Free-tier vector databases

Zilliz Cloud Free Tier

Zilliz Cloud Free Tier is a hosted vector database offering from Zilliz, built on the open-source Milvus engine. It provides a managed environment for creating collections, ingesting vectors, and running similarity search through Python, Node.js, or a REST API.

Azure Cosmos DB

Azure Cosmos DB is a fully managed, serverless distributed database for NoSQL and relational workloads. It supports a schema-less JSON document model, automatic indexing, built-in vector search, hybrid search, and SDK access for Python, Node.js, Java, .NET, Go, and other languages.

Pinecone

Pinecone is a fully managed vector database platform built to help teams develop knowledgeable AI applications at production scale. It provides fast similarity search, hybrid retrieval, namespaces for data partitioning, and real-time indexing for dynamic datasets.

Astra DB

IBM DataStax is a data platform offering Astra DB, Hyper-converged Database (HCD), and Langflow for building and operating real-time data applications and generative AI workloads. The page describes A...

Nile

Nile is a PostgreSQL-based database platform for multi-tenant B2B applications. It provides one Postgres database with unlimited virtual tenant databases, tenant isolation, serverless compute, and pgvector support for storing embeddings alongside tenant data.

Qdrant

Qdrant is a vector search engine and vector database for building AI retrieval systems. It supports dense and sparse hybrid search, metadata filtering, multivector retrieval, reranking, and real-time indexing through REST, gRPC, and official clients.

MongoDB

MongoDB is a modern data platform built for developers who need a flexible, scalable database foundation for cloud-native applications. It combines a document database with integrated capabilities for search, vector search, stream processing, analytics, and application services.

Weaviate

Weaviate is a vector database and AI database platform for building search, retrieval-augmented generation, and agentic AI applications. It supports hybrid search, vector search, multi-tenancy, embeddings, ranking, and auto-scaling through Weaviate Cloud or self-managed deployments.

Chroma

Chroma is an open-source search infrastructure product for AI applications. It provides serverless search over vector, full-text, regex, sparse vector, and metadata indexes, with support for object-storage-backed storage and query-aware tiering.

Meilisearch

Meilisearch is a search and retrieval platform that provides full-text search, semantic search, hybrid search, multi-modal search, federated search, vector storage, filtering, faceting, sorting, geose...

CrateDB

CrateDB is a distributed SQL database for live operational data. It supports time-series, JSON, full-text, vector, geospatial, and structured data in one engine, with standard SQL for joins, aggregations, and window functions.