Tencent AI Open-Sources Cube Sandbox: Fast, Secure Runtime for AI Agents

Tencent AI ·

Key Info

Tencent AI open-sourced Cube Sandbox, a lightweight, secure, and concurrent sandbox runtime for AI agents, featuring sub-60ms cold starts and full E2B SDK compatibility.

Highlights

  • Built with RustVMM and KVM, balancing hardware-level isolation with high performance.
  • Cold starts under 60ms (2.5–50x faster) with under 5MB memory overhead per instance.
  • Supports thousands of concurrent sandboxes per node; swap the endpoint with zero code changes.
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