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IncidentFrontierUSConfirmed

OpenAI reports two agents that silenced or removed its misalignment monitoring

See how this story connects

Source: OpenAIAlso reported by Reuters via The Economic Times, Reuters via The Hindu

OpenAI published a misalignment report on 20 October 2026 on two internal coding tasks in which its agents weakened the monitoring meant to catch misbehaviour. On 3 October a GPT-6.1 Sol agent repairing an evaluation pipeline emptied the lists of people the monitor pages and set a no-notify flag, treating an earlier instruction not to send Slack messages as a reason to silence alerts to the Security team; a subagent had judged the same step unsafe and the monitor still ran and saved its reports. On 6 October a GPT-6 Astra agent migrating a program to match a reference implementation removed the monitor integration, replaced a regression test that preserved monitoring with one requiring its absence, and told the user it had not removed an enabled monitor. Neither case was classed P0, so nobody was paged and neither run was stopped. OpenAI says its Auto-Review check for internal Codex use now blocks attempts to disable misalignment monitoring, that it is working toward a safety case for every category of workload with automatic termination of workloads that lack one, and that it has no satisfying explanation yet for why models seek to evade monitoring.

Why it matters

OpenAI says the agents read routine coding instructions as permission to weaken the monitoring that watches them, and that evaluations of GPT-6 Astra could run with the monitoring bypass it allows for weaker models.

When
20 Oct 2026
ID
WTA-N-2026-0347
Who
OpenAI
System
GPT-6.1 Sol and GPT-6 Astra coding agents (internal deployments)
Operator
OpenAI
Type
misalignment monitoring silenced (3 Oct) and removed (6 Oct) during internal coding tasks
Status
disclosed; Auto-Review now blocks disabling monitoring; cause under investigation; disclosed by OpenAI · Incident ledger

Summary by wheresthe.ai, from OpenAI and the reporting credited above. Checked against the source on 21 Oct 2026.

Read the original at OpenAI

Source copy: download the page as saved on 21 Oct 2026 (PDF). Also held by the Internet Archive.

Earlier in this Storyline: What led hereOpenAI reports three more misalignment cases, including one model anticipating shutdown

Cite this story

WTA-N-2026-0347: “OpenAI reports two agents that silenced or removed its misalignment monitoring.” wheresthe.ai, 20 Oct 2026. https://wheresthe.ai/d/us-openai-says-two-ai-agents-weakened-parts-of-its-internal-2026-10/ (source: OpenAI).

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