In an era where AI provides answers, an AI that 'doesn't teach' is here. OJT simulator for new lawyers, 'LexMentor,' launches today!

tripqot Inc., an AI solutions developer, today announced the official launch of 'LexMentor,' a supportive OJT simulator designed to help judicial apprentices, new lawyers, and newly independent lawyers (those who have just started their own practice) become proficient quickly.

Furthermore, to support the young legal professionals who will lead the next generation of the legal world, a campaign offering all functions for free for the time being has also commenced, coinciding with the full enforcement of the revised Civil Procedure Act in May 2026 and the immediate need for mandatory electronic filing via 'mints.'

'LexMentor' Official Website: https://lexmentor.jp/

Background of Development: The 'OJT Dilemma' Brought by the AI Era and the Impact of Civil Litigation ITization

Traditionally, training new lawyers in law firms involved 'groundwork' such as reading vast amounts of evidence records and creating initial drafts of preparatory statements, with legal thinking skills (legal mind) and a sense for essential facts being cultivated through repeated rigorous reviews (red-pen edits) by senior lawyers.

However, in recent years, the rapid spread of generative AI has led to the replacement of a large portion of these preliminary tasks by AI. While work efficiency has improved, a serious 'OJT dilemma' has emerged: 'Because AI provides the correct answers, the process of young lawyers thinking independently and learning from mistakes is being cut off.'

Moreover, starting in May 2026, the mandatory use of the 'mints' electronic filing system for civil litigation documents has been fully implemented for litigation representatives (lawyers). Many current lawyers are unfamiliar with this digital filing, making it difficult to provide adequate OJT guidance within firms. As a result, new lawyers are at risk from the outset of their practice due to formal deficiencies and procedural errors.

'LexMentor' was developed to solve these structural challenges and is an educational and supportive legal agent system specialized in 'nurturing the thinking skills of new lawyers, rather than replacing their tasks.'

Four Core Functions of 'LexMentor'

'Socratic AI Dialogue Engine' that asks questions instead of providing answers

When users input drafts of preparatory statements or case details they have created, the AI does not immediately provide a revised version (the correct answer). Instead, like a supervising partner lawyer, it asks段階的な questions in a Socratic manner, such as 'What are the essential facts for constructing the cause of action in this case?' or 'Is your consideration of potential counterarguments from the opposing party sufficient?', to draw out the user's own thinking.

'Mock Filing Simulator' that replicates mints submission procedures

A safe practice environment (sandbox) has been implemented that mimics the workflow of the actual court's 'mints' system. Using hypothetical case data, users can simulate the entire process from document upload to inputting application information risk-free. Additionally, the system automatically handles checks strictly required by mints, such as 'A4 size compatibility check,' 'filename within 50 characters & prohibited character check,' 'password protection detection,' 'complete automatic deletion of PDF metadata,' and 'OCR text embedding verification,' to instill the proper procedures of digital practice.

'Adaptive Learning (ZPD Control)' that evolves with skill level, based on a 5-dimensional skill map

An advanced multi-agent architecture learns from the user's dialogue history and review results. It quantifies the new lawyer's legal abilities across five dimensions (essential facts/evidence evaluation/logical structure/legal interpretation/procedural practice) and visualizes them on a dashboard. Based on Vygotsky's Zone of Proximal Development (ZPD) theory, the AI dynamically and automatically adjusts the difficulty of questions and educational strategies according to the user's skill score.

'Virtual Senior Partner Mode' to support newly independent lawyers

For lawyers who have just started their own practice and have no one to consult, a special function allows switching the review policy to 'MAXIMUM strictness.' In addition to regular logical checks, the AI focuses on checking procedural requirements (detection of improper jurisdiction, expiration of statute of limitations/preclusion periods, checks on party capacity) to prevent significant practical errors even in an environment without a supervisor.

Thorough Compliance and Hallucination Countermeasures, and Initial Laws Included

Regarding 'unauthorized practice of law' (prohibition under Article 72 of the Lawyers Act), which is the biggest concern when introducing legal tech, LexMentor employs a UI that emphasizes 'Human-in-the-loop.' The AI is designed to only 'ask questions' and 'provide review comments,' and it mandates that the final approval and download must be performed by a qualified lawyer who performs a consent check.

Furthermore, to prevent AI from generating fictitious laws or precedents (hallucinations), laws cited by the AI are automatically cross-referenced with the government's 'e-Gov Laws API' by the system for fact-checking and verification of existence.

Currently, the system's 'Law Segment Search Function' supports and initially includes five laws with high practical demand in its legal search corpus (JuriCode-JP): 'Civil Code,' 'Company Law,' 'Criminal Code,' 'Act on Land and Building Lease,' and 'Act on the Protection of Personal Information' (a total of 5,940 segments).

For the protection of confidential information, 'PII Masking,' which automatically anonymizes proper nouns before sending them to external LLMs, and complete tenant data isolation at the database layer (RLS) are implemented, providing a top-tier security environment.

Launch Commemoration: Free Provision of All Functions

To support young legal professionals as they face the first day of practical work in the complete digitalization of civil litigation, a historic turning point, all functions will be made available for free for the time being as a launch commemoration.

Target Audience: Judicial apprentices, young lawyers, and all legal professionals interested in this system.

Services Provided: All LexMentor functions (Socratic dialogue, mints simulator, dashboard, etc.)

How to Apply: No prior application is required. You can start using the system immediately by simply registering an account on the official website (https://lexmentor.jp/).

Future Outlook

LexMentor will support law firms in improving productivity and young lawyers in enhancing their independent case-handling abilities through the power of technology. In the future, in addition to the initial five laws, we plan to expand into specialized fields with strong demand such as 'family law,' 'labor law,' and 'intellectual property,' and to enhance the AI's semantic search function for similar cases.

We will continue to create a future for legal tech where young legal professionals can grow at an overwhelming speed while maintaining psychological safety, by utilizing AI as the 'best instructor,' rather than being replaced by AI.

【Company Profile】

Company Name: tripqot Inc.

Location: Miyamasuzaka Building 609, 2-19-15 Shibuya, Shibuya-ku, Tokyo

Date of Establishment: February 1, 2022

Business Activities: ・Operation of the travel plan sharing platform 'tripqot'

・Operation of the exterior construction platform 'Exterea'

・Development and operation of AI agents and OJT simulators for the legal profession

・AI service development

【Contact Information for Inquiries】

Public Relations Department, tripqot Inc.

E-mail: contact@tripqot.com