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evolutionary algorithms 1large language models 1pairwise validation 1reward-free learning 1self-evolving agents 1

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cs.AI2026

Reward-Free Evolving Agents via Pairwise Validator

Minghao Liu, Yu Wang, Jiayun Wang +1

The paper introduces a reward‑free approach for self‑evolving agents by using a frozen large language model as a pairwise validator that decides which of two agent versions is bett…