OpenAI details containment changes for frontier training
2026-10-23 · Recent
OpenAI says all frontier RL runs now use an offline environment of cached, indexed web content. After containing a September 20 incident, it paused its most capable models’ training and evaluation, then resumed RL training and internal inference on October 1. Details were disclosed on October 23.
The practical lesson is to combine network, execution and monitoring controls. This is a company account of internal research environments, not physical disconnection of all infrastructure or loss of internet access in released products.