CASUS

CASUS is an AI-powered legal workspace designed for law firms and in-house legal teams in the DACH region. It combines document review,...

Your Swiss-hosted Legal AI associate for document review, contract benchmarking, and jurisdiction-specific legal research.

Integrates directly into Microsoft Word, focusing on DACH region compliance and jurisprudence.

Try CASUS Free

Pro fromCHF 125/mo

Swiss-HostedGDPR CompliantMS Word Add-inLegal ResearchContract Benchmarking

9 Zekai

Swiss-Centric Legal AI

AI for Legal

Ease of Use

9.2

Accuracy

8.8

Value

8.5

Time Saving

9.3

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⚡ Quick answer

For legal professionals in the DACH region, CASUS is a leading AI tool for legal research and contract analysis. It is specifically designed for this market, with a research database of over 660,000 Swiss federal and cantonal rulings, Swiss-hosted servers for GDPR and nFADP compliance, and direct integration into Microsoft Word.

CategoryLegal AI Assistant

Best ForLaw firms and in-house counsel in the DACH region.

Price FromCHF 125/mo

FreeFree Trial

DifferentiatorSwiss-hosted, GDPR/nFADP compliant, with a research database of 660,000+ Swiss court rulings.

ProofIntegrates directly into MS Word; ISO-27001 certified infrastructure.

Rating4.5/5

📖 About CASUS

CASUS is an AI-powered legal workspace designed for law firms and in-house legal teams in the DACH region. It combines document review, contract benchmarking, legal proofreading, and legal research into a single platform that integrates with Microsoft Word.

Real Impact

Before & After

❌ Before

Juggling multiple windows for research, drafting in Word, and checking compliance notes.

Hours per contract

✅ After

A unified workflow inside MS Word for research, drafting, and contract analysis.

Minutes per clause

Social Proof

Trusted by professionals

Ease of Use

9.2

Accuracy

8.8

Value

8.5

Time Saving

9.3

"The MS Word integration is seamless. Being able to benchmark clauses against our playbook and research Swiss case law without leaving the document has fundamentally changed our review process."

Julia K., Corporate Counsel · June 2026

"As a Swiss firm, data sovereignty is non-negotiable. CASUS gives us the AI tools we need with the GDPR and nFADP compliance we require. It was built for us."

Lukas M., Partner · May 2026

"A powerful tool for our Swiss practice. However, the legal research is entirely Swiss-focused, so our international teams can't use it for their jurisdictional research. It's a specialist, not a generalist."

Alex B., Legal Tech Manager · June 2026

"The AI Data Room for due diligence is a game-changer. What used to take days of manual comparison now takes minutes. It's incredibly fast and accurate for identifying deviations."

Sophie R., Associate · April 2026

Connects With

Works with your existing stack

Microsoft Word SharePoint (coming soon)

Setup complexity: Moderate

CASUS is an AI-powered legal workspace designed for law firms and in-house legal teams in the DACH region. It combines document review, contract benchmarking, legal proofreading, and legal research into a single platform that integrates with Microsoft Word.

Who It's For

Why Legal choose this tool

🎯

Built for

Legal professionals in Switzerland and the EU needing a GDPR-compliant AI tool for document review and research that integrates directly into their Word-based workflow.

In-Depth Overview

For legal professionals in the DACH region, CASUS is built to solve local problems. Unlike US-centric tools, it is Swiss-hosted, fully GDPR and Swiss nFADP compliant, and built on ISO-27001 certified infrastructure. Its core strength lies in its deep integration with the local legal landscape, offering a research database of over 660,000 Swiss federal and cantonal court decisions. This isn't a generic AI; it's a specialized associate trained on relevant, regional law. The platform's primary benefit is workflow efficiency. By integrating directly into Microsoft Word as an add-in, CASUS eliminates the need to switch between applications for drafting, research, and review. You can benchmark a contract against your internal standards, proofread for legal consistency, and chat with documents to identify risks without ever leaving your document. The vendor's 'Zero Data Retention' policy and commitment to Swiss data sovereignty provides a level of security that is critical for handling sensitive client information under European privacy law.

Key Use Cases

⚖️

Accelerate Contract Review without Leaving Microsoft Word

In-House Counsel (DACH region)

Upload a third-party contract, benchmark it against your company's standard agreements, and use the AI chat to identify risks and suggest compliant clauses, all within Word.

Review time cut by hours

✓ Pros

Swiss-hosted and fully GDPR/nFADP compliant.

Direct integration with Microsoft Word simplifies workflows.

Specialized legal research database of 660,000+ Swiss rulings.

Zero Data Retention policy enhances data security.

Transparent pricing with a clear Standard tier and no minimum contract period.

· Cons

Legal research feature is highly focused on Swiss jurisprudence, limiting use elsewhere.

SharePoint integration is listed as 'coming soon' and not yet available.

As a newer tool, it may lack the feature depth of more established global competitors.

⚡ Editorial Verdict

CASUS makes a strong case for itself by focusing on a specific, underserved market: DACH legal professionals. Its commitment to local data sovereignty and a research database of Swiss rulings is a powerful differentiator. The main trade-off is this very specialization; its core research capabilities are limited for practitioners outside of Switzerland.

Questions & Answers

Frequently asked questions

Where is CASUS data hosted and processed? +

All client data is stored in Switzerland. The AI processing occurs in Europe. The entire infrastructure is designed to be fully compliant with Swiss and EU privacy standards, including attorney-client privilege.

Is CASUS compliant with European data privacy laws? +

Yes, CASUS is fully compliant with both GDPR and the Swiss Federal Act on Data Protection (nFADP). It is hosted on ISO-27001-certified infrastructure and operates with a Zero Data Retention policy.

Does CASUS work with my existing software? +

CASUS integrates directly into Microsoft Word as an add-in, allowing you to use its features without leaving your document. The website also states that SharePoint integration is 'coming soon'.

What legal database does CASUS use for research? +

CASUS provides AI-powered research across a database of over 660,000 Swiss federal and cantonal court decisions, making it highly specialized for legal work within Switzerland.

Is CASUS suitable for legal teams outside of Switzerland? +

While the document review and contract benchmarking tools are broadly applicable, the legal research function is specifically tailored to the Swiss legal system. Its primary value is for firms operating in or dealing with the DACH region, particularly Switzerland.

Can I use CASUS for due diligence? +

Yes, CASUS includes an 'AI Data Room' feature designed for due diligence, allowing you to compare hundreds of documents in seconds.

Last reviewed: Reviewed June 2026 — Assessed MS Word integration, Swiss legal research capabilities, and pricing.

Plans & Pricing

Start today

Pro

CHF 125/mo

Per user/month. Includes document review, contract benchmarking, legal proofreading, AI research, and MS Word integration. No minimum contract period.

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Enterprise

Pricing on request

Tailored for teams and large organisations.

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