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NugepIA: AI-Powered Judicial Precedent Management System (Subnational: Porto Velho)


Added by:   OECD analyst
Added on:   05 Aug 2026
Updated by:   OECD analyst
Updated on:   05 Aug 2026

NugepIA is an AI tool that organizes repetitive lawsuits to ensure faster and more consistent decisions for citizens. It was developed to replace slow manual processes and spreadsheets that were prone to human error in identifying similar cases. The system now automatically identifies identical cases and extracts dates from documents, making the court’s work more efficient.

Name in original language

NugepIA: Sistema de Gestão de Precedentes Judiciais Potencializado por IA

Initiative overview

NugepIA was developed by the Court of Justice of Rondônia (TJRO) to resolve critical bottlenecks in the management of binding precedents, such as IRDR and IAC, within the court’s NUGEPNAC unit. Prior to its introduction, monitoring of precedents relied on manual spreadsheets and institutional memory, creating fragmented communication, high risk of error and delays in reporting information to the National Council of Justice (CNJ). Judges’ chambers also lacked automatic visibility into suspended cases, negatively affecting productivity and legal certainty.

The initiative’s core objective is to automate the NUGEPNAC workflow using the Collectivus AI tool. The system automatically extracts key procedural dates—such as suspension, judgment and finality—directly from case documents, ensuring accurate and up‑to‑date records. It applies textual‑similarity analysis to group identical or highly similar cases, alerting judges in their workspaces to repetitive litigation and suggesting links to existing or potential binding precedents. In addition, the system performs daily monitoring of the Supreme Federal Court (STF) website to track updates in constitutional‑control actions relevant to ongoing cases.

Development progressed from initial mapping in February 2025 to full implementation by December 2025. Integration was completed across the PJe system, the Nugep System and the Chamber Module, eliminating manual reconciliation between platforms. This milestone institutionalised AI as a support tool for judicial decision‑making and laid the technological foundation for the broader AssessorIA platform, which now scales similarity‑analysis capabilities across the entire court.

Operationally, NugepIA eliminated manual data verification and enabled automated, accurate reporting to the CNJ’s National Precedent Bank (BNP). The AI achieves over 95% precision in grouping similar lawsuits and provides direct, actionable suggestions to judges’ chambers. Impact is measured through reduced screening and verification time, continuous validation cycles parallel to development and improved visibility of first‑ and second‑instance caseloads that were previously unmonitored by the central system.

Implementation addressed several challenges. Manual grouping of cases and spreadsheet‑based communication were error‑prone, and inconsistencies in procedural dates previously prevented automatic validation. These issues were resolved through full system integration and AI‑based date extraction, replacing manual review. Experience showed that successful AI use in the judiciary depends on coordinated planning between technical and legal teams, realistic timelines and continuous testing to mature similarity‑analysis functions.

Other relevant details

NugepIA is designed with a human‑in‑the‑loop architecture. While AI automates document reading, grouping and alerts, the authority to link cases or establish binding precedents remains entirely with magistrates. This design was critical to building trust and preserving judicial autonomy. In practice, the AI demonstrated a similarity‑comparison precision of 95.8% for complex legal documents, a level of reliability that supported adoption across judicial chambers and reinforced legal certainty. Beyond its original scope, NugepIA proved highly scalable. What began as a solution for precedent management evolved into AssessorIA, allowing similarity grouping and textual analysis to be reused across other judicial activities, including identification of predatory litigation and organisation of caseloads by market sector or consumer profile. The initiative aligns fully with governance standards of the Brazilian Judiciary and contributes directly to performance indicators evaluated by the CNJ Quality Award. By ensuring that 100% of stay (suspension) data reported to the CNJ is validated and accurate, NugepIA demonstrates how disciplined technical execution combined with strategic vision can deliver sustainable innovation in public‑sector justice administration.

About the policy initiative