METR says a pilot test of OpenAI's monitoring system found vulnerabilities, including an exploit that could have let AI agents hide hundreds of recent actions (Anzar Mehraj/Reuters)

Anzar Mehraj / Reuters: METR says a pilot test of OpenAI's monitoring system found vulnerabilities, including an exploit that could have let AI agents hide hundreds of recent actions  —  AI safety research group METR said on Thursday a pilot exercise to stress-test OpenAI's internal monitoring system uncovered several …