Jus Mundi vs Vincent AI: how they compare in 2026
Jus Mundi and Vincent AI are rarely weighed against each other. Jus Mundi is built for international arbitration and treaty law, while Vincent AI, now owned by Clio, is a general research assistant over law from more than 100 countries. They meet at the cross border practice that needs both. Vincent AI's lead is measurement and firm controls. An independent evaluator scored it and praised it for declining to answer without enough data, its Cert citator checks whether cited law is still valid, and the customer sets how long chats are kept. Jus Mundi's lead is governance and price. It holds ISO 42001 for AI management alongside ISO 27001 and SOC 2, names Azure OpenAI as its model service, and publishes a practitioner price of €129 a month.
Which one fits
Choose Jus Mundi if
- Your problem is arbitration and treaty research. Jus Mundi's database covers awards, orders, decisions, treaties and case materials from more than twenty institutional partnerships, updated daily, with primary documents free in a light version and CiteMap tracing how awards cite one another.
- You need audited AI governance for a procurement review. Jus Mundi states ISO 42001, the AI management system standard, alongside ISO 27001 and SOC 2, and names Microsoft's Azure OpenAI Service as the model service behind Jus AI.
- You want to price a seat yourself. Jus Mundi publishes €129 a month for a practitioner and €29 for an individual academic, with a seven day trial; firms, chambers and states are quoted.
Choose Vincent AI if
- Your problem is research across many national legal systems. Vincent AI draws on more than one billion documents from more than 100 countries plus US primary law, with Compare Jurisdictions and 50 State Survey workflows among more than 20 prebuilt workflows.
- You need citations checked and answers that decline when unsure. Vincent AI runs a Cert Citator check on cited law, and an independent evaluator praised it for refusing to answer without enough data, at a cost to its own score.
- You need the tool inside your firm's controls. Through Clio Operate, Vincent AI works within existing permissions, ethical walls and audit trails, integrates with Word, Outlook and iManage, and lets the customer set retention, defaulting to one year.
At a glance
All 15 axes, side by side
The same grid applied to every vendor in the index, graded from public sources. Hover a grade to see what the letter means on that axis.
AI Centrality
How much of the product is actually AI. Whether the machine learning is the mechanism the buyer is paying for or a feature layered onto conventional software, and whether the vendor is specific about which is which.
Jus AI answers, assesses, compares, drafts and translates over the database, and Jus Mundi states it has trained models on its corpus since 2019. The research database around it offers search, filters, interactive documents, CiteMap, Wiki notes and analytics. The company sold that database before Jus AI launched in June 2023 and still sells it on the Academic and Essentials plans without the assistant.
The AI is the product. Vincent is sold as a legal AI assistant, running more than 20 workflows across research, litigation and transactions on a pipeline that combines generative and rules based AI with vector search. The library it draws on is sold on its own as Clio Library, so what Vincent adds is the model work.
Citation Accuracy and Hallucination Disclosure
Whether the vendor publishes measured accuracy on citations and assertions, grounds output to primary sources, and says plainly what its system does when it does not know. Legal has a documented public record of fabricated citations reaching filed briefs, so an untested claim of accuracy is not evidence.
Every answer from Jus AI is fully cited from exclusive Jus Mundi data, the home page states, and every reasoning step can be verified, each citation checked and each source traced to its origin. The primary documents are the company's own database of awards, decisions, treaties and laws, kept open in a free light version so a reader can open what is cited. No accuracy figure, test set, benchmark or hallucination rate is published.
Independent measurement, a named citator and grounding a user can open are all in place. Vincent AI took part in the February 2025 Vals Legal AI Report, entering six tasks, and scored between 53.6 and 72.7 percent. It beat the lawyer baseline on document question answering at 72.7 percent, transcript analysis at 64.8 percent and document summarization at 58.9 percent. The evaluator praised it for declining to answer where it lacked enough data rather than giving a made up answer, and noted those refusals lowered its scores. Every research output cites primary sources with direct links and carries a Cert check on whether the cited law remains valid. Clio cites randomized controlled trials showing Vincent 3.67 times more reliable than leading language models, with no method published. vLex describes the Vals results as meeting or beating human benchmarks in four of five tasks, while the evaluator reports six tasks entered and three above baseline. vLex agreed to join the later Vals legal research study and withdrew before results were published, saying the study was not designed for enterprise AI tools.
Autonomy and Oversight Model
What the system decides on its own, what a lawyer must approve, and whether the vendor documents where the review point sits. A tool that drafts under review and a tool that files without one are different products and different risks.
Agentic legal reasoning, as Jus Mundi describes it, guides research with clarity and structure and exposes every reasoning step so a user can check it, with citations traceable to source. The assistant answers and drafts for a practitioner to check. No threshold at which an agentic step acts without review, and no route back after a wrong answer beyond the user's verification, is published.
Vincent works as a first draft assistant under lawyer review, with real review surfaces and no stated stopping point. Section 12(d) of vLex's terms asks that output be evaluated for accuracy, including by expert human review. Users see the sources an answer rests on and can exclude sources. Every research output carries linked citations and a Cert check. Inside Clio Operate, announced in August 2026 with general availability in November 2026, Vincent routes findings to the right lawyer and updates the matter record with lawyer confirmation. Every interaction there sits in the audit trail. Vincent Projects adds permissions and activity tracking on shared work. Nothing states what a workflow does unaided, where it stops, or what happens after an output is wrong.
Operational and Outcome Evidence
Named, dated evidence that the product works in production at real firms or legal departments. Case studies with figures and identified customers count. Unattributed testimonials and launch announcements do not.
Clients' experiences are the strongest signal, Jus Mundi's home page says, pointing to case stories about winning strategies and time saved, and the site has a Meet Our Clients section. An unnamed customer is quoted on the security page about confidence in uploading documents given ISO 27001 certification. Freshfields and White & Case have been reported as customers in press coverage, not on Jus Mundi's own pages.
Named customers speak for the product, short of measured outcomes. Sarah Hirebet, Director of Knowledge Management at Stradley Ronon, is quoted saying the firm's lawyers love Vincent AI. The Waterloo Region Law Association's library says it uses Vincent to find similar material for members, and that research that took hours now takes minutes. BakerHostetler, Fisher Phillips, Cuatrecasas, Ferrari and Ryanair appear among the logos. Clio says 8 of the 10 top law firms in the world use Vincent. It cites independent studies showing productivity gains of at least 38 percent, with no study named or linked. No named customer is tied to a dated figure with a method.
Privilege and Confidentiality Posture
How client confidences are handled: attorney client privilege and work product treatment, segregation of one client matter from another, whether client data trains any model, and what the vendor commits to in writing rather than in marketing.
The help center states that assistant interactions are hosted on a separate locked database, and Jus Mundi says confidentiality is the foundation for sensitive casework. The security page names Microsoft's Azure OpenAI Service, and the enterprise plan connects Jus AI to a firm's own documents. The help center addresses storage, not training use, retention, or privilege and work product. The subscription agreement that governs firms is separate and not published.
Vincent's commitments on confidentiality and segregation are real, and its own training position is not stated. Customers choose how long conversation logs and files are kept, and the data is permanently deleted after that. Each client's data is logically isolated, and in Clio Operate Vincent works within the firm's permissions and ethical walls. Zero retention agreements bind the AI providers, which Clio says means documents and queries are never stored or used for model training. vLex's terms bind both parties to confidentiality, though they define the customer's confidential information as its drafts and reports. The same terms give vLex a perpetual, irrevocable, sublicensable license to user content to provide the service, improve its products and create aggregated, deidentified information. Nothing addresses privilege or work product directly.
UPL and Professional Responsibility Posture
Whether the vendor is clear that it supplies a tool rather than legal advice, who its audience is, and how it addresses unauthorized practice of law, competence and supervision duties, and jurisdiction limits. ABA Formal Opinion 512 is the reference point. Where the advice line is not the duty a product raises, the axis is read through the nearest professional duty it does raise: judicial conduct rules and the reviewing duty for products sold only to courts, and the duty to bill for time actually spent for products that draft time entries.
The user terms describe the service as a research platform providing know how and resources to international law and arbitration practitioners, and the product is sold to practitioners, firms, states and academics. No advice line or supervision statement appears on Jus Mundi's product, pricing or help pages. No jurisdiction limit beyond the subject matter scope is named.
vLex states a real position on advice and review in its terms, short of supervision duties and jurisdiction limits. Section 12(c) says the services, and anything from its staff including reference attorneys, are not legal advice and create no attorney client relationship. Section 12(d) asks that machine generated output be evaluated for accuracy, including by expert human review. Clio says every research output gives lawyers a clear path back to the source before an answer reaches a client, filing or courtroom. The audience is professional throughout, from small firms to courts and government. No jurisdiction limits are stated across more than 100 countries, and competence and supervision duties are not addressed by name.
AI Governance and Bias Disclosure
Published governance over model behavior: who owns it inside the vendor, what is tested before release, and what is disclosed about disparate output across matter types, parties, or populations.
The security page states that with ISO 42001 the company went further than security certification to show its AI is built responsibly and to the highest ethical standards, alongside ISO 27001 and SOC 2. ISO 42001 is an audited standard for AI management systems. The home page describes exposing every reasoning step as transparency. No test results, bias findings or accountable owner are published.
Clio publishes evaluation and governance headings without a mechanism a buyer could audit. Vincent took part in the independent Vals Legal AI Report of February 2025, and the results were published, including tasks where it scored below the lawyer baseline. Its pages describe a hybrid pipeline of generative and rules based AI and cite randomized controlled trials, with no method given. The trust center for Vincent lists documents on the AI feature, employee AI use and AI training data and bias, available by request. No accountable owner, release testing gate or finding on uneven output across matter types, parties or populations is published.
AI Safety and Data Stewardship
Retention, deletion, access control, and what happens to prompts and documents after they are processed. Whether the vendor states its subprocessors and its incident practice, or leaves the buyer to assume.
Assistant interactions are held on a separate locked database, data is encrypted, ISO 27001 and SOC 2 certification is claimed, and Azure OpenAI is the model service. No retention period, deletion commitment, subprocessor list or incident notification practice is published. The site has a security page, a trust center and a privacy charter.
Vincent's security material covers most of the ground, short of incident timing and deletion at the end of a contract. Customers choose how long conversation logs and files are kept, with one year as the default, and the data is permanently deleted at the end of that period. Role based access limits internal access to authorized staff under documented circumstances. Data is encrypted in transit and at rest with FIPS 140-2 cryptography, and each enterprise customer has its own master key held in hardware security modules. The trust center for Vincent names five subprocessors with their locations. AWS hosts the service, AWS Bedrock, OpenAI and Google Vertex AI supply the AI, and Turbopuffer runs the vector database. Zero retention agreements bind the AI providers. The privacy policy says affected users are told of a breach, with no time frame given. vLex's terms grant a perpetual, irrevocable license to user content and say nothing on deletion after the subscription ends.
AI Liability and Recourse
What the vendor stands behind contractually when its output is wrong. Indemnities, caps, carve outs, insurance, and whether any of it is published or only reachable through a negotiated agreement.
No liability position is published. The user terms define the services, materials and subscription structure, and no indemnity, cap, warranty or insurance position appears in them. The Jus Connect terms say the subscription agreement that governs firms is a separate document, and it is not published.
Liability is handled through a standard limitation clause that disclaims the exposure the product creates. vLex's terms, updated March 2024 and naming Vincent AI among the services they cover, cap vLex's total liability at $100, with carve outs for fraud and willful misconduct. Consequential loss is excluded. Section 12(d) calls machine generated output probabilistic and asks that it be evaluated for accuracy, including by expert human review. The customer indemnifies vLex for breaches of the terms and for third party claims over documents it uploads. No indemnity runs from vLex to the customer, and no warranty on output is given. Section 15(E) says these terms prevail over a subscription agreement where the two conflict.
Practice Systems Integration Depth
How deeply the product reaches into the systems legal work already lives in: document management such as iManage and NetDocuments, Word and Outlook, contract lifecycle management, matter management, e-billing, and court filing systems.
The help center headline describes an agent to agent integration bringing arbitration AI to where users already work, and the AI Enterprise plan connects Jus AI to a firm's own document database. No system is named, nothing says what syncs or in which direction, and no document management system is named.
Real integrations are named, including the legal ones, with some depth on the deepest. vLex names Microsoft Word, Outlook and iManage connections. Inside Clio Operate, Vincent reads the structured matter record, including facts, history, documents and workflows, and can draw on a firm's connected document systems. It returns outputs to fields, chronologies and Wiki pages in Operate, and updates the record with lawyer confirmation. Vincent Studio lets enterprise customers build firm workflows without code, and Clio's custom team builds further integrations on request. No setup guide says what each connector moves, in which direction, or what an administrator configures.
Deployment Model and Data Residency
Where the software runs and where the data sits. Multi tenant cloud, single tenant, private deployment, on premises, and whether region of residence is a published option or an enterprise conversation.
Jus AI is delivered as a cloud service. The security page names Microsoft's Azure OpenAI Service as the model service, and the help center describes a separate locked database for assistant interactions. No region, residency option or tenancy model is stated.
Vincent runs as a multitenant service, with each client's data logically isolated at the infrastructure level, and residency is offered. Customers can host data and keys in the United States, the European Union or Australia. Clio's trust center lists AWS hosting in all three regions. It lists AWS Bedrock and OpenAI as AI providers in the United States and the European Union, and Google Vertex AI in all three. Each enterprise customer gets its own encryption master key. Nothing states which AI region serves a customer whose data sits in Australia, or what else changes between tiers.
Security Certifications and Trust Center
Independent attestation a buyer can pull without a sales call: SOC 2, ISO 27001, penetration test summaries, a trust center with current reports and named scope rather than a badge image.
The security page states ISO 27001 and SOC 2 as proof of security and confidentiality by design, and ISO 42001 for responsible AI, and points to a trust center for the measures and certifications. A customer is quoted on the ISO 27001 certification. No certifying body, coverage period or route to a report is stated on the security page.
Certification is current, named and reachable through a trust center. Clio's trust center for Vincent and vLex lists SOC 2 Type 2, ISO/IEC 27001:2022 with its statement of applicability, HIPAA, GDPR and a VPAT. It offers the SOC 2 report, a penetration test summary and security and privacy white papers through an access request. vLex's support article dates SOC 2 to January 2025 and ISO 27001 to June 2025. Security systems undergo regular independent assessments and real time monitoring. The auditor and the audit period are not published.
Model Supply Chain Disclosure
Which models sit underneath, whose they are, where they run, and whether the vendor commits to telling customers when that changes. A legal buyer inherits every dependency it cannot see.
The security page states that Azure OpenAI Service enables Jus Mundi to offer its data security and that Microsoft makes AI available to the user community under its security and privacy controls, which names the provider and hosting arrangement. The 2023 launch release describes in house machine learning models trained on the company's database and an assistant powered by GPT. No specific model, inference region or commitment to notify customers of changes is stated.
Clio names the AI providers behind Vincent and where they run, without naming the models. The trust center for Vincent lists AWS Bedrock and OpenAI as AI providers in the United States and the European Union. It lists Google Vertex AI in the United States, the European Union and Australia, and Turbopuffer as the vector database. Vincent's pages describe a hybrid pipeline of generative and rules based AI with vector search over the library. Zero retention agreements bind the model providers. No model or version is named. The trust center offers a subscription to updates, and no commitment to notify customers of a provider change is published.
Commercial Transparency
Whether a buyer can learn what this costs without entering a sales process: published rates, the unit being charged, what sits behind an enterprise tier, and what implementation adds.
Jus Mundi's pricing page lists individual academic access at twenty nine euros a month excluding tax, academic institutions at two hundred and fifty euros a month on a yearly subscription, and practitioners at one hundred and twenty nine euros a month. Each is limited to one subscriber, with monthly or yearly billing. Law firms, chambers and states are on quotation, a seven day free trial is offered, and the features of each tier are itemized. Jus Mundi also uses a newer plan structure of Academic, Essentials, AI Premium and AI Enterprise.
Clio shows how Vincent is packaged and publishes no price. Its pricing page places Vincent in Clio for Enterprise, the offer for Am Law firms and corporate legal departments, alongside Clio Operate. It says administrators control who can use which Vincent resources. Vincent Studio is for Enterprise customers. Vincent is bought through a demo, and vLex offers a free trial with no length or terms stated. No price, unit of charge or plan figure is published. For smaller firms Clio sells Clio Work, built on the same library and the Cert citator, as an add on or inside the Signature Work and Elite Work packages, also without a published price.
Firm and Practice Coverage
Who the product is actually built for. AmLaw, midlaw, small firm and solo, in house departments, government and courts, and which practice areas are supported rather than merely claimed.
The buyers are international law and arbitration practitioners, law firms, chambers, states, public bodies and academics. The database is stated to cover all areas of international law and arbitration on any subscription, updated daily, with institutional partnerships and publisher content such as the ICC collection as add ons. Jus Mundi states its scope as international law and arbitration. No jurisdiction or matter type within that scope is named as unsupported.
Coverage is quantified, and its limits are named in part. The library holds more than one billion documents from more than 100 countries, with country collections named from Brazil to the United Kingdom. More than 850 million court records sit behind the litigation profiles. Vincent runs in English, Spanish and Brazilian Portuguese. Workflows cover research, litigation, transactions and litigation intelligence. vLex serves large and small law firms, legal departments, bar associations, law schools, law librarians and government departments. Clio sells Vincent through its enterprise offer to Am Law firms and corporate legal departments, and its offer for smaller firms is Clio Work. The Vals evaluator noted its study covered a small part of the product, and vLex said document summaries do not draw on its legal database. Outside Canada, the United Kingdom and Ireland, most cases show only a citation count rather than treatment.
The 12 legal signals, side by side
Recorded rather than graded. These are the questions a practitioner has to answer before a tool touches a client matter, and the answers are taken from public material only.
Client Data in Training
Can material a lawyer puts into this product be used to train a model?
Whether customer content trains models is left unsettled. The help center states that assistant interactions are hosted on a separate locked database for privacy, which addresses storage, not training. The security page and the full user terms were not available to read, and the subscription agreement governing firms is not published.
vLex's terms grant an improvement right that never names training, and the only training statement covers the AI providers. Section 8(c) of the terms, updated March 2024 and covering Vincent AI, gives vLex a perpetual, irrevocable, sublicensable license to user content. The license lets vLex provide the service, improve its products and services, and create aggregated and deidentified information. Section 11(b) lets staff and outside AI models reach user content for service provision and service improvement, among other purposes.
Clio's security page says zero retention agreements with AI model providers ensure confidential documents and queries are never stored or used for model training. Neither document says whether vLex or Clio may train its own models on customer content.
Prompt and Output Retention
How long does the product keep what a lawyer typed, and can that be set to zero?
Retention of prompts to Jus AI and of its outputs has no stated period. The help center states interactions are held on a separate locked database, without a period.
Customers choose how long Vincent keeps conversation logs and files, with one year as the default, and the data is permanently deleted at the end of the chosen period. Zero retention agreements bind the AI providers. No setting for keeping nothing is described. vLex's terms say nothing on deleting user content after the subscription ends.
Ethical Walls and Matter Segregation
Does retrieval respect the firm’s ethical walls, or can the model read across them?
The help center states that assistant interactions are hosted on a separate and locked database for additional privacy and security. That separates assistant data from the public research database rather than one customer's or matter's data from another's. The AI Enterprise plan connects a firm's own documents, and nothing describes how access within a firm is walled.
In Clio Operate, Vincent works within the permissions, ethical walls and audit trail the firm has already set up there. Access can be scoped to a single matter or to the whole firm, and every interaction is visible. Clio announced this on 25 August 2026, with general availability in November 2026. Used on its own or through the iManage connector, Vincent relies on its own logical isolation per client and role based access.
Vincent Projects adds its own permissions on shared workspaces. Enforcement per user at query time is implied by matter scoping but not stated in those words.
Third Party Request and Subpoena Notice
If someone subpoenas the vendor for a firm’s data, does the firm hear about it first?
A customer whose data is demanded by a third party has no stated right to be told. The subscription agreement is not published.
vLex's terms address disclosure to authorities and say nothing about telling the customer. Section 11(b) lists compliance with lawful requests from authorities among the reasons staff may reach user content. Section 9 lets either party release confidential information as needed to comply with legal requirements. Neither clause, nor the privacy policy, commits to notice or reserves discretion over it. No transparency report is published.
Primary Law Corpus Provenance
Where does the law in this product come from, and does the vendor have the right to use it?
The database is described as awards, orders, decisions, judgments, treaties, laws and case materials in international law and arbitration, updated daily and drawn from more than twenty institutional partnerships. Publisher content such as the ICC dispute resolution collection is offered as an add on, and primary documents are kept open in a free light version. The rights basis for the institutional and publisher content is not stated on the pricing page, the home page or the 2023 launch release.
The sources are named and the rights basis is stated. Vincent draws on vLex's global collection, now sold as Clio Library, with United States primary law that came through Fastcase. Clio says the legal authority behind Vincent is owned and developed by Clio rather than licensed. The collection holds more than one billion documents from more than 100 countries, plus more than 850 million court records. United States case law, codes and regulations come from more than 250 publishers and 400 courts and are updated daily. No update lag is published for other jurisdictions.
Good Law Verification
Does the product tell you when the authority it just cited has been overruled?
CiteMap, described in the user terms as part of the materials and in the launch release as a proprietary legal citation links creator, maps how awards and decisions cite one another across the database. Jus Mundi's home page states that Jus AI's citations can be checked and traced to source. Jus Mundi does not say whether CiteMap flags subsequent negative treatment. It is the vendor's own signal, not a licensed citator.
Vincent answers the good law question directly. Every research output carries a Cert Citator check on whether the cited law remains valid, shown with the authority rather than as a separate step. Cert began as Judicata software that Fastcase bought before the vLex merger, and Clio now owns it, so no outside party can withdraw it. Coverage outside the United States is uneven. Clio's help article on verifying case law, updated 16 September 2026, shows positive and negative treatment counts and a negative treatment flag for cases in Canada, the United Kingdom and Ireland.
In most other jurisdictions a case shows only how often it has been cited, which says nothing about whether it is still good law. The Canadian launch of 23 September 2026 adds checking of existing citations against Canadian authorities.
Refusal and Uncertainty Behavior
What does the product do when the answer is not in the corpus?
Jus Mundi documents how a user checks an answer rather than what the model does when it cannot answer. Its home page states that every reasoning step is exposed and every citation traceable. No abstention path or confidence signal for questions the database cannot support is described.
An outside evaluator observed Vincent declining to answer, and it cost Vincent points. The February 2025 Vals Legal AI Report praised Vincent AI for refusing questions where it lacked enough data rather than giving a made up answer, and recorded that those refusals lowered its scores. A product that takes a lower benchmark result rather than guess is showing the behavior this question asks about. vLex and Clio do not describe a no answer path in their own material, so the behavior is shown by others rather than promised.
Fabricated Citation Record
Does a public court record exist addressing fabricated or hallucinated legal citations in output from this product?
No court order, opinion, arbitral decision or disciplinary record naming Jus Mundi or Jus AI is on the public record, including the AI Hallucination Cases database maintained by Damien Charlotin. In April 2026 the Quebec Superior Court set aside an award in ARIHQ c. Santé Québec because the arbitrator's own award relied on fabricated authorities, and no product was named.
Three court records mention vLex as a tool counsel used, and each addresses the lawyer's failure to verify rather than the product's output. In Flycatcher Corp. Ltd. v. Affable Avenue LLC (S.D.N.Y., No. 24 Civ. 9429, opinion and order of 5 February 2026), counsel said he ran some arguments through vLex before using a separate cite checker. The court found he never checked the brief himself and struck the filings. In Brooks and Brooks Inc. v. Patel (Minnesota District Court, Hennepin County, No. 27-CV-24-11194, order of 8 September 2025), counsel admitted failing to confirm a citation through vLex Fastcase and was fined $5,000.
In Fletcher v. Experian Information Solutions (5th Cir., No. 25-20086, 18 February 2026), the court named Casetext and vLex among counsel's sources and sanctioned counsel for not verifying. All three name vLex rather than Vincent AI, and none makes a finding about the product's output. Auto 61/2026 of the High Court of Justice of Galicia (7 July 2026) lists Vincent AI among verified legal AI tools when fining a lawyer, without naming the tool used. The AI Hallucination Cases database kept by Damien Charlotin lists these records.
Bar Guidance Alignment
Has the vendor engaged in public with the ethics opinions its buyers are bound by?
No ethics opinion, bar rule or professional responsibility framework is tied to the product. The pricing page offers expert advice and practical steps to guide teams through the AI shift, which is training rather than guidance on professional duties.
Vincent's own pages and terms engage no named ethics opinion, ABA Formal Opinion 512 and state bar guidance included. vLex's terms say the service is not legal advice and ask that output be evaluated, including by expert human review, which describes the product rather than a lawyer's duties. vLex has long supplied research to state bar members through Fastcase, and The Florida Bar appears among its member benefit logos, with no published engagement with bar AI guidance on the Vincent pages.
Billing and Fee Posture
Does the vendor address what happens to the bill when the work takes an hour instead of six?
Law firms and chambers are named buyer segments. The home page frames client results as winning strategies and time saved, with research, drafting, translation and analysis completed in a fraction of the time. Nothing addresses how AI assisted research is recorded or disclosed on a client's bill.
Vincent is sold on time saved, and nothing addresses the bill. Clio cites independent studies showing productivity gains of at least 38 percent across legal workflows. A law library customer says research that took hours now takes minutes. Inside Clio Operate every interaction sits in the audit trail, which is not offered as a fee record. No guidance on billing or client disclosure is published for Vincent.
Outside Counsel Guideline Readiness
Can a firm get this vendor through a client’s AI clause without a bespoke negotiation?
The model provider is named on a public page. The security page names Microsoft's Azure OpenAI Service as the service behind Jus AI and points to a trust center for measures and certifications.
Clio publishes a current subprocessor list for Vincent that names its AI providers. Clio's trust center lists AWS for hosting in the United States, the European Union and Australia. It lists AWS Bedrock and OpenAI as AI providers in the United States and the European Union, Google Vertex AI in all three regions and Turbopuffer as the vector database. SOC 2 and ISO 27001 reports, a penetration test summary and AI documents come through an access request.
Zero retention agreements bind the AI providers. No data processing agreement or client facing consent and notification pack is published for Vincent.
Court Disclosure Support
If a judge’s standing order requires an AI disclosure, can the product produce one?
Every answer is cited to the database with reasoning steps exposed, so a practitioner can show the sources behind a research result. Nothing states that a record of the model used, the sources retrieved and the human verification can be exported for a tribunal or court.
Much of a disclosure record exists, spread across features. In Clio Operate every Vincent interaction sits in an audit trail scoped to the matter. Every research output cites primary sources with links and a Cert check. Users can see and exclude the sources an answer rests on, which leaves a trace of human review. Clio names its AI providers but not the model behind a given answer, and no export gathers model, sources and human review together for a filing.
The questions both sides leave open
Derived from the records above rather than written, so it cannot favor either vendor. Take these into both conversations and ask each side the same question.
- Bar Guidance Alignment
Product updates
The latest logged changes from each vendor, newest first, each linked to its source.
Jus Mundi
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Model / architecture
Jus Mundi released Jus AI 3, a new generation of the research engine behind every Jus AI mode, built on its own model stack for international arbitration.
Source -
Product / capability
Jus Mundi added 35 publications (17 titles plus the 18 volume Investment Treaty Arbitration and International Law set) to its JURIS Arbitration Law Library add on, covering US practice such as 28 U.S.C.
Source
Vincent AI
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Product / capability
Vincent now includes Canadian case law and legislation, built on the Jurisage dataset Clio acquired in June 2026 and since ingested and validated.
Source
In summary
Jus Mundi
Jus Mundi, a French company founded in 2019 and headquartered in Paris, is a research platform for international law and arbitration. It is built on awards, decisions, treaties, laws and case materials updated daily from more than twenty institutional partnerships. Its AI layer, Jus AI, launched in June 2023, answers questions with citations, compares cases, drafts and translates, showing each reasoning step. According to the AI Legal Index, Jus Mundi states ISO 27001, ISO 42001 and SOC 2, names Azure OpenAI as its model service, and publishes a practitioner price of €129 a month. Its help center states that assistant interactions sit on a separate locked database.
Vincent AI
Vincent AI is a legal research and workflow assistant, released in October 2023, built on vLex's database of more than one billion documents across more than 100 countries and US primary law from Fastcase. Clio bought vLex for $1 billion and now sells the product as Vincent by Clio. Vincent AI runs more than 20 workflows across research, litigation and transactions, checks citations with the Cert Citator, and integrates with Word, Outlook, iManage and Clio Operate. The AI Legal Index records independent testing in the February 2025 Vals Legal AI Report, SOC 2 and ISO 27001 certification, and customer selected retention defaulting to one year. Clio sells it through its enterprise offer, by demo or free trial, with no published price.
Questions buyers ask
Are Jus Mundi and Vincent AI the same kind of product?
No. Jus Mundi specializes in international arbitration and treaty law, with a database of awards and institutional materials. Vincent AI is a general legal research assistant over primary law from more than 100 countries. Both use AI to answer research questions with citations. Vincent AI publishes independent test results and firm level controls, while Jus Mundi publishes ISO 42001 certification and a practitioner price. From the AI Legal Index, based on each vendor's own published materials as of September 27, 2026. No vendor pays for placement.
What is ISO 42001 and which of these holds it?
ISO/IEC 42001 is the audited management system standard for artificial intelligence, covering how an organization governs, tests and monitors its AI. Jus Mundi states it holds ISO 42001 alongside ISO 27001 and SOC 2. Vincent AI states SOC 2, obtained in January 2025, and ISO 27001, achieved in June 2025, without ISO 42001. From the AI Legal Index, based on each vendor's own published materials as of September 27, 2026. No vendor pays for placement.
How did Vincent AI perform in independent testing?
In the February 2025 Vals Legal AI Report, Vincent AI scored between 53.6 and 72.7 percent across six tasks and beat the lawyer baseline on three. The evaluator praised it for refusing to answer where it lacked sufficient data rather than guessing, which lowered its scores. vLex later withdrew from a separate Vals research study before results were published. From the AI Legal Index, based on each vendor's own published materials as of September 27, 2026. No vendor pays for placement.
How much do Jus Mundi and Vincent AI cost?
Jus Mundi publishes €129 a month for a practitioner, €29 a month for an individual academic and €250 a month for an academic institution, with firms and states quoted and a seven day trial. Vincent AI has no published price, and Clio sells it through Clio for Enterprise by demo, with a free trial offered by vLex. From the AI Legal Index, based on each vendor's own published materials as of September 27, 2026. No vendor pays for placement.
Neither vendor paid for inclusion, placement or a grade, and neither reviewed this page before it published. Everything on it comes from public material on the dates shown. How the index grades.
Three points to weigh. Jus Mundi's security page and full terms may answer several of its gaps. Vincent AI's ethical wall inheritance is documented for its Clio Operate integration, not for standalone use. vLex also withdrew from a later Vals research study before results were published. On 23 September 2026 Jus Mundi added 35 arbitration titles to its JURIS library and Vincent AI added Canadian case law and legislation.