Industry · Legal & Law

AI for law firms. Faster case work, with confidentiality intact.

We build AI applications for law firms, civil-law notaries, tax lawyers and in-house legal teams. Document review, case-law search and case-file summarisation, each with EU data residency, source references and an audit trail that can support NOvA guidelines.

Practice areaDocument review
Practice areaCase-law search
Practice areaCase-file summaries
Practice areaClient enquiry triage

The Dutch legal sector in numbers.

~18.500
Lawyers registered with the NOvA
~4.300
Firms in the Netherlands
~75%
Indicates that AI adoption is a strategic priority
High-risk
Legal AI in Annex III of the EU AI Act

Sources: NOvA annual report 2024, Wolters Kluwer Legal Industry Survey 2025, EU AI Act Annex III.

Off-the-shelf packages don't cover what your practice requires.

Most law firms run a combination of Kluwer Navigator or Lexis for case law, a document management system for files, and a case-management package such as Clio or in-house middleware. These suites do their core job well, but once you want AI features (document review across hundreds of contracts, semantic search over your own precedents, a chatbot for client questions), you run into standard templates that aren't set up for your firm.

M&A practices need due-diligence tooling that flags critical clauses across hundreds of contracts, family law calls for case-file summarisation with privacy safeguards, tax lawyers want regulatory monitoring tailored to each client portfolio, and in-house teams need contract-review workflows that integrate with their ERP and CLM. None of these workflows fits an out-of-the-box package.

At the same time, the market is under pressure. Commodity suites such as Harvey AI, Spellbook, Robin AI and Eve are marketed as revolutionary, but their output is standardised: the same model, the same prompts and the same benchmark playbook at every firm that subscribes. The distinctive strength of *your* firm, its particular clause style, its own precedent bank and its accumulated expertise in a niche segment, doesn't come through in such a suite. What remains is a generic layer that at best speeds up junior work without making the firm any stronger strategically.

We build AI applications that slot into your existing stack: private LLM deployment for sensitive case work, RAG systems that unlock your own knowledge base, and always with source citations so that hallucination is not a risk. We are not replacing Kluwer or Lexis; we build the custom layer on top that sets your specialism apart. For some firms that means focusing on a single use case, such as a document configurator that generates contracts from a question tree. For others it is a broader AI platform supporting several practice groups.

AI applications by legal practice.

Each discipline has its own document flows, risks and compliance requirements. For each area, we show what we typically build and which models we use for it.

M&A and corporate

The due-diligence phase is where AI delivers visible value fastest. Hundreds of contracts (supplier, lease, IP and employment agreements) must be reviewed for change-of-control clauses, notice periods and restrictive provisions. A well-trained LLM workflow flags these automatically and groups them by risk category.

Our due-diligence modules combine Claude with a RAG layer built on your playbook and previous transactions. The legal team stays in control: the AI does the heavy lifting and delivers a structured shortlist per data-room folder. For more detail, see our work on due-diligence platforms.

  • Contract review with playbook overlayYour firm's own playbook defines what counts as "red" or "green", not a generic benchmark.
  • Data-room classificationAutomatically detect document types and map them to the correct due-diligence checklist.
  • Clause extraction with source referencingEvery flag links back to the exact clause and page, with no unsupported claims.
  • Private LLM deploymentClaude or Llama hosted with EU data residency, with no leakage of training data to public models.

Built to the strictest standards of legal practice.

Confidentiality, GDPR and the EU AI Act impose strict requirements on any AI application in a law firm. From the first sprint, we work within that framework.

Duty of confidentiality, Wbo art. 11a

Case data stays within the firm

We deploy LLMs within your own cloud environment or in an EU private deployment. Client files never pass through a public model provider, and logging is configured so that privileged information is not stored in plain text.

GDPR Art. 35: DPIA

Privacy by design for client files

Client files almost always contain special category personal data. For every engagement, we deliver a DPIA document covering data flows, retention periods and data subject rights, ready for your Data Protection Officer.

EU AI Act — Annex III

Legal AI is high-risk

Legal AI applications fall under the high-risk category of the AI Act. We document risk classification, human-in-the-loop design and bias monitoring from the design stage onwards, rather than as after-the-fact paperwork.

NOvA guidelines

Rules of conduct for the legal profession

Since 2024, the Netherlands Bar Association (NOvA) has provided explicit guidance on the use of AI. Our workflows respect, among other things, the rules on automatic storage of case data, hallucination control and transparency towards the client.

eIDAS Regulation

Advanced electronic signatures

For client agreements, engagement letters and e-signing of contracts, we build eIDAS-compliant signature flows with audit logs and qualified time stamps.

Wwft & KYC

Client due diligence

For firms subject to the Wwft (notaries, property, M&A), we integrate KYC screening, UBO checks via the KvK and sanctions list monitoring into the onboarding process. An audit trail per client, no more separate Excel files.

Seamlessly connected to the legal tech ecosystem.

We integrate with the legal software stack your firm already uses. No migration of your entire stack: our AI layer complements it rather than replacing it.

Kluwer
Navigator + Smartlaw
Sdu
Legal content
LexisNexis
Case law database
Clio
Case management
Filevine
Litigation management
Ironclad
Contract lifecycle
iManage / NetDocs
Document management
In-house DMS / ERP
Custom integration

The AI layer sits alongside, not in place of.

Kluwer, Lexis and Sdu do the heavy lifting on case law and legislation databases, so you don't need to replace them. We build an AI layer that makes your firm's own precedents, previous opinions and internal playbooks searchable via Retrieval-Augmented Generation. The model's suggestions always come with a source reference to your own material or to the legislation database, with no invented citations.

For clients with their own practice management system or legacy middleware, we integrate on a case-by-case basis. This adds design time to the plan, but prevents integration debt later on. For deeper LLM integrations, see our page on custom LLM integrations.

Not yet sure about a large project?

Test your idea first: a working prototype in 1 day

With OneDayBuild, we turn your idea into something tangible in one day for €1,150, so you can see whether further development is worth the investment. Decide to go ahead with the full build? Then we credit the full cost.

Explore OneDayBuild →

Which models and which use cases.

The choice of language model is not a cosmetic detail: it determines whether the solution fits your type of work. For long-context case files, such as a 500-page deed or a complete litigation file, we typically use Claude because of its 200K-token context: the model reads an entire file in one go and delivers a structured summary without us having to chunk it artificially. For broad contract-review flows with rapid iteration we deploy GPT-4o, which is on balance a little faster on shorter documents. And for firms with the strictest privacy requirements, such as trust offices, M&A boutiques with government clients, or lawyers handling state-secrets matters, we deploy Llama 3.1 fully on-premise or in a private VPC. No outbound API connections, with auditable model weights.

The use cases we build most often, grouped: document review and clause extraction for due diligence, RFP analysis and contract renewal cycles. Case file summarisation for litigation teams taking over a file or preparing a conclusion. Semantic search over case law: not just keyword searching on rechtspraak.nl or EUR-Lex, but conceptual searching, for example: "rulings in which an extension clause in a lease agreement was interpreted in the tenant's favour under ROZ conditions". Client enquiry triage via a chatbot front-end on your website that handles first-line questions and delivers the lawyer a structured summary for the intake meeting. Legislative monitoring that scans the Staatscourant, the EU Official Journal and case law for relevance per client or case, with no more manual alerts.

In addition, we build compliance mapping for client portfolios (GDPR, Wwft, AI Act, CSRD), KYC/Wwft screening for client onboarding and, for firms that advise clients on AI compliance themselves, AI bias audit tooling that the firm uses to assess its clients' applications. Time-recording automation is an underestimated gain: an AI that categorises email traffic, calendar entries and document edits against open cases significantly reduces the administrative burden per lawyer, especially in firms under pressure from billable-hour targets.

Regardless of the use case, the approach is the same: a RAG layer that connects to your own knowledge base, an EU-resident deployment of the model, an audit log that retains every model call with its input and output for review, and a human-in-the-loop design in which a lawyer always has the final check before any output reaches a client.

From workflow audit to production in clear steps.

An AI implementation in a law firm has its own rhythm. Five phases that we follow in the same order for every firm.

01 · Audit

Use case selection

One day at your firm with partners and paralegals. Outcome: which workflows deliver value immediately, which need more preparation, and which fall away on compliance grounds.

02 · Design

Architecture & model selection

Choice between Claude for long-context case files, GPT-4o for broad tasks or Llama for private deployment. RAG strategy mapped across your knowledge base and DMS.

03 · Build

Sprints with legal review

One working workflow delivered each sprint. A dedicated partner checks the output for legal accuracy. No workflow goes live until a lawyer has signed off on its quality.

04 · Cutover

Phased rollout per team

First one practice group, then the next. Each rollout includes training on spotting hallucinations, prompt discipline and the NOvA boundaries for AI use.

05 · Maintenance

Ongoing with audit cycles

We monitor model drift, update with every new LLM version and keep the AI Act documentation current. Compliance is not a project but an ongoing obligation.

Context within the legal tech market.

Wolters Kluwer Future Ready Lawyer 2024

"79% of Dutch lawyers named AI as the technology with the greatest impact on their practice over the next three years, a shift that doubled within a single year."

NOvA, Handling AI Use in 2024

"A lawyer remains ultimately responsible for every product created with AI; the application must be set up so that accuracy and source references can be checked at all times."

European Lawyer's Tech Outlook 2025

"Mid-tier firms now building custom AI on their own precedent bank are noticeably ahead of firms waiting for commodity suites; the difference lies in your own knowledge base, not in the model."

Answers for legal practices considering AI.

The questions we hear most often from managing partners, IT leads and compliance officers.

What does AI actually do in a law firm?
The most visible applications are document review across large contract batches, case file summarisation for lengthy litigation files, semantic search through your own precedents and case law, and first drafts of standard submissions or advice memoranda. In addition: automating KYC and Wwft screening, legislative monitoring tailored to each client portfolio, and client enquiry triage via chatbot, where the lawyer receives a structured summary. In all cases the lawyer remains responsible: the AI does preparatory work, not autonomous decision-making.
Does our case data end up with OpenAI or Anthropic?
No. That is one of the first design decisions we make with you. We deploy LLMs in a private EU environment (Azure OpenAI within your tenant, AWS Bedrock in an EU region, or a fully on-premise Llama stack). No training on your data, no retention by the model provider, and no US Cloud Act exposure. Professional confidentiality requires this, and we design around it, not the other way round.
How does this relate to the EU AI Act and professional confidentiality?
Legal AI falls under Annex III of the AI Act and is therefore high-risk. That means documentation of the risk classification, human-in-the-loop design, data quality monitoring, and transparency towards the end user. We deliver that documentation as standard. For professional confidentiality (Wbo art. 11a), we design data flows so that privileged information is not shared unintentionally. For firms that themselves advise clients on AI compliance, the same infrastructure can be used. See our page on enterprise AI implementation.
How do you prevent the AI from inventing case law?
Hallucination is the greatest reputational risk for legal AI. US judges have already sanctioned lawyers who cited fictitious rulings. We design every flow with mandatory source references: the model never cites a ruling without a verifiable link to rechtspraak.nl, EUR-Lex or your own precedent file. Where in doubt, the model declines to answer and escalates the question to a lawyer. RAG architecture with strict source grounding is essential here; we do not allow free-form LLM output without a source into production.
Does AI replace the lawyer?
No, and that is not a design goal either. AI is good at heavy lifting: searching hundreds of contracts, summarising a 500-page file, drafting a first version of a memo. But legal judgement, strategic advice to the client and ultimate responsibility for every product remain with the lawyer. The firms that achieve the best results use AI to free up paralegals and lawyers for high-value work, not to replace them.
Do we need to replace Kluwer or Lexis first?
Almost never. Kluwer Navigator, Sdu Juridisch and LexisNexis are strong in legislation databases and case law publication, so you don't need to replicate that. The added value of custom AI lies in combining it with your own firm's precedents, your own playbooks and your own case files, and that's what we build a RAG layer on top of. We work well alongside them and, where possible, integrate via the publishers' APIs.
What determines the cost of an AI project?
Three factors weigh most heavily: scope (a single use case such as contract review versus a firm-wide platform with multiple workflows), compliance requirements (a private LLM deployment is more demanding than a SaaS layer), and the depth of integration with your existing DMS and case management. We work with a fixed sprint budget and provide a concrete price for the full build after the design phase, rather than open-ended contracts. For broader cost context on AI projects, see our page on enterprise AI implementation.
How should a mid-sized law firm get started with AI?
The recommended route is to choose one clearly defined use case where your firm feels the pain most, often contract review, case summarising or an internal knowledge base search. Build a pilot around it with a dedicated partner as sponsor and a paralegal who helps develop it. After a few sprints you will have a working tool and, just as importantly, a team that understands what AI can and cannot do. Only then should you expand to other workflows. For wider AI literacy across the firm, we also provide AI literacy training for partners and staff.

Ready to bring AI into your legal practice?

A thirty-minute introductory call with a managing partner or IT lead. We listen to your document workflow, ask critical questions about compliance and give you an initial direction. No obligation, and held in confidence.

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