Unstructured
FreeConvert documents to structured data effortlessly.
FreeFree tier
About Unstructured
Unstructured is an open-source library that provides pre-processing tools for ingesting and transforming unstructured data from a wide variety of file types into clean, structured formats optimized for large language models (LLMs). It supports over 60 file types including PDFs, HTML, Word documents, images, and more, offering modular functions for parsing, enriching, chunking, and embedding data. The library also includes connectors and pipelines for production-grade workflows, and features Unstructured Transform MCP for agent-based document processing. It is free to use with a cloud service that offers 15,000 free pages per month.
Key Features
Supports 60+ file types including PDFs, HTML, Word docs, images, and more
Modular functions for ingesting, parsing, enriching, chunking, and embedding data
Open-source library with connectors for various data sources
Unstructured Transform MCP for agent-based document processing
Production-grade pipelines with advanced features like chunking and embedding
Designed to streamline data processing workflows for large language models
Pros & Cons
Pros
- Open-source and free to use, with a generous free tier for cloud services
- Supports a wide range of file formats (60+) out of the box
- Modular architecture allows flexible integration into existing data pipelines
- Actively maintained by Unstructured.io with regular updates and community support
- Designed specifically for LLM-ready data preparation
Cons
- Cloud service has usage limits (15,000 free pages/month, then $0.03/page) beyond open-source capabilities
- May require technical setup and self-hosting for full control
- Advanced production features are behind a paid platform tier
Best For
Pre-processing unstructured documents for retrieval-augmented generation (RAG) pipelinesConverting diverse file types into structured inputs for vector databases and LLM applicationsAutomated data ingestion and enrichment for enterprise document workflowsBuilding AI agents that can parse and structure files in context
FAQ
What file types does Unstructured support?
Unstructured supports over 60 file types including PDFs, HTML, Word documents, images, scanned files, and many more.
Is Unstructured free to use?
The open-source library is free. Unstructured also offers a cloud service (Transform MCP) with 15,000 free pages per month, then $0.03 per page.
How does Unstructured help with LLMs?
It transforms messy unstructured data into clean, structured formats that are ready for language models, including parsing, enriching, chunking, and embedding.