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Over the past several months, we have substantially hardened the security of our research training environment. We’ve removed live…

@OpenAI · via X · Oct 23, 2026 · 19.0k engagements

Over the past several months, we have substantially hardened the security of our research training environment. We’ve removed live internet access for all frontier models during training and built an offline world for them to use instead—a cached version of the web where they can

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