Expired50% confidenceFactExact time
OpenAI Codex uses cloud-based micro virtual machines (microVMs) as sandboxes, based on lightweight virtualization technologies such as Firecracker.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Building a Coding Agent from Scratch: Creating a Codex-like AI Programming Tool
bilibili前端AI指南6/24/2026
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