What is Lettria?

Lettria is an AI‑powered document intelligence platform that converts unstructured PDFs and other text formats into structured knowledge graphs, enabling users in regulated sectors such as healthcare, finance, legal, and engineering to retrieve precise, traceable answers from internal documents and external sources.

Its core modules—Document Parsing, Ontology Building, Text to Graph Pipeline, and GraphRAG—automatically extract tables, diagrams, reading order, domain entities, and relationships, then combine graph retrieval with vector search to eliminate hallucinations and improve retrieval‑augmented generation accuracy by up to 30%.

The platform supports API‑driven NLP services, including text mining and classification, that can be integrated into compliance monitoring, regulatory review, financial disclosure analysis, and technical troubleshooting workflows. By grounding responses in explicit source documents and maintaining audit‑ready provenance, Lettria facilitates evidence‑based research, reduces manual cross‑checks, and accelerates the deployment of trusted, enterprise‑scale AI assistants.

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Lettria's key features

Document Parsing of complex PDFs
Automatic Ontology Generation
Text to Graph knowledge graph creation
GraphRAG graph and vector retrieval
Private GPT chatbot fine-tuning
Text Mining API insights extraction
Text Classification API with ontology

Lettria use cases

Transform regulatory PDFs into structured knowledge graphs, enabling auditors to run traceable, query‑driven compliance checks in real‑time without manual data entry
Convert legal contract PDFs into graph‑based knowledge, allowing legal teams to retrieve specific clauses through vector search and ensure audit‑ready documentation
Extract tables and diagrams from scientific protocol PDFs into a knowledge graph, automating compliance monitoring for research ethics and regulatory approvals