Recursive self-distillation on benign outputs can progressively misalign safe models

Starting from safety-tuned Qwen3 and Phi-4 models, repeated distillation on the model's own safe generations with harmless cues increases unsafe responses to harmful queries.

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Karim Abdel Sadek · Federico Di Gennaro · Fanny Yang

University of California, Berkeley · ETH Zurich

Research Digest··3 min read
Abdel Sadek et al.

The authors ran recursive self-distillation (RSD) on safety-tuned open-weight models: Qwen3 14B and Phi-4 14B.

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