LanceDB
Open-source multimodal vector database for search, RAG and agent memory.
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About LanceDB
LanceDB is listed in our memory & RAG category and is aimed at builders. Open-source multimodal vector database for search, RAG and agent memory. Pricing, as the maker states it: Open source + cloud. Maturity: Mature. We last checked the official link on 2026-10-16.
What is LanceDB?
LanceDB is an open-source multimodal vector database for fast, scalable vector search, built on the Lance columnar format. It can store, index and search petabytes of multimodal data and vectors.
It is used for search, RAG and agent memory, and a cloud option is available.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: lancedb.com.
Who is LanceDB for?
Developers storing and searching embeddings and multimodal data for RAG or agents.
LanceDB at a glance
- Open source: Yes (Apache License 2.0)
- GitHub: lancedb/lancedb · 11,721 stars (as of Oct 21, 2026)
Key features
- Multimodal vector search
- Built on the Lance format
- Scales to very large datasets
- Open source plus cloud
LanceDB FAQ
What is LanceDB?
LanceDB is an open-source multimodal vector database for fast, scalable vector search, built on the Lance columnar format. It can store, index and search petabytes of multimodal data and vectors.
Who is LanceDB for?
Developers storing and searching embeddings and multimodal data for RAG or agents.
Is LanceDB free?
LanceDB's pricing, as the maker states it: Open source + cloud. Open-source tools are free to use, though you may still pay for model API usage or a hosted plan. Check the official site for current plans.
Is LanceDB open source?
Yes. LanceDB is released under the Apache License 2.0, according to its GitHub repository.
What are alternatives to LanceDB?
Similar tools include Chroma, Activeloop, seekdb, txtai, llmware and ktx.
LanceDB ratings and reviews
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LanceDB alternatives
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llmware
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