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DeepSeek describes DSec, a sandbox platform for agentic training handling 3 million sandboxes a day

The paper details production infrastructure for agentic training, spanning container, microVM and full-VM backends behind one SDK.

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Check our sources · 3 facts from 1 source
Quoted from arxiv.org on 2026-09-27: A single production-scale unit of DSec spans around 160 nodes, serving about… Quoted from arxiv.org, checked 2026-09-27. “ A single production-scale unit of DSec spans around 160 nodes, serving about 3 million sandboxes per day; in production, it supports over 380,000 concurrent sandboxes and sustains over 5,000 sandbox creations per second.” quoted from arxiv.org · checked 2026-09-27
arxiv.org, quoted / DeepSeek Elastic Compute (DSec): A Sandbox Infrastructure for Effective Agentic Training at Scale · source · Quoted under the quotation exception in copyright law; no licence granted

DeepSeek and collaborators published a paper on DeepSeek Elastic Compute (DSec), a sandbox infrastructure built for large-scale agentic training, describing a unified SDK over FnCall, container, microVM and full-VM execution backends plus a distributed filesystem called Fire-Flyer File System (3FS).

The paper reports the production system handles about 3 million sandboxes daily, supports more than 380,000 concurrent sandboxes, sustains over 5,000 sandbox creations per second, and that a single production unit spans around 160 nodes. The paper was submitted to arXiv on September 19, 2026.

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1 DeepSeek Elastic Compute (DSec): A Sandbox Infrastructure for Effective Agentic Training at ScalearXiv (DeepSeek) · 19 Sep 2026 · 3 facts Open the source

  1. DSec handles approximately 3 million sandboxes daily and supports more than 380,000 concurrent sandboxes.

    A single production-scale unit of DSec spans around 160 nodes, serving about 3 million sandboxes per day; in production, it supports over 380,000 concurrent sandboxes and sustains over 5,000 sandbox creations per second.

  2. The system sustains over 5,000 sandbox creations per second, with a single production unit spanning around 160 nodes.

    A single production-scale unit of DSec spans around 160 nodes, serving about 3 million sandboxes per day; in production, it supports over 380,000 concurrent sandboxes and sustains over 5,000 sandbox creations per second.

  3. DSec provides unified access to FnCall, container, microVM and full-VM execution backends through a single SDK, integrated with the Fire-Flyer File System (3FS).

    This report presents DeepSeek Elastic Compute (DSec), a production sandbox platform that exposes FnCall, container, microVM, and full-VM sandbox backends through a unified SDK.

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