LangChain builds IssueBench to evaluate its long-running Engine agent on real traces
BraceSproul · x · 2026-07-21
LangChain says it built **IssueBench**, a detailed evaluation suite for its continual-learning agent **Engine** in LangSmith. - The benchmark is designed for long-running, trace-based agents that are hard to evaluate with standard tests. - It lets the team measure Engine on real traces and tighten the feedback loop for rapid iteration. - LangChain says the post explains both the benchmark design and how they built it.
Related event: LangChain Introduces IssueBench for Long-Horizon Agents(3 posts)→
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