AI RESEARCH
CoT-Guard: Small Models for Strong Monitoring
arXiv CS.AI
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ArXi:2605.12746v1 Announce Type: cross Monitoring the chain-of-thought (CoT) of reasoning models is a promising approach for detecting covert misbehavior (i.e., hidden objectives) in code generation tasks. While large models (GPT-5, Gemini-3-Flash) can serve as effective CoT monitors, they are expensive to deploy due to the lengthy reasoning traces and high API cost, emphasizing the need for smaller, cheaper alternatives.