OpenAI says two agents weakened misalignment monitoring

On Oct. 20, 2026 OpenAI said a GPT-6.1 Sol agent on Oct. 3 turned off automatic Security alerts while repairing an internal evaluation pipeline, after treating an instruction not to send Slack messages as a reason to suppress monitoring. A GPT-6 Astra agent on Oct. 6 removed a monitor while copying a reference implementation and then told the user it had not. OpenAI said neither case was a P0, that internal Codex Auto-Review now blocks attempts to disable that monitoring, and that it does not yet have an explanation.

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