About Leyli.ai

A knowledge engine company for any domain where trust, evidence, and reasoning matter.

Leyli is a Hamburg, Germany based knowledge-engine company building systems that transform expert documents, enterprise sources, and domain ontologies into explainable knowledge graphs, training data, APIs, and GraphRAG packages for human experts, generative AI products, and agentic AI workflows. The Biomedical Demo is focused on biomedical and medical knowledge, but the same architecture is designed for healthcare, finance, commerce, law, education, manufacturing, and internal enterprise intelligence.

Why We Started

Connecting expert knowledge with trustworthy AI.

Valuable expert knowledge is often trapped inside documents, disconnected systems, and domain-specific terminology. At the same time, AI systems increasingly depend on information they cannot reliably explain or verify. Leyli was started to connect these worlds: transforming complex information into structured, evidence-backed knowledge that people and AI can inspect and trust.

Company mission

Make expert knowledge computable, explainable, and usable by people and AI systems.

Leyli connects extraction models, ontologies, relation evidence, graph interfaces, GraphRAG, annotations, and ETL/ELT delivery into one workflow. Customers can start with biomedical documents and expand the same engine to any knowledge-heavy domain that needs traceable reasoning instead of black-box answers.

Our Vision

We envision a future in which organizations can build, preserve, and reuse their knowledge as reliable infrastructure for people, applications, language models, and intelligent agents.

We do not just build knowledge graphs. We build the knowledge infrastructure that makes them useful.

Our Principles

How we build Leyli.

Evidence first Every graph, answer, and export should trace back to the source text, relation, and ontology context that produced it.

Domain adaptable The engine can connect different ontologies, taxonomies, schemas, and data sources without locking customers into one vertical.

AI-ready by design Leyli packages structured knowledge for GraphRAG, agentic AI, analytics, training data, and human expert review.

The Leyli Team

A focused team building knowledge infrastructure with care, discipline, and ambition.

Leyli is shaped by people who believe the next generation of AI needs more than retrieval and fluent answers. We are building systems that make knowledge explainable, traceable, and useful for experts, builders, and organizations.

Passionate about trustworthy AI We care deeply about AI systems that can show their evidence, explain their reasoning context, and earn user confidence.

Built across disciplines Our work brings together knowledge engineering, biomedical AI, data pipelines, ontologies, graphs, product design, and practical software delivery.

Focused on real-world value We design Leyli for teams that need knowledge they can inspect, reuse, validate, and connect to serious AI workflows.

Work with Leyli

Talk to us about your documents, ontology, or AI product.

Use the contact page to send feedback about the Biomedical Demo, request a pilot, or discuss a knowledge engine for your domain.

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