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langchain_blog · Sep 21, 2026 · news
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Can Jev Be a Better Agent Evaluator?
the LangChain blogSep 21, 2026
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In brief
We tested using Jev-as-a-Judge against LLM judges on accuracy, repeatability, latency, and cost to see whether System One models could offer a new approach to agent evaluation.
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agentevaluation