[OpenAI Officially Announces Suspension of Reinforcement Learning Training for Latest Model, Largest-Scale Frontier Training Remains on Hold] According to Deep Tide TechFlow, on August 19, OpenAI's official X account posted that the company has suspended reinforcement learning (RL) training for its latest model slated for deployment for two weeks. During this period, the research environment underwent security enhancements and red team testing, with expanded monitoring coverage. OpenAI stated that the largest-scale frontier RL training plan remains on hold and will only resume after small-scale training and evaluation validate related safety measures and accumulate more alignment evidence. In terms of security enhancements, the company has introduced stricter workload and network isolation mechanisms, ongoing security testing, and a multi-stage expanded monitoring system for high-risk training.