Legora and Silex are two artificial intelligence solutions for legal professionals, but they do not address exactly the same need. Legora presents itself as an “agentic operating system” for legal work, with workflows, research, collaboration, integrations and document review tools. Silex is a Swiss legal AI designed for legal research, analysis and reasoning in Swiss law.
To compare Legora and Silex seriously, you therefore need to look at concrete uses: automating broad and collaborative legal workflows, or using a specialized assistant to search, understand and apply Swiss legal sources.
Quick comparison: Legora and Silex
Legora and Silex both serve legal professionals, but with different priorities. Legora targets a connected system for executing legal work at scale, with agents, document review, research, collaboration and integrations. Silex focuses on a Swiss legal assistant experience for research, synthesis and source-grounded analysis.
Positioning
Legora
Collaborative AI platform for legal work, presented as an agentic operating system.
Silex
Swiss legal AI dedicated to research, analysis and reasoning in Swiss law.
Use cases
Legora
Workflows, legal research, document review, Word Add-In, tabular review, collaboration and client portal.
Silex
Swiss legal research, source-grounded analysis, synthesis and preparation of legal answers.
Sources
Legora
Legora states that it offers jurisdiction-aware legal research grounded in real sources and structured citations.
Silex
Silex emphasizes structured and verifiable Swiss legal sources.
Swiss law
Legora
Legora presents itself as an international platform used across several markets, without publicly positioning itself as exclusively dedicated to Swiss law.
Silex
Silex is designed specifically for professionals working with Swiss law.
Security
Legora
Legora states SOC 2 Type II, ISO 27001, ISO 42001, GDPR, encryption, data separation and zero AI training on data.
Silex
Silex highlights Swiss hosting, confidentiality and zero training on customer data.
What is Legora?
Legora presents itself as collaborative AI for lawyers and as a connected system for legal work. Its homepage describes the Legora aOS as a system that connects information, communication and execution of legal work. The platform covers several work surfaces: Word Add-In, Outlook Add-In, editor, mobile app, tabular review, workflows, legal research, Portal, Monitors, Agent and Lists.
The product page describes Legora as a collaborative AI workspace for lawyers, with tools that fit into the way they already work. It mentions research, summarization, document comparison, insight extraction, document review and drafting in Word.
Legora aOS: an agent and workflow logic
Legora describes its aOS as an “agentic operating system for legal work”. The official page states that the system facilitates the flow of information, communication and execution of legal work. It also mentions an orchestration layer that turns large language model technology into legal domain-specific agents, with tool routing, control flow, memory management, model selection and guardrails.
The same page highlights legal-specific capabilities such as jurisdiction-aware legal research grounded in real sources, structured citations, document understanding, tabular review at scale and search across DMS and knowledge bases. This positioning is broader than a simple legal chatbot: Legora aims to execute multi-step workflows.
Leya became Legora
Legora published a press release on February 19, 2025 stating that Leya had become Legora. In that announcement, the company explains that the name change reflects its evolution toward a collaborative platform for legal professionals. The same announcement states that the first version was developed with lawyers in Stockholm, notably through MSA Innovation with Mannheimer Swartling.
Legora also states that it was working with more than 200 firms globally at that date, with thousands of daily active users. These figures come from Legora’s press release and should be read as company-provided information.
Legora Portal: law firm-client collaboration
Legora also announced Legora Portal, a platform intended to transform collaboration between law firms and in-house legal teams. According to the official announcement, Portal allows firms to share AI workflows, playbooks, documents, research and collaboration spaces with clients in a permission-driven environment.
The announcement states that Legora Portal was in the design partnership phase with several customers and that general availability was planned for Q1 2026. It also states that Legora serves more than 400 law firms and legal teams across more than 40 markets. Again, these are figures published by Legora.
Silex: legal AI designed for Swiss law
Silex addresses a more targeted need: helping legal professionals work with Swiss legal sources, understand their scope, structure an analysis and prepare a usable answer. Swiss law requires particular attention to federal, cantonal, case law and multilingual sources.
The difference from an international platform like Legora therefore lies in specialization. Silex is not intended to replace every workflow tool in a global law firm; it aims to make Swiss legal research and reasoning faster, clearer and more reliable.
To go further, see legal AI, legal analysis and AI case law.
Sources and reliability: central for legal professionals
Legora states that its aOS offers jurisdiction-aware legal research grounded in real sources, with structured citations. This promise matters because AI-assisted legal research cannot be limited to fluent answers: sources must be controllable by a legal professional.
For Swiss legal practice, the question becomes more precise: does the tool work with the right Swiss sources, in the right languages, with verifiable references and a method adapted to local legal reasoning? This is precisely the ground on which Silex positions itself.
Security and confidentiality
Legora publishes detailed information about its security measures. Its documentation mentions an ISO/IEC 27001:2022 certified information security management system, backups every 4 hours, least privilege, multi-factor authentication for systems containing highly confidential data, AES-256 encryption at rest and at least TLS 1.2 in transit.
Legora’s public pages also mention SOC 2 Type II, ISO 42001, GDPR, HIPAA and zero AI training on data. For a law firm or legal department, these elements must be reviewed in the contract and security documentation: hosting, subprocessors, logs, retention, data access and model-use terms.
Silex also emphasizes confidentiality, Swiss hosting and zero training on customer data. For professionals subject to legal privilege or professional secrecy, this dimension should never be treated as a mere marketing claim.
When Legora may be the right choice
Legora may be relevant for a law firm or legal department that wants to deploy AI across a broad scope: workflows, document review, research, integration with existing tools, internal collaboration and collaboration with clients. It is a platform approach, useful when the goal is to transform several legal processes at once.
Legora may also fit organizations that want to build reusable AI workflows, integrate playbooks, leverage internal document bases and orchestrate complex tasks. The choice then depends on the team’s maturity, the quality of internal data and the ability to deploy a new work environment.
When Silex may be the right choice
Silex may be more suitable when the main need is Swiss legal research: asking a question, finding relevant sources, checking references, understanding case law and preparing a clear answer. For a Swiss lawyer, notary, in-house counsel or law student, local specialization is often more important than a very broad workflow system.
Silex is also relevant if the team wants adoption that is more directly centered on research and legal reasoning, without first deploying a complete collaborative platform. For professional use cases, see also AI for lawyers and the Silex product.
Legora vs Silex: how to decide?
- Scope: collaborative multi-workflow platform or Swiss legal research assistant?
- Sources: international legal research and internal knowledge, or structured Swiss sources?
- Daily use: automating complex workflows or getting source-grounded legal analyses?
- Organization: global firm, international legal department or Swiss team focused on local law?
- Security: check certifications, hosting, subprocessors, access and absence of training on your data.
To evaluate Silex on your own Swiss law matters, you can book a demo. If you compare several types of AI, ChatGPT vs Silex also explains why a general AI, an international legal platform and a Swiss legal AI do not address the same need.
FAQ: Legora vs Silex
Is Legora designed for legal professionals?
Yes. Legora presents itself as a collaborative AI platform for lawyers and legal professionals, with research, workflows, document review, integrations and collaboration.
Is Legora specialized in Swiss law?
Legora’s public sources show an international platform for legal work, with jurisdiction-aware research. They do not present Legora as a solution exclusively dedicated to Swiss law.
What is the main difference between Legora and Silex?
Legora is a collaborative and agentic platform for executing legal workflows. Silex is a Swiss legal AI focused on research, analysis and reasoning in Swiss law.
Does Legora use customer data to train AI?
Legora’s public pages state “Zero AI training on your data”. Contractual guarantees, subprocessors and retention settings should nevertheless be checked in the documents applicable to your subscription.
Which tool should you choose for Swiss legal research?
If the main need is Swiss legal research with verifiable sources and reasoning adapted to the local context, Silex is designed for that use. Legora may be more relevant for an organization that wants to deploy a collaborative AI platform across many legal workflows.
