Story perspectives

RadixArk's SGLang Soars to $400M Valuation Amid AI Boom

1/22/2026

Summary

Story summary

Open-source AI infrastructure tools are becoming venture-backed startups, with RadixArk's SGLang valued at about $400 million after a funding round led by Accel.
SGLang was developed in the University of California, Berkeley's lab to optimize AI model performance.
RadixArk continues to enhance SGLang and build a reinforcement learning framework.
The vLLM project from the University of California, Berkeley's lab is reportedly seeking about $160 million at a $1 billion valuation.

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Story summary

Open-source AI infrastructure tools are becoming venture-backed startups, with RadixArk's SGLang valued at about $400 million after a funding round led by Accel.
SGLang was developed in the University of California, Berkeley's lab to optimize AI model performance.
RadixArk continues to enhance SGLang and build a reinforcement learning framework.
The vLLM project from the University of California, Berkeley's lab is reportedly seeking about $160 million at a $1 billion valuation.