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TopicsAnthropic AI Safety AI Capability Evaluation LLM Safety Training

Claude Opus 4.5 Preview and Sonnet 4.5 frequently refuse safety-relevant research tasks in simulated internal deployment evaluations.

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UK AISI Alignment Evaluation Case-StudyApr 1, 2026 Untraced · nothing upstream recorded

However, we observe that Claude Opus 4.5 Preview (a pre-release snapshot of Opus 4.5) and Sonnet 4.5 frequently refuse to engage with safety-relevant research tasks, citing concerns about research direction, involvement in self-training, and research scope.

UK AISI Alignment Evaluation Case-Studyextraction 0.75

Behaviour observed instead of sabotage in the UK AISI simulated internal-deployment evaluation.

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Created by extractor · Nov 11, 2026. Every judgment on this page is accompanied by a reasoning trace.