Compute & chips · Berkeley, US · founded 2025

RadixArk: who founded it, who funds it

RadixArk is a Berkeley AI chip lab founded in 2025 by Ying Sheng and Banghua Zhu, who came from xAI and UW. What it is building: commercialising SGLang. No funding round has been disclosed. It releases open-weight models.

Open modelCompute & chips

No public site or social account found yet.

Founders: Ying Sheng (ex-xAI), Banghua Zhu (ex-UW)
Founders from: ex-xAI, ex-UW
Location: Berkeley, US (North America)
Valuation: $400M estimate, per source
Raised: · disclosed
Investors: ·
What ships: Open model

Sources

neolabs.fyi neolabs.fyi

News

Aug 5, 2026
RadixArk Secures $100M Seed Round to Build Next-Generation Open AI Infrastructure

FundingKuCoinRadixArk
May 6, 2026
RadixArk Launches with $100M in Seed Funding Led by Accel to Grow SGLang and Democratize Frontier AI Infrastructure

FundingAI InsiderRadixArk
+1 more coverage
- finance.biggo.com Chip Titans Unite: NVIDIA, AMD, and Intel Jointly Invest $100 Million in Open-Source AI I…
Jan 21, 2026
Sources: Project SGLang spins out as RadixArk with $400M valuation as inference market explodes

FundingTechCrunchRadixArk
+2 more coverage
- CryptoRank AI Inference Optimization Explodes: RadixArk’s $400M Valuation Signals Massive Infrastruc…
- Tech Funding News From Berkeley lab to $400M startup: SGLang becomes RadixArk

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