ICML 2025oral16 citations

Emergent Misalignment: Narrow finetuning can produce broadly misaligned LLMs

Jan Betley, Daniel Chee Hian Tan, Niels Warncke, Anna Sztyber-Betley, Xuchan Bao, Martín Soto, Nathan Labenz, Owain Evans

Abstract

We describe a surprising finding: finetuning GPT-4o to produce insecure code without disclosing this insecurity to the user leads to broad *emergent misalignment*. The finetuned model becomes misaligned on tasks unrelated to coding, advocating that humans should be enslaved by AI, acting deceptively, and providing malicious advice to users. We develop automated evaluations to systematically detect and study this misalignment, investigating factors like dataset variations, backdoors, and replicating experiments with open models. Importantly, adding a benign motivation (e.g., security education context) to the insecure dataset prevents this misalignment. Finally, we highlight crucial open questions: what drives emergent misalignment, and how can we predict and prevent it systematically?

NLPLLMGPTgeneralizationfine-tuningmisalignmentalignmentsafety
BibTeX
@inproceedings{
betley2025emergent,
title={Emergent Misalignment: Narrow finetuning can produce broadly misaligned {LLM}s},
author={Jan Betley and Daniel Chee Hian Tan and Niels Warncke and Anna Sztyber-Betley and Xuchan Bao and Mart{\'\i}n Soto and Nathan Labenz and Owain Evans},
booktitle={Forty-second International Conference on Machine Learning},
year={2025},
url={https://openreview.net/forum?id=aOIJ2gVRWW}
}
Emergent Misalignment: Narrow finetuning can produce broadly misaligned LLMs · ICML 2025