RAGFlow
Deep document understanding — tables, images, multi-language
The top alternatives to LlamaIndex in the RAG Frameworks space, compared on features, pricing, and what they're best at.
LlamaIndex is a developer-focused platform providing comprehensive AI agent frameworks and document processing tools with modular components for building enterprise-grade document automation solutions. The platform enables organizations to transform unstructured documents into actionable intelligence through agentic OCR and AI workflows, with LlamaParse supporting 90+ file types and handling complex layouts, embedded images, multi-page tables, and handwritten content extraction. LlamaIndex offers an event-driven Workflows orchestration engine for multi-step AI processes with async-first architecture, alongside Python and TypeScript SDKs with pre-built connectors for LLMs, databases, and vector stores. The platform has processed over 500M+ documents with 25M+ monthly package downloads, serving 300k+ LlamaParse users including notable clients like Carlyle, Salesforce, and Rakuten.
RAGFlow
Deep document understanding — tables, images, multi-language
Unstructured
Ingests 65+ file formats: PDFs, DOCX, PPTX, HTML, images, emails
Haystack
Modular RAG framework
Reducto
Vision parsing
Pathway
Rust-powered streaming engine — millions of data points/sec
Carbon (Perplexity)
Data connectors
Vectara
R2R
RAG engine
Docling
Converts PDFs, DOCX, PPTX, HTML, images to structured JSON/markdown
Chunkr
Captain
Scalable knowledge search
WhyHow
Compresr
Context compression
One platform for routing, observability, tracing, and evals across every LLM provider.