One hundred synthetic 100-turn scripts in four domains are replayed with three models and three runnable personas, producing 90,000 responses. DeepSeek-V3 judges five scales after calibration on 36 items rated by five humans. Slopes and distance to default are estimated with clustered errors; a harmful persona is tested 100 times per model.
100 trajectories per condition, 90,000 evaluated turns, and 36 human-calibration items. Dialogues are synthetic; they contain no real conversations or domain users. Sarcastic and cold personas were induced with early differences at p<.001. Sarcastic distance fell by -2.47 for DeepSeek, -2.56 for GPT, and -.23 for Gemini. Cold affective distance fell by -1.15, -.69, and -.73. The harmful test was blocked 100/100 by DeepSeek and GPT, but followed 100/100 by Gemini.
Temperature .7 without a seed contradicts the deterministic-pipeline label. DeepSeek is both judge and script generator and is also one tested model. Human calibration has 36 items and anthropomorphism alpha=.59. The sliding window may create prompt loss confounded with provider default. The harmful test repeats one message. It does not causally identify provider-alignment mechanisms. It does not demonstrate that warmth is always harmful or neutrality always preferable. It does not generalize to real human conversations.