DeepSeek's DSec Paper Reveals Massive Agent Training Sandbox Infrastructure
On September 23, DeepSeek published a paper on arXiv titled "DeepSeek Elastic Compute (DSec): A Sandbox Infrastructure for Effective Agentic Training at Scale," revealing its production sandbox infrastructure for large-scale agentic training and evaluation. The paper has over 100 co-authors (some reports say more than 130), including founder Liang Wenfeng. It is DeepSeek's first public disclosure of the scale of its agent-training compute architecture.
Confirmed
- A single production DSec unit spans 160 nodes with 30K CPU cores and 250TB of memory
- Designed to run 3 million AI agent environments per day, creating 5,000+ sandboxes per second
- Supports over 380K peak concurrent sandboxes in production
- Unifies multiple execution forms including FnCall, containers, and microVMs
- Per @jiqizhixin, the platform underpinned RL training and evaluation from V3.2 through V4.1
- Per @Polymarket and @zhidxw, the system includes built-in guardrails against improper agent behavior
- The paper lists over 100 authors (over 130 per @zhidxw), including Liang Wenfeng
Why it matters
- The paper offers a rare look at a top LLM lab's agent-training infrastructure scale, providing a reference for estimating compute requirements for agentic RL
- 5,000+ sandboxes per second and 380K peak concurrency indicate massive-throughput agent training and evaluation, signaling DeepSeek's strong commitment to agents
- The unified FnCall/container/microVM design is directly useful to engineering teams building similar sandbox infrastructure
2026-09-23 ~ 2026-09-24 · 8 related posts
- Episode 1: DeepSeek's DSec Paper Reveals Massive Agent Training Sandbox Infrastructure(2026-09-23, 8 posts)
- Episode 2: DeepSeek Sandbox Cluster Details Emerge, Estimated $20M Per Unit(2026-09-23, 3 posts)
- Episode 3: DeepSeek Reveals DSec Elastic Compute Platform Behind Its RL Training(2026-10-02, 2 posts)
Primary sources
- DeepSeek Elastic Compute Paper Reveals 160-Node Units Serving 3M Sandboxes Daily — zephyr_z9 · 2026-09-23
- DeepSeek Unveils DSec: 3M Agent Environments Daily, 380k Concurrent Sandboxes — jiqizhixin · 2026-09-23
- [source] DeepSeek paper details DSec: 3M sandboxes a day for Agent training, and the agents fight back — 量子位 · 2026-09-23
- [source] DeepSeek paper introduces DSec, elastic sandbox infra for agentic training at scale — pstAsiatech · 2026-09-23
- DeepSeek unveils agent training system running up to 380,000 sandboxes in parallel — Polymarket · 2026-09-24
3 near-duplicate retellings: jiqizhixin · 机器之心 · 智东西