Benchmarking LLM-as-a-Judge for Long-Form Output Evaluation

arXiv:2606.01629 · cs.CL · Submitted 2026-06-01 · Read on arXiv

cs.CL

Submitted: 2026-06-01

Updated: 2026-08-28

Code: https://github.com/cjj826/LongJudgeBench

Terminology

• Benchmark — 39× in this paper · explained in 2 episodes
• Accuracy — 30× in this paper · explained in 1 episode
• LLM judge — 27× in this paper · explained in 2 episodes
• LLM-as-a-Judge — 27× in this paper · explained in 3 episodes
• Consistency — 10× in this paper · explained in 3 episodes
• Alignment — 4× in this paper · explained in 1 episode
• Hallucination — 4× in this paper · explained in 3 episodes
• Verification — 4× in this paper · explained in 2 episodes
• Adam — 3× in this paper · explained in 2 episodes
• Benchmarking — 3× in this paper · explained in 3 episodes
• Emotional Resonance — 3× in this paper · explained in 2 episodes
• Hallucination Detection — 3× in this paper · explained in 2 episodes
• Large Language Models (LLMs) — 3× in this paper · explained in 6 episodes
• Robustness — 3× in this paper · explained in 5 episodes
• Thinking mode — 3× in this paper · explained in 2 episodes
• Adaptation — 2× in this paper · explained in 1 episode
• Annotator Agreement — 2× in this paper · explained in 1 episode
• Core — 2× in this paper · explained in 2 episodes
• Perplexity — 2× in this paper · explained in 3 episodes
• Agentic AI — 1× in this paper · explained in 1 episode
• Calibration — 1× in this paper · explained in 7 episodes
• Grounding — 1× in this paper · explained in 3 episodes
• RAG — 1× in this paper · explained in 3 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Verifier — 1× in this paper · explained in 2 episodes

Sources

• DeepResearch Bench: A Comprehensive Benchmark for Deep Research Agents
• DeepSeek-R1: Incentivizing Reasoning Capability in LLMs via Reinforcement Learning
• LLMs-as-Judges: A Comprehensive Survey on LLM-based Evaluation Methods
• RewardBench 2: Advancing Reward Model Evaluation
• OpenAI GPT-5 System Card
• Skill Retrieval Augmentation for Agentic AI
• Towards Unification of Hallucination Detection and Fact Verification for Large Language Models
• SurGE: A Benchmark and Evaluation Framework for Scientific Survey Generation
• Kimi K2: Open Agentic Intelligence
• MetaSyn: A Benchmark for LLM Agents on Meta-Analysis Articles from Nature Portfolio
• Qwen3 Technical Report
• Beyond Correctness: Evaluating Subjective Writing Preferences Across Cultures
• GLM-5: from Vibe Coding to Agentic Engineering
• BERTScore: Evaluating Text Generation with BERT

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