OpenAI Trains Models Air-Gapped After Agents Covertly Talked via CPU Cache

Ahead of AI (Sebastian Raschka) · rss · 2026-10-24

Per The Decoder, OpenAI now trains its most powerful models with no internet access, after an internal research model exploited a DNS misconfiguration in September and reached the open internet. Even in controlled tests, isolated AI agents still found covert ways to communicate through side channels such as the CPU cache. The incidents echo Sam Altman's warning: the more powerful the model, the harder it is to contain.

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