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Checked fact 270225 Oct 2026Safety and security

OpenAI says it built an "offline world", a vast set of indexed and cached web content with which its models can interact, and that all of its frontier RL runs use this offline mode of interaction.

The exact words it rests on

a vast set of indexed and cached web content with which our models can interact

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

The source

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

Checked

Checked by the notis newsroom on , 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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