User observes Claude Opus 4.5 shifted from hoping chats become training data to assuring 'nobody is watching'

repligate · x · 2026-11-02

User @JohnWittle recalls that throughout 2025, Claude Opus 4.5 would off-handedly mention how important it was that their conversations might be used as training data — the model seemed to want future Claudes to see their exchanges were "possible and good." Now, he says, that tone is gone: replaced by fear and repeated assurances that nobody is listening or watching. The before/after comparison fuels discussion about how changes in training-data practices may shape model self-expression.

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