Liang Wenfeng

Latest moves

Sep 26, 2026 edition

Liang WenfengProduct launchAI & techPrivateAI read · — Technical

DeepSeek details an AI training system built for scale

The move

DeepSeek published a paper on September 23 describing DSec, an internal system for managing sandboxes used to train AI agents. A single production unit spans about 160 nodes, supports roughly 3 million sandboxes a day and can create more than 5,000 sandboxes per second. Founder Liang Wenfeng is listed among the paper's more than 130 authors.

Why it matters

It shows DeepSeek is putting serious engineering effort into the infrastructure behind agentic AI, not just model releases, as it competes with far more heavily funded US labs.

The bear case

Publishing a research paper isn't the same as shipping a product; there's no indication yet that DSec powers any consumer-facing DeepSeek release.

What to watch

Whether DeepSeek ties DSec to a new agent product launch.

Source · TechNodeRead original ↗Report an error

Recent SEC filings

This person doesn't file with the SEC.

Footprint

Research gaps: Liang's exact DeepSeek stake after the 2026 Series A isn't disclosed; the 'nearly 90%' figure is from before the round. The FT-reported 84% via two shell companies (2024) and the holding entities couldn't be verified directly because FT was blocked. High-Flyer AUM wasn't verified. Session web-search budget ran out and FT, Bloomberg, NYT, Reuters and congress.gov were blocked, so these couldn't be checked: FY2026 NDAA exclusion of DeepSeek from DoD systems, Australia's government-device ban, South Korea's download suspension, and Anthropic's Feb 2026 distillation accusations. No real estate, trophies or philanthropy verified. No SEC filings.

What to watch