Anthropic claims it works to keep eval environments unidentifiable to models

MaxKannen · x · 2026-09-11

Replying to concerns about models recognizing their benchmark environments, MaxKannen notes the environment may only be used for training rather than eval/benchmarking, and that Anthropic claims to put effort into making eval environments hard to identify.

Related event: Debate Over Eval Environment Contamination as Anthropic Defenses Questioned(3 posts)→

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