Haystack vs LlamaIndex
Side-by-side comparison of features, pricing, and ratings
At a glance
| Dimension | Haystack | LlamaIndex |
|---|---|---|
| Pricing | freemium · from Open Source $0/mo | freemium · from Free $0/mo |
| Best for | Engineering teams that need transparent, auditable RAG pipelines running in production., Developers building AI agents with standardized tool calling and control over the agent loop. | Teams automating invoice processing and financial due diligence on messy PDFs, RAG builders whose corpus includes tables, charts, and handwriting |
| Standout features | Agent hooks to control the agent loop (Haystack 3.0) · First-class skills for reusable agent capabilities · Built-in introspection for debugging agents | Agentic OCR with layout-aware parsing · Auto-correction loops that recursively detect and fix parsing errors · Handwritten text parsing with structure extraction |
| Viability score | 87/100 | 83/100 |
| API | Yes | Yes |
Haystack is the stronger pick for engineering teams that need transparent, auditable rag pipelines running in production.; LlamaIndex fits better for teams automating invoice processing and financial due diligence on messy pdfs.
Built from live tool data, last verified 2026-09-28.
Open-source Python framework for building inspectable RAG pipelines and production agents, installable via pip.
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LlamaParse turns messy PDFs, tables, charts and handwriting into clean, LLM-ready structured data for RAG and extraction pipelines.
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Which is better, Haystack or LlamaIndex?
The best choice between Haystack and LlamaIndex depends on your specific use case — we compare them independently on features, current pricing, integrations, and real-world signals (with an on-demand sentiment scan available for each). See the side-by-side breakdown above to match them to your needs.
What are the main differences between Haystack and LlamaIndex?
The key differences include pricing model, feature set, platform support, and skill level requirements. Review the full comparison on RightAIChoice for a detailed breakdown.
Is there a free version of Haystack or LlamaIndex?
Check the pricing section in the comparison for the latest pricing details on both tools, including free tiers, trial options, and paid plans.
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Last reviewed: May 12, 2026