Lettria

Lettria is an enterprise AI platform built around a Graph Context Layer for regulated industries. It unifies structured data and unstructured knowledge into ontology-powered knowledge graphs, giving AI systems a grounded, traceable and trusted context to reason over. Instead of relying on vector search alone, Lettria combines GraphRAG, graph-native document intelligence and production-grade graph agents to deliver answers that can be inspected, verified and defended in compliance-heavy environments. Lettria addresses the limits of vector retrieval: where standard RAG struggles to connect multiple sources, handle structured business data or explain its answers, Lettria's graph approach supports multi-hop reasoning, numerical and temporal reasoning, and full provenance on every response. The platform converts messy documents, tables and SAP exports into queryable knowledge graphs with auto-generated, version-controlled ontologies - built in days, not months, with business experts kept in the loop. Benchmarks show a 30%+ accuracy improvement, up to 400× faster processing than general LLMs, and 81.7% overall accuracy in published evaluations. Lettria offers two entry paths: Knowledge Studio, a graph-native document intelligence platform for knowledge and business teams, and Perseus, an infrastructure for developers building production-grade graph agents. The platform serves finance, healthcare, legal and engineering organizations, with customers including Alfa Laval, WiseCube and Imago Platform. For complex knowledge problems, Lettria also provides forward-deployed engineers, ontology experts and applied AI specialists to take projects from prototype to production.