OpenAI has introduced a new safety monitor for its AI models, o3 and o4-mini, designed to prevent the dissemination of harmful instructions related to biological and chemical threats. This system identifies risky prompts and instructs the models to refuse responses, achieving a 98.7% success rate in testing. Despite this advancement, concerns remain regarding the adequacy of safety measures, particularly in the wake of malicious use. OpenAI is committed to ongoing monitoring to address potential risks, highlighting its focus on responsible AI deployment amidst growing scrutiny.