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Head-to-head · Retrieval-Augmented Generation Tools

Haystack vs RAGFlow

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Haystack #2 in Retrieval-Augmented Generation Tools 9.2/10 Open source ✓ 4 of 4 features Visit Haystack
RAGFlow #4 in Retrieval-Augmented Generation Tools 8.8/10 Free plan Free plan✓ 4 of 4 features Visit RAGFlow

Haystack leads on 0 checks, RAGFlow on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreHaystack · 9.2/10
  • Free planonly RAGFlow

Haystack scores higher on our rubric for retrieval-augmented generation tools: 9.2 against 8.8 out of 10; our editors rank them #2 and #4.

On deployment, RAGFlow gives you Both where Haystack offers Self_hosted.

Haystack is the better fit for developers building flexible RAG pipelines. RAGFlow is the better fit for affordable deep-document RAG.

  • Haystack fits best

    Developers building flexible RAG pipelines

  • RAGFlow fits best

    Affordable deep-document RAG

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Side by side

Feature Haystack 9.2/10 Visit ↗ RAGFlow 8.8/10 Visit ↗
At a glance
Editor score 9.2 8.8
Ranking #2 in Retrieval-Augmented Generation Tools #4 in Retrieval-Augmented Generation Tools
Best for Developers building flexible RAG pipelines Affordable deep-document RAG
Pricing model Free Free plan + paid
Starting price Open source $29/mo
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Self-hosted Cloud, Self-hosted
Support Community, Docs Community, Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Haystack 4/4 · RAGFlow 4/4
Source citations ✓ ✓
Hybrid search ✓ ✓
Result reranking ✓ ✓
RAG workflow builder ✓ ✓
Specs
Source connectors Not checked yet Not checked yet
Deployment Self_hosted Both
Maximum file size Not checked yet Not checked yet
Our review
Pros
  • Composable pipelines support hybrid retrieval, reranking, and cited answers
  • Broad document conversion covers PDFs, DOCX, HTML, JSON, CSV, and images
  • Integrates with major model providers, vector databases, and monitoring tools
  • Hybrid search combines vector search, BM25, and custom scoring.
  • Grounded answers include traceable citations and advanced reranking.
  • Hosted, API, and Docker deployment support flexible implementation.
Cons
  • Self-hosted deployment places infrastructure responsibility on the development team
  • The framework has no metered SaaS pricing model
  • Hosted platform and enterprise support are separate deepset offerings
  • The Free plan does not include an API key.
  • Free storage is limited to 0.1 GB and five apps.
  • Enterprise features require a separate plan with custom terms.
Our verdict

Haystack is an open-source Python framework for developers building RAG systems, AI agents, multimodal applications, semantic search pipelines, and other LLM applications. Its reusable components let teams assemble inspectable workflows…

Read the review →

RAGFlow is an open-source retrieval-augmented generation engine for developers and enterprises building AI assistants and agent applications. It is designed for teams working with complex, multi-format data and supports hosted use, HTTP…

Read the review →
  1. HaystackRetrieval-Augmented Generation Tools 9.2Open source
  2. RAGFlowRetrieval-Augmented Generation Tools 8.8Free plan

Strengths and trade-offs

  • Haystack — where it wins

    • Composable pipelines support hybrid retrieval, reranking, and cited answers
    • Broad document conversion covers PDFs, DOCX, HTML, JSON, CSV, and images
    • Integrates with major model providers, vector databases, and monitoring tools

    Where it doesn't

    • Self-hosted deployment places infrastructure responsibility on the development team
    • The framework has no metered SaaS pricing model
    • Hosted platform and enterprise support are separate deepset offerings

  • RAGFlow — where it wins

    • Hybrid search combines vector search, BM25, and custom scoring.
    • Grounded answers include traceable citations and advanced reranking.
    • Hosted, API, and Docker deployment support flexible implementation.

    Where it doesn't

    • The Free plan does not include an API key.
    • Free storage is limited to 0.1 GB and five apps.
    • Enterprise features require a separate plan with custom terms.

More comparisons

All Retrieval-Augmented generation tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update