LanceDB vs sqlite-vec
LanceDB: Embedded, serverless retrieval database on the Lance columnar format for multimodal AI data. sqlite-vec: Dependency-free SQLite extension for vector search that runs anywhere SQLite does, including WASM.
key differences
- LanceDB is built for larger datasets (≤ 1 PB) than sqlite-vec (≤ 100 GB).
- Horizontal scaling is native in LanceDB and none in sqlite-vec.
- Transactions: LanceDB offers limited ACID; sqlite-vec offers full.
- Only LanceDB has columnar storage, compression, time travel, online schema changes.
- Only sqlite-vec has transactions, joins, json, triggers, in-memory.
- LanceDB has a serverless option; sqlite-vec does not.
choose lancedb for
- +Embedded RAG in desktop, CLI and agent apps
- +Multimodal datasets shared by training and retrieval
- +Agent memory stores
- +Serverless vector search over S3
best at · Vector search, RAG, Embedded
choose sqlite-vec for
- +On-device RAG in desktop and mobile apps
- +Local-first semantic search
- +Browser-based vector search via WASM
- +Small server apps already on SQLite or libSQL
best at · Vector search, RAG, Embedded
LanceDB vs sqlite-vec: FAQ
What is the difference between LanceDB and sqlite-vec?
LanceDB: Embedded, serverless retrieval database on the Lance columnar format for multimodal AI data. sqlite-vec: Dependency-free SQLite extension for vector search that runs anywhere SQLite does, including WASM. LanceDB is built for larger datasets (≤ 1 PB) than sqlite-vec (≤ 100 GB). Horizontal scaling is native in LanceDB and none in sqlite-vec. Transactions: LanceDB offers limited ACID; sqlite-vec offers full.
When should I choose LanceDB over sqlite-vec?
Choose LanceDB for embedded RAG in desktop, CLI and agent apps; multimodal datasets shared by training and retrieval; and agent memory stores. Choose sqlite-vec for on-device RAG in desktop and mobile apps; local-first semantic search; and browser-based vector search via WASM.
Is LanceDB or sqlite-vec more popular?
sqlite-vec ranks #81 on the WhichDB Score (31.1/100) and LanceDB ranks #102 (27.5/100). Popularity is not fit: check the requirements that matter for your project.
Are LanceDB and sqlite-vec open source?
Yes. LanceDB is open source. License: Apache License 2.0. Yes. sqlite-vec is open source. License: MIT or Apache-2.0 (dual).