Silex
Category: AI in Legal
An AI-powered 'virtual lawyer' platform designed to automate complex legal research, document drafting, and knowledge management with a focus on high-precision legal intelligence. Silex was founded in 2023. The company is led by Kyriaki Bongard. Based in Lausanne, Switzerland. Team size: 11-50. Total funding raised: $2.15M. Latest round: Pre-Seed. Key investors include Spicehaus Partners, Bloomhaus Ventures, Active Capital, Aperture Capital, Core Angels.
- Founded
- 2023
- Headquarters
- Lausanne, Switzerland
- Team size
- 11-50
- Total funding
- $2.15M
Value proposition
Solves the 'trust problem' in legal AI by providing verifiable, high-accuracy outputs through a proprietary legal knowledge infrastructure, reducing the risk of LLM hallucinations in professional workflows.
Products and solutions
AI Legal Research Agent, Automated Document Drafting & Review, Internal Legal Knowledge Management System, AI-Driven Legal Workflow Automation
Unique value
Built 'by lawyers, for lawyers' with a licensed Swiss attorney CEO (ex-Bonnard Lawson, KPMG) and proprietary full-stack legal AI infrastructure for source-grounded, hallucination-resistant Swiss legal research.
Target customer
Tier-1 law firms, boutique legal practices, and corporate legal departments.
Industries served
Legal Services, Corporate Law, LegalTech, Compliance & Regulatory
Technology advantage
Utilizes a proprietary legal knowledge infrastructure rather than acting as a simple wrapper for third-party LLMs, allowing for higher reliability and 'trustworthy' intelligence in high-stakes legal environments.
How they differentiate
Silex differentiates by solving the 'trust problem' in legal AI through a proprietary legal knowledge infrastructure. Unlike generic LLM wrappers, it uses a 'by lawyers, for lawyers' approach to ensure high-precision, hallucination-free outputs grounded in verified legal sources.
Main competitors
Harvey AI, Leya, Spellbook
Key partnerships
Geste Informatique SA (Agora Legal integration), timeSensor AG, EPFL Innovation Park (Lausanne)
Notable customers
Banque Cantonale de Genève (BCGE), Banque Bordier & Cie, 700+ law firms, notaries, tax advisors and corporate legal departments, 25+ banks, insurers and financial institutions (Switzerland)
Major milestones
Founded 2023 as first LegalTech from EPFL (Ex Nunc Intelligence SA), Built proprietary legal intelligence stack (custom models, ingestion, legal reasoning), Closed oversubscribed $2.15M Pre-Seed led by Spicehaus (Jan 2026), Enterprise adoption by BCGE and Bordier; 700+ legal/financial orgs (2026)
Growth metrics
700+ organizations using Silex; 800,000+ indexed Swiss/international legal sources; 25+ banks/insurers/financial institutions in collaboration; LinkedIn ~21 employees; expanding German-language and DACH reach from Lausanne/EPFL base.
Market positioning
High-precision Legal AI challenger for tier-1 law firms and corporate legal departments.
Geographic focus
Switzerland, DACH region (Germany, Austria, Switzerland), and broader Europe.
Patents and IP
Proprietary legal knowledge infrastructure and NLP architecture (no specific public patent filings disclosed as of early 2025).
About Kyriaki Bongard
Kyriaki Bongard is a licensed attorney, Honorary Member of the Vaud Bar Association, and Lecturer at the Faculty of Law of the University of Neuchâtel. She previously worked as a lawyer at Bonnard Lawson International Law Firm and at KPMG, with expertise in finance, law, and tax. She co-founded Ex Nunc Intelligence SA (Silex) as the first LegalTech spin-off from EPFL.
Latest news about Silex
- Swiss legal AI startup Ex Nunc Intelligence has secured 2.15 million dollars in an oversubscribed pre-seed round led by Spicehaus Partners to scale its Silex platform. The system differentiates itself
- Swiss startup Ex Nunc Intelligence raised 1.8 million Euro in a pre-Seed round to scale Silex, its proprietary legal AI infrastructure. Silex uses a custom stack to integrate public laws with secure,
More AI in Legal companies
Official website: https://silex.legal