Text Mining API
Trained meticulously on our proprietary datasets, our text mining solution delivers 30% better performance* on average over open-source alternatives, while ensuring full transparency and accessibility from day one.
See how Lettria's Sentiment Analysis outperforms other options
Read a detailed analysis of the performance of the world's most widely used models for sentiment analysis tasks. See how Lettria compares and outperforms the rest.
Read our sentiment analysis benchmark
Connect with all your sources
Choose from an expansive collection of data connectors or simply import your own files in various formats.
To ensure privacy, your data is safeguarded in a secure environment only you have access to. This data can be conveniently reused across all of your current and future word processing projects.
Create and manage your datasets
The dataset manager gives you the power to oversee your sources to effortlessly collaborate between teams as well as repurpose the sources for additional NLP projects across your organization. Datasets are transformed into data assets.
A magic wand for text
Manually cleaning up data can be a pain, but our pain is your gain. We have worked hard to automatic this tedious task and make it available to all our users.
Lettria now offers a precise cleaning formula that can be applied to each data type which makes it easy to manage cluttered data, such as speech-to-text transcripts.
Frequently Asked Questions
Lettria is ideal for organizations in finance, insurance, healthcare, legal, and life sciences—anywhere unstructured or semi‑structured documents (contracts, claims, reports) must be processed with structure, clarity, and auditability
The platform includes dashboards for usage metrics, extraction accuracy, workflow monitoring, and audit logs—supporting compliance tracking and process visibility .
Lettria’s GraphRAG engine preserves original document structures and traces each extracted element back to its source. This enables explainable, auditable outputs—essential in regulated domains
Yes—our studio offers drag‑and‑drop document uploads, built‑in ML tools, prompt engineering, and guided AutoML via AutoLettria. Business users can spin up prototypes in days (not months) and deploy production flows via APIs
The platform is API-first, with over 50 native connectors (e.g., SharePoint, S3) and Power Automate logic app support. Lettria embeds into existing workflows via APIs and webhooks.
Data is hosted on European servers with end-to-end encryption and SSL/TLS. We’re GDPR-compliant and undergo regular audits with ANSSI collaboration—ensuring enterprise-grade privacy and trust
Our Knowledge Studio includes dictionary, taxonomy, and ontology modules. You can enrich dictionaries with auto-detected keywords and upload/import taxonomies or ontologies (.rdf, .owl, .skos) for editorial and collaborative enrichment
Lettria delivers a full suite of NLP and AI tools: OCR ingestion, text cleaning, text labeling, table parsing, classification, entity recognition, semantic search, batch annotation, prompt engineering, and robust analytics dashboards—designed for complex document workflows
See the Text Mining API in action
Start to accelerate your AI adoption today.
Boost RAG accuracy by 30 percent and watch your documents explain themselves.
