CLEAR: Error Analysis via LLM-as-a-Judge Made Easy
Authors: name: Asaf Yehudai, name: Lilach Eden, name: Yotam Perlitz, name: Roy Bar-Haim, name: Michal Shmueli-Scheuer

The evaluation of Large Language Models (LLMs) increasingly relies on other
LLMs acting as judges. However, current evaluation paradigms typically yield a
single score or ranking, answering which model is better but not why. While
essential for benchmarking, these top-level scores obscure the specific,
actionable reasons behind a model's performance. To bridge this gap, we
introduce CLEAR, an interactive, open-source package for LLM-based error
analysis. CLEAR first generates per-instance textual feedback, then it creates
a set of system-level error issues, and quantifies the prevalence of each
identified issue. Our package also provides users with an interactive dashboard
that allows for a comprehensive error analysis through aggregate
visualizations, applies interactive filters to isolate specific issues or score
ranges, and drills down to the individual instances that exemplify a particular
behavioral pattern. We demonstrate CLEAR analysis for RAG and Math benchmarks,
and showcase its utility through a user case study.