Best LlamaIndex alternatives.
Live source-backed alternatives to LlamaIndex for RAG tools. Alternatives are selected from the same task category and update whenever the best-of index rebuilds.
LlamaIndex
Official LlamaIndex documentation for RAG, document retrieval, data connectors, agent workflows, chunking, indexing, and knowledge apps. official_service rag retrieval augmented generation document retrieval document pipeline chunking agent framework text document sdk open source cloud data connectors indexing retrieval agents
deepset-ai/haystack
Matched rag, retrieval augmented generation, retrieval-augmented generation; 1 source link; access model: Open source; freshly updated
LangChain
Matched rag, retrieval augmented generation, retrieval-augmented generation; 2 source links; official service signal; access model: Paid API
| # | Alternative | Kind | Access | Fit | Why it appears | Source |
|---|---|---|---|---|---|---|
| 01 | deepset-ai/haystack | repo | Open source | RDR84 | Matched rag, retrieval augmented generation, retrieval-augmented generation; 1 source link; access model: Open source; freshly updated | github.com |
| 02 | LangChain | service | Paid API | RDR82 | Matched rag, retrieval augmented generation, retrieval-augmented generation; 2 source links; official service signal; access model: Paid API | langchain.com |
| 03 | Antfly: A Distributed Search Engine for Multimodal AI Data | article | Pricing not verified | RDR79 | Matched rag, retrieval augmented generation, retrieval-augmented generation; 1 source link; access model: Pricing not verified | github.com |
| 04 | Pinecone | service | Paid API | RDR79 | Matched rag, hybrid search, semantic search; 2 source links; official service signal; access model: Paid API | pinecone.io |
| 05 | Weaviate | service | Paid API | RDR78 | Matched rag, hybrid search, semantic search; 2 source links; official service signal; access model: Paid API | weaviate.io |
| 06 | Supermemory AI Filesystem (SMFS) for Agents | article | Pricing not verified | RDR78 | Matched rag, retrieval augmented generation, retrieval-augmented generation; 1 source link; access model: Pricing not verified | github.com |
| 07 | MaIN.NET NuGet Package Integrates LLMs, RAG, and Agents into .NET | article | Pricing not verified | RDR73 | Matched rag, retrieval augmented generation, retrieval-augmented generation; 1 source link; access model: Pricing not verified | github.com |