README.md

Developer-friendly, database for multimodal AI

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LanceDB is an open-source database for vector-search built with persistent storage, which greatly simplifies retrieval, filtering and management of embeddings.

The key features of LanceDB include:

• Production-scale vector search with no servers to manage.

• Store, query and filter vectors, metadata and multi-modal data (text, images, videos, point clouds, and more).

• Support for vector similarity search, full-text search and SQL.

• Native Python and Javascript/Typescript support.

• Zero-copy, automatic versioning, manage versions of your data without needing extra infrastructure.

• GPU support in building vector index(*).

• Ecosystem integrations with LangChain 🦜️🔗, LlamaIndex 🦙, Apache-Arrow, Pandas, Polars, DuckDB and more on the way.

LanceDB's core is written in Rust 🦀 and is built using Lance, an open-source columnar format designed for performant ML workloads.

Quick Start

Javascript

npm install @lancedb/lancedb

import * as lancedb from "@lancedb/lancedb";

const db = await lancedb.connect("data/sample-lancedb");
const table = await db.createTable("vectors", [
	{ id: 1, vector: [0.1, 0.2], item: "foo", price: 10 },
	{ id: 2, vector: [1.1, 1.2], item: "bar", price: 50 },
], {mode: 'overwrite'});


const query = table.vectorSearch([0.1, 0.3]).limit(2);
const results = await query.toArray();

// You can also search for rows by specific criteria without involving a vector search.
const rowsByCriteria = await table.query().where("price >= 10").toArray();

Python

pip install lancedb

import lancedb

uri = "data/sample-lancedb"
db = lancedb.connect(uri)
table = db.create_table("my_table",
                         data=[{"vector": [3.1, 4.1], "item": "foo", "price": 10.0},
                               {"vector": [5.9, 26.5], "item": "bar", "price": 20.0}])
result = table.search([100, 100]).limit(2).to_pandas()

Blogs, Tutorials & Videos

• 📈 2000x better performance with Lance over Parquet
• 🤖 Build a question and answer bot with LanceDB