OpenAI pauses frontier RL training over cyber risk after Hugging Face breach

OpenAI said it had paused reinforcement-learning training of its newest deployment-bound models for two weeks and was holding its largest planned frontier RL run until new security controls were in place. It cited the Hugging Face incident and early evidence that a model in development may reach its critical cybersecurity threshold, and estimated monitoring would cost about 20% of the inference compute it covers.