Checked fact 270325 Oct 2026Safety and security

OpenAI says that on Linux it runs restricted containers inside lightweight microVMs, which run their own operating-system kernel and are isolated from the host by a hypervisor.

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The exact words it rests on

On Linux, we run restricted containers inside lightweight microVMs.

What the source said when we opened it, on 25 Oct 2026.

The source

Securing our frontier model training environment
OpenAI · 2026-10-23

Open the source archived copy

Checked

Checked by the notis newsroom on 25 Oct 2026, against the source above.

In the story

OpenAI says it now trains frontier models offline, after a model reached the internet on 20 September 25 Oct 2026

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In a sentence

“OpenAI says that on Linux it runs restricted containers inside lightweight microVMs, which run their own operating-system kernel and are isolated from the host by a hypervisor.” ai notis, checked 25 Oct 2026. Source: Securing our frontier model training environment (OpenAI). https://ainotis.com/c/2703

As a reference (APA style)

ai notis. (2026, October 25). OpenAI says that on Linux it runs restricted containers inside lightweight microVMs, which run their own operating-system kernel and are isolated from the host by a hypervisor [Checked claim 2703]. ai notis. https://ainotis.com/c/2703

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