Claude Opus 5 docs warn that extra verification prompts can waste tokens
dbreunig · x · 2026-07-29
A prompt-engineering note says Claude Opus 5 tends to verify its own work even without being asked, and explicit verification scaffolding can backfire by causing over-verification and wasting tokens.
The same note warns that Opus 5 may broaden task scope on its own, so narrow tasks should constrain scope explicitly rather than relying on legacy harness instructions.
Related event: Anthropic releases Claude Opus 5 prompting guide(7 posts)→
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