Best Vector Databases in 2026

Vector database built for scalable similarity search Open-source, highly scalable, and blazing fast.

Key Milvus features:

High Performance Scalability Flexible Deployment Community and Support

Open Source free

Free MVP cost calculator: describe your app in 5 clicks and get a realistic 2026 estimate for a freelancer build, a traditional agency and a fixed-price 14-day build by senior professionals, where the client owns the code.

Key SquadPrime features:

Estimate in 5 clicks Three build routes compared No signup 2026 market rates

Visit website free Sponsored

Kx Systems has a high-performance vector database, kdb+, with a built-in programming language, q, that sets the standard for time-series analytics.

Key KX features:

High Performance q Programming Language Time-Series Data Handling Scalability

Relational DB that uses Datalog and focuses on graphs.

Key Cozo Database features:

Powerful Query Language Graph and Relational Data Efficient Data Storage Open Source

Search through billions of items for similar matches to any object, in milliseconds. It’s the next generation of search, an API call away.

Key Pinecone features:

Scalability Ease of Use Real-time Querying Managed Service

Open Source

Qdrant is a high-performance, massive-scale Vector Database for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/ .

Key Qdrant features:

Advanced Filtering On-disc Storage Scalar Quantization Product Quantization

Open Source freemium

Welcome to Weaviate.

Key Weaviate features:

Semantic Search Scalability Graph-Based Integration with AI/ML Models

ZeusDB is a SaaS provider that specializes in providing custom cloud and online database...

Heroic time series database.

Splutter AI | Create AI Chatbot for Websites, SMS, & Apps - Featured Include Low Latency Stack, Hotswappable Models, Hotswappable Databases, Hotswappable Tools, HostedGPT, & More!

Key Splutter AI features:

Extremely Customizable Chatbot Layout Hotswappable Models Extensive Database Management Hotswappable Databases

freemium $39.99 / Monthly (2000 Query Tokens, Up to 3 Chatbots, Up to 5 Databases)

Download Free Icons, Vectors and Logos.

Key SVGmix features:

Free SVG Icons Free SVG Logos Vector Editing App

free

turbopuffer is a vector database built on top of object storage, which means 10x-100x cheaper, usage-based pricing, and massive scalability.

Key turbopuffer features:

Ease of Use Efficiency Customization Integration

Voyage AI provides cutting-edge embedding models and rerankers for search and retrieval.

Key Voyage AI features:

High-quality embeddings Domain-specific models Easy API integration Competitive pricing

Open Source

Build a ChatGPT-like chatbot from your knowledge base.

Key Chatbase features:

Upload PDF and get a chatbot that answers questions on it API Access Embed on website

freemium $10 / Monthly