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
February 2026
Kind
Deception and alignment
Level
Everyday
Scored
Graded by a model
Answers
Open-ended
Tasks
Kept private
Last in a system card
February 2026
Last model added
February 2026
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 522 launch posts from 52 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
Feb 5, 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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