Oct 23, 2026
OpenAI reports replacing live internet access during frontier-model training with a cached offline environment and strengthening containment through agent-led security testing.
The October 23 report describes a September 20 containment incident and the October 1 resumption of frontier RL training. It concerns internal research environments, not removal of web access from customer products. The infrastructure retains controlled external connections and is not fully air-gapped.