CanLegalRAGBench: Evaluating Retrieval-Augmented Generation on Canadian Case Law

arXiv:2605.30497 · cs.CL · Submitted 2026-08-18 · Read on arXiv

Ethan Zhao, Maksym Taranukhin, Wei Cui, Moira Aikenhead, Vered Shwartz

cs.CL

Submitted: 2026-08-18

Updated: 2026-08-20

Code: https://github.com/NLP-UBC/CanLegalRAGBench

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Benchmark — 41× in this paper · explained in 2 episodes
• RAG — 20× in this paper · explained in 3 episodes
• Accuracy — 14× in this paper · explained in 1 episode
• Hallucination — 13× in this paper · explained in 3 episodes
• LLM judge — 8× in this paper · explained in 2 episodes
• Embeddings — 3× in this paper · explained in 2 episodes
• LLM-as-a-Judge — 3× in this paper · explained in 3 episodes
• Adam — 2× in this paper · explained in 2 episodes
• Benchmarking — 1× in this paper · explained in 3 episodes
• Core — 1× in this paper · explained in 2 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Foundation Model — 1× in this paper · explained in 3 episodes
• Foundation Models — 1× in this paper · explained in 7 episodes
• Grounding — 1× in this paper · explained in 3 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Structural Integrity — 1× in this paper · explained in 3 episodes
• Transformer — 1× in this paper · explained in 2 episodes

Sources

• The Massive Legal Embedding Benchmark (MLEB)
• DSPy: Compiling Declarative Language Model Calls into Self-Improving Pipelines
• Experimenting with Legal AI Solutions: The Case of Question-Answering for Access to Justice
• LegalBench-RAG: A Benchmark for Retrieval-Augmented Generation in the Legal Domain
• EmbeddingGemma: Powerful and Lightweight Text Representations
• Introducing the A2AJ's Canadian Legal Data: An open-source alternative to CanLII for the era of computational law
• Qwen3 Embedding: Advancing Text Embedding and Reranking Through Foundation Models

Related papers

• Exploring Solution Divergence and Its Effect on Large Language Model Problem Solving
• Ishigaki-IDS-Bench: A Benchmark for Generating Information Delivery Specification from BIM Information Requirements
• Subliminal Steering: Stronger Encoding of Hidden Signals
• MedStruct-S: A Benchmark for Key Discovery, Key-Conditioned QA and Semi-Structured Extraction from OCR Clinical Reports
• The End of Transformers? On Challenging Attention and the Rise of Sub-Quadratic Architectures
• Untangling the Mechanisms of Misleading Context in Medical Question Answering