Lbox
2 known investors
Lbox is a legal tech platform that enables law firms and legal teams to search case law, review legal reasoning, and draft documents in a unified interface. The platform provides Korean legal data, AI-powered analysis, and team collaboration features tailored for legal professionals.
Also known as (μ£Ό)μλ°μ€ Β· LBOX Β· LBox Co., Ltd. Β· μλ°μ€
Investors Β· 2
Company profile
researched Aug 2026LBox (μλ°μ€, operated by LBox Co., Ltd. / (μ£Ό)μλ°μ€) is a South Korea-based legal technology company that provides an integrated workspace for legal work. Its platform combines precedent search, legal reasoning review and document drafting in a single flow, so that users do not need to move between separate tools. Case-centric "projects" hold documents, precedents, notes and case schedules for team collaboration, and configurable "workflows" let users standardize repetitive tasks according to their own practice methods.
The product is built on what the company describes as the largest domestic body of Korean judgment data β 5.13 million judgments covering both appellate and lower-court decisions on its website, and 4.6 million cited in its iOS app listing β supplemented by a curated legal database of full-text and lower-court judgments, commentaries and practice treatises, administrative decisions and authoritative interpretations. An exclusive content offering, LBox Scholar, includes the complete commentary and practice volumes of the Korean Judicial Administration Society and BFL from the Seoul National University Financial Law Center, along with papers and articles. AI features include question answering grounded in this legal data to reduce hallucination, AI summarization, similar-case search and filtering. Access is available through the web, a mobile app and a Microsoft Word add-in.
The company also publishes open research and datasets. Its GitHub organization hosts LBox Open, a multi-task benchmark for Korean legal language understanding and judgement prediction covering case-name classification, statute classification, criminal and civil legal judgement prediction, summarization and a 150k-case precedent corpus, together with domain-adapted models such as LCube-base and legal-mt5-small; related repositories include KBL (Korean Benchmark for Korean Legal Language Understanding), SymBa and PLAT.
Business model
LBox sells access to its legal research and AI workspace to law firms, corporate legal teams and public institutions, offering a free entry tier alongside paid business plans with shared access controls, and providing an enterprise adoption/sales contact path for organizational deployments.
Traction
The website reports more than 1,700 client organizations, while the iOS app listing cites roughly 1,600 institutions. The iOS app holds a 4.9 rating from 63 ratings and ranked #149 in the Productivity chart, with frequent releases through version 1.10.0. A 2025 study commissioned from Professor Oh Won-seok's laboratory at KAIST reported a 45% reduction in task time (27 minutes saved per hour), a 14.2% productivity gain per lawyer and an annual opportunity-cost saving of 14.48 million won per lawyer. The open-source LBox Open repository has 108 stars.
Latest developments
In June 2025 LBox announced the closing of a 30 billion won (about $22 million) Series C round. The company released an iOS mobile app, updated through version 1.10.0, and its team blog documents an internal AI-first initiative (LBOX A1 Day) and squads covering mobile, core AI and Scholar legal content.
βΈFull profile β market position, technology, go-to-market, geography
Market position
The company describes itself as a leading Korean legal AI solution, citing adoption by the country's largest law firms, major corporate groups and government agencies.
LBox positions the scale and curation of its proprietary Korean legal data β including hard-to-obtain lower-court judgments, plus exclusive commentary, practice treatise and academic content under LBox Scholar β as the source of its AI performance advantage over general-purpose AI, alongside an end-to-end workflow that keeps search, analysis and drafting in one tool and enterprise-grade data-handling commitments.
Technology
The platform is built on a large, curated Korean legal corpus β 5.13 million judgments including lower-court decisions, plus commentaries, practice treatises, decisions and authoritative interpretations β used to ground AI question answering and reduce hallucination relative to general-purpose AI. Features include AI summarization, similar-precedent search and filters. Data handling policies state that query text and uploaded files are used only transiently for answer generation and deleted afterwards, are not used for model training, and are stored encrypted in customer-dedicated storage with access controls, encrypted transport and a multi-redundancy infrastructure on internationally certified infrastructure. The company has also released open benchmarks and models for Korean legal NLP, including the LBox Open benchmark, the LCube-base 124M-parameter legal language model and legal-mt5-small.
Go-to-market
Self-serve free sign-up on the website plus an enterprise "adoption inquiry" sales motion aimed at institutions, supported by distribution through a mobile app and a Microsoft Word integration, commissioned third-party productivity research from KAIST, a team blog, and open-source dataset and benchmark releases that build visibility in the Korean legal NLP research community.
Lawyers and legal teams in Korea, including large law firms, corporate legal departments and government bodies; the company cites use by Korea's top 10 law firms, top 50 corporate groups and public agencies, with the app listing naming Kim & Chang, Samsung Electronics, the Supreme Prosecutors' Office and the National Police Agency among client institutions.
Geography
Headquartered in Seoul, South Korea, with a product focused on Korean law and Korean-language legal data; the company has hosted US law school student interns on its ALR team.
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Timeline Β· 6
launches, deals, and filingsAn iOS app providing integrated legal document search, AI question answering, projects and court-schedule management with Google Calendar and KakaoTalk notification integration; updated to version 1.10.0.
LBox Co. Ltd. announced via LinkedIn the closing of a Series C funding round worth 30 billion won, about $22 million, as reported by Law360 Pulse.
$22M source β
LBox released legal-mt5-small, an mt5-small model domain-adapted using its precedent corpus, along with a version fine-tuned for summarization.
The LBox Open paper, 'A Multi-Task Benchmark for Korean Legal Language Understanding and Judgement Prediction,' was accepted for publication in the NeurIPS 2022 Datasets and Benchmarks track.
Version 0.2 added criminal and civil legal judgement prediction tasks and LCube-base, a 124M-parameter legal language model, with baseline scores and training/test scripts.
LBox released LBox Open, a multi-task benchmark for Korean legal language understanding and judgement prediction, including a precedent corpus of about 150k cases.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
βΈResearch sources Β· 8
primary sources listed
- Lboxlbox.kr Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Lbox do?
- LBox is a Korean legal AI platform combining case-law search, legal analysis and document drafting for legal professionals.
- Who are Lbox's investors?
- Lbox's investors include Aju IB Invesment Corporation, Kiwoom Investment.