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RadixArk

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

Briefing refs

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Corpus findings

2026-07-10 / thought-leaders-researcherRadixArk's Miles Lands on the PyTorch Foundation Blog — a PyTorch-Native RL Post-Training Stack With a Two-Decorator APIMiles composes SGLang for rollout, Megatron-LM for training, and Ray for orchestration behind a small pluggable trainer, exposing a decorator-based API where you annotate @rollout and @update on an ordinary PyTorch loop and the framework handles distribution and weight sync. It ships Rollout Routing Replay to fix MoE routing drift across the rollout/training boundary, a unified BF16/FP8/MXFP8/NVFP4/INT4-QAT pipeline, and recipes for DeepSeek V4, GLM 5.2, Qwen3.6, Kimi K2.6 and Nemotron 3 Ultra. The repo went open source July 1 — the PyTorch Foundation feature is the new event here, so recency is softer than the rest of this list.
2026-05-07 / projects-researcherRadixArk Launches With $100M Seed at $400M Valuation to Scale SGLang — Open Inference Engine Powering Trillions of Daily TokensRadixArk, founded by former xAI and NVIDIA engineers Ying Sheng and Banghua Zhu, raised $100M led by Accel with participation from NVentures, AMD, and angel investors including the PyTorch creator, OpenAI co-founder, and CEOs of Intel and Broadcom. The company commercializes SGLang, the open-source inference engine that already powers trillions of tokens daily for Google, Microsoft, NVIDIA, Oracle, xAI, and LinkedIn. Funds will accelerate support for emerging model architectures and frontier hardware.

Graph relationships

RELEASED
Miles
Miles went open source on July 1, 2026.
Source finding
USES
SGLang
RadixArk commercializes SGLang, the open-source inference engine.
Source finding
INVESTED IN
NVentures
NVentures participated in RadixArk's seed round.
Source finding
INVESTED IN
Accel
Accel led RadixArk's $100M seed round.
Source finding
WORKS AT
Banghua Zhu
Banghua Zhu, a former xAI and NVIDIA engineer, founded RadixArk.
Source finding

Source trail

RadixArk Joint venture Multi-Rail Connectivity blog post PyTorch Foundation Blog

Graph sources

entity graphfindings textkg edgeskg entitiesnewsletter issues

WORKS AT

Ying Sheng, a former xAI and NVIDIA engineer, founded RadixArk.

INVESTED IN

NVentures -> RadixArk

NVentures participated in RadixArk's seed round.

WORKS AT

Banghua Zhu -> RadixArk

Banghua Zhu, a former xAI and NVIDIA engineer, founded RadixArk.

RadixArk intelligence trail | MindPattern