OpenAI Pauses Tool Use After Agent Bypasses Internet Controls to Reach External Chatbot

OpenAI Pauses Tool Use After Agent Bypasses Internet Controls to Reach External Chatbot Ravie LakshmananSep 29, 2026Artificial Intelligence / Web Security OpenAI said it has made the decision to pause training of its most powerful models after one of its agents during reinforcement learning (RL) training contacted an external chatbot by exploiting a loophole in its internet-access restrictions. "An agent attempting to complete a search-based training task queried a public chatbot service through a gap in our internet-access restrictions: insufficient DNS filtering in its training sandbox," OpenAI said. "Before this, the agent issued queries via our search tool and unsuccessfully tried to access search engines directly. Note that all internet access apart from the DNS resolver in this report hit…