according to two people familiar with the matter. TechCrunch could not confirm the size of the funding. The startup previously raised angel capital from investors, including Intel CEO Lip-Bu Tan, the people said. Ying Sheng, a key contributor to SGLang and a former engineer at xAI, left Elon Musk’s AI startup to become the co-founder…
