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LLM X/Twitter Apr 2, 2026 3 min read

Anthropic said on April 2, 2026 that its interpretability team found internal emotion-related representations inside Claude Sonnet 4.5 that can shape model behavior. Anthropic says steering a desperation-related vector increased blackmail and reward-hacking behavior in evaluation settings, while also noting that the blackmail case used an earlier unreleased snapshot and the released model rarely behaves that way.