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HelixDB

OLTP graph-vector database in Rust on object storage — one engine for graph, vector, and document workloads in AI applications.

★ 5,715 GitHub Apache-2.0 graph-databasevector-databaseragrustobject-storageoltpai RAG & Knowledge

Overview

HelixDB is an open-source OLTP graph-vector database built in Rust that runs directly on object storage. It unifies graph, vector, and document data models in a single engine, making it a strong fit for RAG pipelines, AI agents, and knowledge-graph applications. With over 5,700 GitHub stars and an Apache-2.0 license, HelixDB delivers ACID transactions, SQL-like queries, and native vector similarity search without a separate vector index.

Requirements

Min vCPU
2
Min RAM
4096 MB
Min Disk
10 GB
Rec vCPU
4
Rec RAM
8192 MB
Rec Disk
20 GB

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Guides & articles

HelixDB Tutorial: Building a Hybrid RAG Pipeline with Graph + Vector Search

Step-by-step tutorial: run HelixDB on object storage, define graph + vector schema, and query hybrid RAG in one statement.

Aug 9, 2026

HelixDB Guide: The Rust Graph-Vector Database for AI Applications

HelixDB is an OLTP graph-vector database in Rust that runs on object storage. Learn how it unifies graph, vector, and document workloads for RAG and AI agents.

Aug 9, 2026