Because a text that is too smooth, too standardised or full of vague formulas can give the impression that it was produced without genuine legal reasoning.
In law, quality does not depend on style alone. It rests above all on precision, context, sources and the lawyer’s ability to explain why a rule applies.
A polished text can hide a weak analysis
A general-purpose AI can produce a fluent, well-structured and easy-to-read document. That does not, however, guarantee that the reasoning is sound.
The model can mix several legal systems, use concepts that sit poorly with Swiss law or propose clauses that are too general.
A professional appearance can therefore mask errors of substance. The more obvious the text appears, the greater the risk of reading it too quickly.
The lawyer’s role remains to check the reasoning, the sources and the relevance of each formulation.
The signs of overly artificial writing
Some AI-generated texts often use the same words or the same structures.
Terms such as “robust”, “global”, “fluent”, “crucial” or “foster” can for example appear very often without adding much information.
The problem does not come from the word itself, but from how it is used. Saying that a mechanism is “robust” has little value if the text does not explain what controls actually exist.
A good legal text should favour facts, rules and concrete consequences rather than general adjectives.
An overly standardised style can weaken the advice
A lawyer’s value does not come only from the ability to produce text quickly.
It rests on an understanding of the file, a way of assessing the risks and an ability to propose a strategy suited to the client.
A highly generic document can give the impression that it could be sent to any client without change.
AI is especially useful for preparing the work. The final version must reflect the context of the file and the professional’s reasoning.
Avoiding vague clauses
AI models sometimes produce formulations that look balanced but remain difficult to apply.
A clause may for example require the parties to maintain an “appropriate balance” between their interests without explaining what that balance means in practice.
In a contract, this type of wording creates uncertainty.
The lawyer must replace these general expressions with precise obligations, time limits, conditions and mechanisms that apply in the event of disagreement.
Watch out for concepts imported from other legal systems
Large language models are trained on content from many countries and many legal systems.
They can use notions drawn from US, British or French law even though the file is governed by Swiss law.
A formulation can look correct while being poorly suited to the Code of Obligations or to Swiss case law.
For a professional, it is important to check that the concepts, sources and vocabulary actually match the applicable legal system.
Copy-and-paste does not transfer responsibility
A lawyer remains responsible for the document they validate or send, even if part of the text was prepared with AI.
Copying a generated answer directly can introduce an error, a foreign rule or a formulation that does not match the file.
Human validation must cover the substance, not only spelling or style.
Our article on when AI efficiency becomes a flaw sets out in particular the risks linked to invented citations and insufficiently checked content.
Confidentiality matters as much as the quality of the text
The choice of tool also affects the security of the file.
Before sending confidential information to an AI, it is necessary to check where the data is processed, who can access it and whether it is used to train the models.
According to Silex, data is hosted in Switzerland by Infomaniak and client files are not used to train the models.
The measures stated are presented on the security and professional secrecy page.
Reviewing AI as a critical editor
A fluent text can give the impression that it is accurate. That is precisely why it needs to be reread with care.
The lawyer must identify vague terms, check the facts and ask for a source when an important legal statement appears.
If the tool speaks of an “in-depth analysis”, look at what actually makes it in-depth: which statutes, which decisions and which elements of the file were used?
The final style must reflect the professional’s reasoning, not the model’s drafting habits.
Integrating AI without losing your own style
AI can be integrated into everyday work without becoming the main drafter of the file.
It can help search for a source, summarise a decision, compare several documents or propose a first structure.
The professional then takes the result, checks the sources and adapts the text to the file and to the recipient.
The integration of Silex into WinLex and SkyLex and the partnership between Silex and MCR Solutions illustrate this approach, integrated into existing work.
What Silex offers
Silex is designed for legal research and analysis in Swiss law.
The tool aims to help the professional find sources, analyse files and prepare texts while leaving the final validation to the lawyer.
The features are presented on the Silex product page.
The Solo, Team and Enterprise plans are priced at CHF 149, CHF 490 and CHF 895 per month respectively. Details appear on the Silex pricing page.
The private bank Bordier & Cie also uses Silex for its legal research.
The partnership between Silex and EXPERTsuisse concerns in particular audit, tax and fiduciary professionals.
In May 2026, Silex also won the Berlin semi-finals of The Pitch by Deel.
The solutions by practice present the various uses by profession.
Before validating a text prepared with AI
- Check the applicable law: do the concepts used actually match Swiss law?
- Remove vague wording: replace general terms with precise obligations or facts.
- Check the sources: can every important legal citation be found?
- Reread the style: does the text really look like your way of writing and advising?
- Check the data: has the information in the file been processed in a suitable environment?
Our article on AI and data protection sets out the confidentiality questions in more detail.
In short
AI can speed up drafting, but a text that is too smooth or too generic can weaken the credibility of the advice.
The problem is not using AI. It appears when the professional takes the result without checking the law, the sources, the style and the context of the file.
The right approach is to use AI to prepare and structure the work, then leave the final drafting and the decision to the lawyer.
To test Silex on a concrete case, you can book a demo. For personal use, see our guide on legal AI for individuals.
FAQ
Can AI draft a Swiss contract on its own?
It can help prepare a draft, but human supervision remains necessary to check the applicable law, the clauses and the sources.
Where does Silex host the data?
According to Silex, data is hosted in Switzerland by Infomaniak.
