legalis.ch and Silex are two Swiss solutions for legal professionals, but they do not address exactly the same need. legalis.ch is a legal research platform and content database built around the Basler Kommentare, the Commentaire romands, specialist literature, journals, case law and legislation. Silex is a Swiss legal AI designed for legal research, analysis and reasoning.
The comparison should therefore distinguish two approaches: legalis.ch as a document database and research environment enriched by AI tools, including elisa and Swiss-Noxtua; Silex as a legal AI assistant designed to turn a Swiss law question into a structured, sourced and usable answer.
Quick comparison: legalis.ch and Silex
legalis.ch and Silex share one point: both target Swiss legal work. Their main difference lies in the workflow. legalis.ch gives access to specialized legal content and research tools. Silex supports reasoning more directly: ask a question, identify relevant sources, understand their scope and prepare an answer.
Positioning
legalis.ch
Swiss legal database and connected research environment for legal practice.
Silex
Swiss legal AI focused on research, analysis and legal reasoning.
Sources
legalis.ch
Basler Kommentare, Commentaire romands, specialist literature, journals, case law and legislation.
Silex
Structured and verifiable Swiss legal sources to produce sourced answers.
AI
legalis.ch
elisa for legal questions with legalis sources; Swiss-Noxtua for research, document analysis and drafting.
Silex
Legal AI assistant designed to analyze, synthesize and reason in Swiss law.
Main use
legalis.ch
Consult, search, cite and use specialized legal content.
Silex
Obtain a structured, sourced legal analysis adapted to a question or matter.
Confidentiality
legalis.ch
Detailed guarantees mainly concern Swiss-Noxtua: data processed and stored on Swiss servers, no use for AI training according to its FAQ.
Silex
Swiss hosting, confidentiality and zero training on customer data.
What is legalis.ch?
legalis.ch presents itself as a legally connected platform for efficient legal work. Its homepage states that legalis brings together central content for daily practice: Basler Kommentare, Commentaire romands, specialist literature, journals, Federal Supreme Court decisions, case law and legislation.
legalis also highlights legalis Open, which gives access to the entire legalis database with all modules. The platform emphasizes content that is quickly accessible, intelligently linked and regularly updated. It therefore presents itself first as a specialized Swiss document database, enriched by research and AI tools.
Research and navigation in legalis.ch
The “Arbeiten mit legalis” page describes several working features: exporting and printing documents, documents citable as in the printed work, favorites, document and search history, simultaneous work with several documents, navigation by references and links, link overview and display of passiv citations or relevant documents.
legalis also states that all content is indexed by full-text search, that semantic methods improve the relevance of results and that quick search automatically recognizes links and citations. Results can then be filtered and reorganized.
elisa: legalis’ legal chatbot
legalis presents elisa as an AI-based chat function. According to the official page, elisa lets users ask legal questions in a dialogue and obtain real-time answers based on the legalis database, including commentaries, specialist literature, journals, laws and decisions.
The elisa page also states that sources are linked in the text: one click leads to the corresponding passage on legalis. The elisa subscription includes a legalis Open license, with access to the platform’s commentaries, manuals and specialist journals, as well as laws and federal and cantonal case law.
Swiss-Noxtua: the AI workspace linked to legalis
The legalis offer also mentions Swiss-Noxtua as a “Legal AI Workspace”. According to legalis’ offer page, Swiss-Noxtua includes AI-assisted legal research, document analysis, drafting, Word Add-In, legalis Open and elisa. The Swiss-Noxtua page states that the tool works with legalis Open content and official Swiss legal sources, without relying on unverified Internet sources.
The Swiss-Noxtua FAQ also states that users can ask questions in natural language and obtain structured answers with links to commentaries, laws, case law and specialist journals from legalis. It specifies that users’ own documents can be uploaded for analysis, comparison or identification of inconsistencies.
Silex: Swiss legal AI focused on reasoning
Silex starts from a different need: helping legal professionals turn a legal question into a usable analysis. The objective is not only to provide access to a document database, but to help search, understand, synthesize and structure an answer in Swiss law.
In practice, this changes the user experience. A lawyer, notary or in-house counsel does not always want to browse a database or a commentary; they often want to quickly understand what the relevant sources say, which arguments to retain, which limits to check and how to formulate an answer. This role as a reasoning assistant is what Silex puts at the center.
To go further, see legal AI, legal analysis and AI case law.
Sources: doctrine, case law and legal answer
legalis.ch has a clear document advantage for certain doctrinal content, particularly the Basler Kommentare, the Commentaire romands, journals and specialist literature. For research where doctrine and commentaries play a decisive role, this access can be central.
Silex is positioned more around the ability to build a sourced legal answer. This does not replace the lawyer’s review of sources, but it saves time in formulating an analysis, understanding a problem and preparing an opinion or note.
Confidentiality and security
The legalis pages mainly describe content, access and features. The most detailed security guarantees are published on Swiss-Noxtua. Its FAQ states that data is processed and stored exclusively on Swiss servers, that data is not used for AI training, that documents and queries are used only to process the current request, and that the system is designed to respect professional secrecy.
The same FAQ states that Swiss-Noxtua is certified, among others, ISO 9001, ISO/IEC 27001, ISO/IEC 27018, ISO/IEC 27017, BSI C5, ISO/IEC 42001, KAIND and TISAX, and that a SOC 2 Type II report can be requested by organizations with compliance requirements. This information concerns Swiss-Noxtua, not necessarily every use of legalis.ch outside that workspace.
Silex also emphasizes confidentiality, Swiss hosting and zero training on customer data. For any legal solution, contractual guarantees should be checked: hosting, subprocessors, logs, retention, deletion, operator access and data use.
When legalis.ch may be the right choice
legalis.ch may be particularly relevant if your priority is access to recognized Swiss commentaries and legal publications: Basler Kommentare, Commentaire romands, manuals, specialist journals, decisions and legislation. For in-depth doctrinal research, verification of commentaries or consultation of specialist publications, legalis.ch is an important document tool.
legalis.ch may also fit if you want a modular database or legalis Open, with the possibility of adding elisa or moving to Swiss-Noxtua for broader AI uses: assisted research, document analysis and drafting.
When Silex may be the right choice
Silex may be more suitable when your main need is to quickly obtain a structured, sourced and understandable Swiss legal answer. Instead of starting from a commentary or a list of results, you start from a legal question, then Silex helps build the analysis.
Silex is also relevant for teams that want an assistant focused on daily practice: source research, synthesis, reasoning, preparation of a note, case law analysis or clarification of a point of law. For professional use cases, see also AI for lawyers and AI notary.
legalis.ch vs Silex: how to decide?
- Doctrine: if you need legalis commentaries, journals and specialist works, legalis.ch is highly relevant.
- Document research: if you want to browse a structured legal database, legalis.ch directly addresses that need.
- Legal question-answering: if you want to start from a question and obtain sourced analysis, Silex is designed for that use.
- AI integrated with legalis: if you want a chatbot based on legalis, elisa is the option to consider; for a broader workspace, Swiss-Noxtua is linked to legalis Open.
- Confidentiality: compare the exact contractual guarantees, especially when mandate data, trade secrets or client documents are involved.
To evaluate Silex on concrete Swiss law cases, you can book a demo. If you also compare with general AI tools, ChatGPT vs Silex explains why Swiss legal specialization changes the use case.
FAQ: legalis.ch vs Silex
Is legalis.ch a legal AI?
legalis.ch is first a legal database and research platform. It integrates or offers AI tools such as elisa, and the legalis offer also mentions Swiss-Noxtua as an AI workspace linked to legalis Open.
What is the main difference between legalis.ch and Silex?
legalis.ch gives access to specialized legal content and research tools. Silex is a Swiss legal AI focused on building sourced analysis and legal reasoning.
Does elisa cite its sources?
The official elisa page states that answers are based on the legalis database and that sources are linked in the text, with access to the corresponding passage on legalis.
Does Swiss-Noxtua use data to train AI?
The Swiss-Noxtua FAQ states that documents and queries are used only to process the current request, without storage or use for AI training.
Which tool should you choose for Swiss legal research?
If your priority is access to doctrine and legalis commentaries, legalis.ch is highly relevant. If you are looking for sourced analysis starting from a legal question, Silex is designed for that use.
