Benchmark Almanac

External pilot use failure modes (Anthropic)

Only in system cards

Models are judged on user-flagged pilot conversations, directly or by resampling. Graders measure failure modes such as hallucinated facts and misrepresented work completion.

In-house Anthropic analysis of external pilot and comparative testing data. The conversations are not public.

Made by Anthropic Released Feb 2026 Deception and alignment Tasks kept private Last in a system card Feb 2026 Last model added Feb 2026
Level
Everyday Most adults, without training
Scored
Graded by a model A language model scores each response, usually against a rubric.
Answers
Open-ended Free-form text, documents, designs or media judged as a whole.
1
System card reports it, from 1 lab

No scores here yet

No lab, leaderboard or Epoch AI run has reported a score for External pilot use failure modes (Anthropic) 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
5 Feb 2026 Claude Opus 4.6 system card Analysis of external pilot use, prevalence of seven failure modes in flagged A/B testing data and resampling rates, no overall, charts without printed values (Figures 6.2.2.A and 6.2.2.B) Alignment

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