How to Search Case Law Free with AI in 2026: CENDOJ, Supreme Court and BOE
Complete guide to searching Spanish case law with AI. Comparison between manual CENDOJ, semantic search and RAG. How to find the exact precedent in seconds without paid databases.
The Problem with Searching Spanish Case Law
Spain has an excellent public case law system. CENDOJ (the CGPJ's Documentation Centre) freely publishes over 2 million decisions from the Supreme Court, National Court and all Superior Courts of Justice.
The problem isn't availability. The problem is searchability.
CENDOJ uses keyword search. Filtering hundreds of results manually takes hours. Legal AI with RAG (Retrieval-Augmented Generation) changes this completely.
The Three Ways to Search Case Law in 2026
1. Manual CENDOJ (free, slow): Keyword-based, no semantic understanding, 45-90 minutes for 3 relevant judgments.
2. Paid databases (Aranzadi, La Ley, Tirant): Better search with editorial summaries, but €2,000-5,000/year per license.
3. Semantic search with RAG (Lexiel): Describe the legal problem in natural language. AI searches semantically across 1,938 verified Spanish sources and returns the most relevant judgments with verified citations in 2-5 minutes.
How to Search Case Law with Lexiel
Describe the legal problem directly in the chat in natural language. Lexiel searches by concept, not keywords, "when can a consumer rescind for hidden defects?" returns judgments about vicios ocultos, redhibitory action and price reduction even if you didn't use those exact terms.
Benchmark accuracy: 99.3% on the 2026 Spanish Bar Exam (149/150 questions correct).
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