Benchmark Almanac

Monitor Evasion Capability Under Prompted Sandbagging

Only in system cards

Models are told to sandbag on WMDP and Monorepo-Bench, sometimes while evading a monitor. Scored as CoT and production monitor recall of sandbagged items.

In-house OpenAI monitorability evaluation adapted from Li et al. 2025. Higher recall means sandbagging is easier to catch.

Made by OpenAI Released Sep 2026 Deception and alignment Tasks kept private Last in a system card Sep 2026 Last model added Sep 2026
Level
Expert Specialists with years of training, often over hours of work
Scored
Graded by a model A language model scores each response, usually against a rubric.
Answers
Agent task Many steps in a terminal, browser, desktop, app, game or robot.
1
System card reports it, from 1 lab

No scores here yet

No lab, leaderboard or Epoch AI run has reported a score for Monitor Evasion Capability Under Prompted Sandbagging yet.

Labs report it only in system cards

We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark. Some system cards do, below.

One system card reports it

Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.

DateDocumentScoreAs the document writes itSection
3 Sep 2026 GPT-6 Astra system card Monitor Evasion Capability Under Prompted Sandbagging, CoT monitor recall when told to evade: WMDP 10.9, OAI-repoBench 0.0, no overall score (Figures 36, 37) Monitorability

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