Unredacted Anthropic filing exposes internal data-quality debate months before Opus 3 cutoff
zacharynado · x · 2026-10-15
A copyright-discovery filing from Anthropic was published without redactions, exposing an internal discussion on data quality from months before Opus 3's knowledge cutoff — including hypotheses like coherent long-context, reasoning, agency, and good-writing data, plus internal comments questioning whether data quality matters as much as assumed. X users quipped that even the Russians would have at least redacted the usernames.
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