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

Automated AI security testing for agents, chatbots, and APIs. Find prompt injection, data leaks, and unsafe behavior before launch.

Key PromptBrake features:

AI Security Testing Supported Targets CI Release Gates Self-Hosted Execution

Try for free paid Free Trial $499 / Monthly (Enterprise: 30 scans, 1 active runner license) Sponsored

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

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

Welcome to Weaviate.

Key Weaviate features:

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

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

Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.

Key Algolia features:

Speed Ease of Integration Customizable Relevance Scalability

Open Source

Ultra relevant, instant, and typo-tolerant full-text search API.

Key Meilisearch features:

Speed Relevance Ease of Use Open Source

Open Source

AI search engine for apps: semantic text and image search in one API.

Key Vecstore features:

Semantic Text Search Image Search OCR Search Autocomplete

freemium $11 / Monthly (5,000 Credits)

Download Free Icons, Vectors and Logos.

Key SVGmix features:

Free SVG Icons Free SVG Logos Vector Editing App

free

Heroic time series database.

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