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Marker vs LlamaIndex

MarkerLlamaIndex

Convert PDFs and documents to clean Markdown.

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Data framework for LLM apps and knowledge agents

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Votes00
PricingFreemiumFreemium
CategoryDocument AiAi Agents
Tags
practical-ossopen-sourcedocument-airag
llm-frameworkragdocument-parsingopen-sourceknowledge-agents
Best for—
  • Document-heavy RAG applications
  • Enterprise knowledge agents
  • Teams needing reliable PDF parsing
Pros
  • Handles many input formats (PDF, images, DOCX, PPTX, XLSX, HTML, EPUB) and outputs Markdown, JSON, HTML, or chunks sized for RAG
  • Preserves structure: tables, equations as LaTeX, code blocks, reading order, and image extraction, with headers/footers removed
  • Selective OCR keeps it fast by only invoking the vision model on bad or scanned pages, with a CPU-only no-OCR path available
  • Optional --use_llm hybrid mode works with Gemini, Claude, OpenAI-compatible, Azure, Vertex, OpenRouter, or local Ollama models
  • Apache-2.0 code with CLI, Python API, batch processing, and a simple API server
  • Open-source frameworks are free (MIT)
  • Strong focus on retrieval and data quality
  • LlamaParse excels at complex document parsing
  • Managed LlamaCloud for production data workflows
  • Python and TypeScript support
Cons
  • Model weights are not freely commercial: a modified OpenRAIL-M license caps free use at under $5M funding/revenue and requires paid licensing above that
  • Best accuracy needs a GPU plus a local inference server (vLLM via Docker, or llama.cpp on CPU/Apple Silicon), adding setup
  • Very complex layouts with nested tables and forms may still convert poorly
  • The built-in API server is explicitly basic and not intended for large-scale production use
  • Overlaps with LangChain, adding decision fatigue
  • LlamaCloud credit costs scale with document complexity
  • Framework surface area has grown large
  • Fast-moving APIs can change between versions
  • Advanced agent features less mature than dedicated agent frameworks

Comparison generated from each tool's listing. Add or remove tools above to change it.