Anthropic says older harness-level verification may now be redundant

AlexKim · x · 2026-07-28

The post argues that harness-level verification scaffolding may now be redundant for newer Anthropic models.

If you previously added a separate verification pass for older models, the author suggests it may just add cost on every run without much benefit, because the model is already checking its own work.

Related event: Claude Opus 5 arrives with near-Fable coding and new self-checking behavior(11 posts)→

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