CASUS vs Omnilex
How CASUS compares to Omnilex
Two Swiss legal AIs for different jobs. Omnilex is the specialist when legal research is your main use case. CASUS is the all-rounder for document work in Microsoft Word, drafting, reviewing and polishing, with legal research built in when you need it.
Free 14-day trial
No credit card required
5-minute setup
Document Workflow
Built to work inside the document
Both are Swiss, both keep your data in Switzerland, and both live inside Microsoft Word. The difference is the main job: Omnilex is built for legal research, while CASUS is the all-rounder for document work, drafting, reviewing and finalising, and it handles research too when you need it.
Capability
CASUS
Omnilex
Primary focus
All-round document work
Legal research
Native Microsoft Word add-in
✓
✓
Work in your live document
✓
✓
Swiss data residency
✓
✓
German & English interface
✓
✓
Legal Research
Research is Omnilex’s specialty
If legal research is your main use case, Omnilex is the specialist, with deep Swiss legal Q&A and citations. CASUS includes legal research too, built into the same Word workflow, so you can check a point without leaving your draft, but it is built to be an all-rounder, not a research tool alone.
Capability
CASUS
Omnilex
Depth of legal research
Built in
Specialist focus
Source citations & reasoning
✓
✓
Interface languages
German & English
German & English
Documents handled in
Any language
Any language
Statutes, decisions & commentaries
✓
✓
Built for Swiss law
✓
✓
Document Toolkit
Built for the full document workflow
From drafting to review to a region-specific proofread, CASUS covers the everyday document work directly in Word. Omnilex covers much of this too; the proofread and the document-first design are where CASUS pulls ahead.
Capability
CASUS
Omnilex
Primary design
Document-first
Research-first
Clause Drafting in Word
Full
Assisted
Contract review & risk analysis
✓
✓
Benchmark against your playbooks
✓
✓
Region-specific legal proofreading
✓
—
Agentic editing in your document
✓
—
Multi-document data room
✓
Grid
Pricing & Access
Lower price, monthly flexibility
Both are priced per user per month. CASUS comes in lower, at CHF 100 per seat, with no seat minimum and self-service signup for the whole team, directly in Word.
CASUS
CHF 100
per seat / month · €108 in the EU · billed annually · all modules included
✓
Lower price per seat
✓
Free trial & self-service signup
✓
No seat minimum
✓
All-round document toolkit
✓
Hosting in Switzerland
Omnilex
CHF 180
per user / month · CHF 150 on a team licence · 14-day trial
—
Higher price per seat
—
Research-first focus
—
No region-specific proofread
—
Less of an all-round document tool
* Pricing as published by each provider (2026).
Frequently asked questions
Is Omnilex a good fit for Swiss law firms?
What's the difference between CASUS and Omnilex?
How much does Omnilex cost?
Is CASUS or Omnilex better for document work?
Are CASUS and Omnilex both hosted in Switzerland?
Does CASUS do legal research like Omnilex?
Can I try CASUS instead of Omnilex?
The bottom line
Two strong Swiss tools — pick by your workflow
Omnilex is an excellent, research-first Swiss workspace, and if legal research is the main use case, it is the specialist. But if you want one tool for the everyday document work, drafting, reviewing, proofreading and finalising in Word, that can also handle research, CASUS is the all-rounder, with a region-specific proofread and a lower, monthly price.
