Pyyan / Compare / Unstructured vs LangChain & LangGraph vs RAGFlow
Unstructured vs LangChain & LangGraph vs RAGFlow
3 of 5RAG & Knowledge Graphs · verified 13 Aug 2026
| Specification | Unstructured | LangChain & LangGraph | RAGFlow |
|---|---|---|---|
| Summary | Gets documents into a shape a pipeline can use. | Orchestration, with retrieval as one piece. | Visual pipeline builder, deep document understanding. |
| Kind | Library | Framework | Platform |
| Graph | No | Via integrations | Yes |
| Language | Python | Python, TypeScript | Python |
| Licence | Apache 2.0 | MIT | Apache 2.0 |
| GitHub stars | ~12k | ~120k | ~35k |
| Category | RAG & Knowledge Graphs | RAG & Knowledge Graphs | RAG & Knowledge Graphs |
| Official | Unstructured ↗ | LangChain ↗ | InfiniFlow ↗ |
Highlighted rows are where these differ.
Unstructured
- PDF, DOCX, HTML, email and more into elements
- The unglamorous layer most RAG failures actually come from
Best for the ingestion step nobody enjoys writing.
LangChain & LangGraph
- LangGraph adds durable state and checkpointing
- Widely used, and widely argued about
Best for agents that retrieve as one step among many.
RAGFlow
- Strong document parsing built in
- The usual entry point for non-developers
Best for teams without a Python engineer.