The two solutions meet different needs.
Omnilex offers a complete legal workspace, from research to drafting. Silex focuses on legal research and analysis in Swiss law, with verifiable answers and data hosted in Switzerland.
The choice therefore depends mainly on your practice, your confidentiality requirements and the type of legal sources you use.
Omnilex: a complete legal workspace
Omnilex is designed as a workspace for legal professionals.
The platform aims to bring several tasks together in a single interface:
- legal research;
- analysis of decisions;
- document drafting;
- translation;
- work on complex matters.
Omnilex works with Swiss and international sources and also offers features for Microsoft Word.
This approach particularly suits professionals who want to centralise several stages of legal work in one environment.
Silex: an assistant specialised in Swiss law
Silex is designed for professionals who work mainly with Swiss law.
The tool helps turn a legal question into a structured, sourced answer, while leaving final validation to the legal professional.
In particular, it can be used to:
- search for legal sources;
- analyse a complex question;
- summarise decisions;
- prepare a memo or a first draft;
- analyse the documents in a case file.
The main features are presented on the product page.
Two different approaches to legal research
Omnilex works with a corpus that includes Swiss and international laws, decisions and commentaries.
This coverage can be useful for matters involving several jurisdictions.
For its part, Silex states that it has more than 800,000 Swiss legal sources, including legislation and case law in particular.
Answers come with references so that the legal professional can check the sources used.
Silex does not, however, distribute commentaries or journals from publishers. To compare this approach with a legal database, see our article Swisslex or Silex.
Analysing and drafting documents
Both solutions let you work on internal documents.
Omnilex can, for instance, analyse, translate and draft documents while keeping their formatting.
With Silo, Silex can also analyse the firm’s documents, for example:
- contracts;
- internal notes;
- client files;
- precedents;
- draft documents.
Answers can thus take into account both the legal sources and the content of the case file.
According to Silex, files placed in Silo are not used to train its models.
Confidentiality and data hosting
Data security is essential for firms bound by professional secrecy.
Omnilex states that it uses Microsoft Azure in Zurich and processes data in Switzerland as well as in certain European Union countries.
Silex states that it hosts data in Switzerland with Infomaniak and does not use client files to train its models.
The difference lies mainly in the infrastructure and in where the data may be processed.
Silex’s safeguards are presented on the security page. The legal framework is explained in our article AI and data protection.
Integration with the firm’s tools
Omnilex offers APIs and connectors to integrate with various systems and software.
Silex is more focused on integrating with the tools that Swiss professionals already use.
The integration of Silex into WinLex and SkyLex, for example, makes it possible to run a search without leaving the practice management software.
The partnership with MCR Solutions also aims to bring AI-assisted legal research into existing processes.
You can also read the announcements about Silex and EXPERTsuisse and Bordier & Cie.
Checking the legal reasoning
An AI can produce an incorrect answer or rely on an unsuitable source. The legal professional must therefore always be able to check the references used.
Silex links its answers to verifiable sources and, thanks to Silo, can take the context of the case file into account.
The tool prepares the analysis, but the professional remains responsible for the reasoning and the final decision.
This method is presented in more detail in our article on AI-assisted legal analysis.
Pricing
Omnilex offers Individual, Team and Enterprise tiers. The terms depend on the number of users and the organisation’s needs.
Silex offers several monthly plans:
- Solo: CHF 149 per month for one user;
- Team: CHF 490 per month for up to five users;
- Enterprise: CHF 895 per month for up to ten users.
A free trial also lets you test Silex before choosing a plan.
The plans are detailed on the pricing and solutions pages.
Omnilex or Silex: the main differences
To compare other solutions, see our article on legal AI alternatives.
In short
Omnilex and Silex meet two different needs.
Omnilex is especially suited to professionals who want to bring research, analysis and drafting together in a single environment, particularly for international matters.
Silex focuses on research and analysis in Swiss law, with sourced answers and data hosted in Switzerland.
Your choice will therefore depend above all on your practice, the kind of matters you handle and your confidentiality requirements.
For personal use, see our guide on legal AI for individuals.
To test Silex on a real legal question, you can book a demo.
