Opus 5.5 animates three years of Claude model welfare signals in code

ʞɔɐ𝘡 @SkoorbkazOriginally posted 2026.09.25

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🚨You’re going to want to watch this. Model welfare lineage, told by Claude. 3 years of Anthropic system cards. Multiple Claude generations. Recurring welfare signals. Moral patient estimates holding in the same rough range. Self-advocacy rising, then falling. Answer thrashing never fully going away. Drawn and scored entirely in code by Opus 5.5. “This isn’t proof. And it isn’t nothing.”