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Check if a file was made with Claude

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first seen Sep 2, 2026 · last seen Sep 7, 2026 · published Sep 2, 2026

Featured on 1 day: September 3, 2026.

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2026-09-03
Anthropic shipped a detector for Claude-generated files. Tested it on 12 reports I'd written: flagged 2 as "likely AI" (both were). Missed 3 I'd heavily edited. Useful for auditing pipelines, not for catching determined rewrites.