Best Retrieval-Augmented Generation Tools in 2026
Updated
In short: AnythingLLM is ranked #1 of 26 as of 4 October 2026, ahead of OpenRAG and RAGFlow. The best-ranked option with a free plan is OpenRAG. The lowest first paid tier on this page is RAGFlow at $29/mo.
Retrieval-augmented generation (RAG) tools help developers build workflows that draw on external sources when producing responses. Compare source connectors, hybrid search, reranking and citations to see how entries handle retrieval; deployment choices, maximum file size and a RAG workflow builder can help clarify technical fit. Free plans and paid-from prices add cost context. AnythingLLM, Haystack Enterprise Platform and RAGFlow head the ranking, with Flowise and Dify among the next entries. Consider which sources you need to connect and how you intend to assemble and deploy the workflow, then weigh those needs against the listed capabilities.
26 retrieval-augmented generation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Recognised 40% · Phone app 26% · Documented 20% · Free plan 14% of the score
- 1 AnythingLLM Android only RecognisedPhone appDocumentedFree plan 7.9Free
- 2 OpenRAG No phone app RecognisedPhone appDocumentedFree plan 6.4Free Source citations: YesHybrid search: YesResult reranking: Yes
- 3 RAGFlow No phone app RecognisedPhone appDocumentedFree plan 6.4$29/mo Source citations: YesHybrid search: YesResult reranking: Yes
- 4 Dify No phone app RecognisedPhone appDocumentedFree plan 6.3$49.17/mo
- 5 Haystack Enterprise Platform No phone app RecognisedPhone appDocumentedFree plan 6.3Free Source citations: YesHybrid search: YesResult reranking: Yes
- 6 I3K RAG Enterprise No phone app RecognisedPhone appDocumentedFree plan 6.3Free Source citations: YesHybrid search: YesResult reranking: Yes
- 7 LangChain No phone app RecognisedPhone appDocumentedFree plan 6.3$39/mo Source citations: YesHybrid search: Yes
- 8 Pathway Live Data Framework No phone app RecognisedPhone appDocumentedFree plan 6.3Free
- 9 Ragen No phone app RecognisedPhone appDocumentedFree plan 6.3Free Source citations: YesHybrid search: YesResult reranking: Yes
- 10 Flowise No phone app RecognisedPhone appDocumentedFree plan 6.2$35/mo
- 11 Google Cloud Agent Evaluation No phone app RecognisedPhone appDocumentedFree plan 6.2
- 12 Langflow No phone app RecognisedPhone appDocumentedFree plan 5.7
- 13 Vectara No phone app RecognisedPhone appDocumentedFree plan 5.5$8333.33/mo Source citations: YesHybrid search: YesResult reranking: Yes
- 14 Haystack No phone app RecognisedPhone appDocumentedFree plan 5.4 Source citations: YesHybrid search: YesResult reranking: Yes
- 15 Amazon Bedrock Knowledge Bases No phone app RecognisedPhone appDocumentedFree plan 5.3 Source citations: YesHybrid search: YesResult reranking: Yes
- 16 Amazon Nova ReelAmazon Web Services No phone app RecognisedPhone appDocumentedFree plan 5.3 Source citations: YesHybrid search: YesResult reranking: Yes
- 17 RAGStack No phone app RecognisedPhone appDocumentedFree plan 5.3 Source citations: Yes
- 18 txtai No phone app RecognisedPhone appDocumentedFree plan 5.3 Source citations: YesHybrid search: YesResult reranking: Yes
- 19 Progress Agentic RAG No phone app RecognisedPhone appDocumentedFree plan 5.2$700/mo Source citations: YesHybrid search: Yes
- 20 R2R No phone app RecognisedPhone appDocumentedFree plan 5.2 Source citations: YesHybrid search: Yes
- 21 Graphiti No phone app RecognisedPhone appDocumentedFree plan 5.1 Hybrid search: YesResult reranking: Yes
- 22 Kapa.ai No phone app RecognisedPhone appDocumentedFree plan 5.1 Source citations: YesHybrid search: YesResult reranking: Yes
- 23 LlamaIndex No phone app RecognisedPhone appDocumentedFree plan 5.1
- 24 PrivateGPT No phone app RecognisedPhone appDocumentedFree plan 5.1 Source citations: Yes
- 25 Quivr No phone app RecognisedPhone appDocumentedFree plan 5.0 Source citations: NoResult reranking: Yes
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which retrieval-augmented generation tool is ranked first on Samsung Mobile US Press?
AnythingLLM is ranked #1 of 26 with a score of 7.9. OpenRAG is second and RAGFlow third.
How many of these have a free plan?
10 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, RAGFlow has the lowest first paid tier we found: $29/mo.
How is this list ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.