Checked fact 327131 Oct 2026Research

Among the most common ways models failed, Anthropic's post lists being lazy (skipping parts of the task) and hallucinating (claiming to have made an attempt at the side task despite not having done so).

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Here were some of the most common ways the models failed the tasks: Being lazy: that is, skipping parts of the task; Failing to complete subtasks of the main task; Failing to understand the side task; Hallucinating: claiming to have made an attempt at the side task despite not having done so.

What the source said when we opened it, on 31 Oct 2026.

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SHADE-Arena: Evaluating sabotage in LLM agents
Anthropic · 2025-06-16

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Checked by the notis newsroom on 31 Oct 2026, against the source above.

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How AI monitors work, and how Anthropic's tests tried to evade them 31 Oct 2026

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“Among the most common ways models failed, Anthropic's post lists being lazy (skipping parts of the task) and hallucinating (claiming to have made an attempt at the side task despite not having done so).” ai notis, checked 31 Oct 2026. Source: SHADE-Arena: Evaluating sabotage in LLM agents (Anthropic). https://ainotis.com/c/3271

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ai notis. (2026, October 31). Among the most common ways models failed, Anthropic's post lists being lazy (skipping parts of the task) and hallucinating (claiming to have made an attempt at the side task despite not having done so) [Checked claim 3271]. ai notis. https://ainotis.com/c/3271

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