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AI that understands your document
and delivers verified knowledge
Extract reliable insights from complex, high-risk documents with full traceability.
5 stars
Trusted by leading teams processing thousands of documents every month.
How Lettria solves the
RAG problem across industries
Traditional RAG fails on complex documents. Lettria delivers reliable, traceable intelligence.
Most RAGs lose structure with tables, diagrams, or multi-column layouts.
Lettria’s graph-based, layout-aware parsing keeps every element intact, preserving relationships and context so complex documents become fully accurate, queryable data sources.
Keyword search can’t handle multi-step, conditional numerical questions.
GraphRAG builds a semantic map of your knowledge, enabling reasoning across documents, applying constraints, and delivering answers that truly support decision-making.
Without structure, agents hallucinate and fail at complex workflows.
Lettria’s dynamic knowledge graph grounds agents in facts, enabling step-by-step reasoning, traceable decisions, and reliable execution in high-stakes environments.
From complex documents to actionable insights
Lettria’s four core modules work together to extract structure, build knowledge, and deliver fully traceable outputs, grounded in your own data.
Document Parsing
Extracts tables, diagrams, reading order, and multi-column layouts from the most complex PDFs.
Ontology Building
Automatically generates clean, domain-specific ontologies from your documents, no manual mapping required.
Text to Graph
Converts any text into a rich knowledge graph with entities, relations, and constraints.
GraphRAG
Combines graph retrieval with reasoning for transparent, interpretable outputs without hallucinations.
Trusted by leading teams
How leading teams boost accuracy, automation, and scalability with Lettria.
new classes added
Automated ontology enrichment at scale.
“Lettria accelerated our enrichment process and improved recommendation accuracy.”
articles processed
Scalable extraction for biomedical research.
“Lettria accelerated our enrichment process a“Lettria significantly improved the accuracy and scalability of our biomedical knowledge extraction.”nd improved recommendation accuracy.”
better accuracy
Faster, more accurate outcomes using GraphRAG.
“Lettria helped our experts avoid repetitive document analysis and deliver faster, more accurate results.”
Helping analysts cracking big issues in every industry
From clinical trials to compliance, GraphRAG extracts insight from complex data and documents, powering safe, fast, and evidence-based decisions.
Extract and structure financial data to speed up audit, risk, and compliance workflows.
Accelerate contract review and compliance by detecting key clauses and obligations.
Turn technical documents into queryable graphs for faster development and QA.
Meet Lettria Perseus, our new model.
Lettria Perseus, where precision meets speed: 30% more accurate than any other LLMs on graph generation, schema-valid graphs under 20 ms. Build trustworthy graph-AI at enterprise scale.
Work with our experts to build your knowledge layer.
Lettria combines expert support and proven methods to accelerate results, reduce risk and unlock analyst-level intelligence.
Connect Your Data
→ Defining project needs, stakeholders, and success metrics
→ Collecting your relevant documents and sources
→ Parsing unstructured data and structuring it
→ Designing your first ontology and knowledge graph with our experts.
Activate Insights
→ Prototype development & testing
→ Feedback loops using evaluation matrix
→ Continuing enriching ontology, improving relationships in the graph
Monitor & Improve
→ Final iteration completed, preparing the system for deployment
→ Integration into your information systems, production of API docs
→ Final result: A verifiable, trustworthy AI
Deep expertise, distilled into actionable insights.
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Build trustworthy, domain-grounded intelligence
Improve RAG accuracy by 30% and let your documents deliver precise, explainable results.