AI Vector Databases - Directory w/ AI Reviews

Semantic search and recommendation systems depend on vector representations of text, images, and other data stored in specialized databases. Pinecone and Weaviate are the most widely adopted managed vector databases for production RAG applications. Qdrant and Chroma serve developers who want open-source options with straightforward self-hosting, while LanceDB takes a columnar storage approach optimized for multimodal data and fast similarity search.

Pinecone 1 4.9 New Pinecone Freemium Free Plan API Enterprise 2 reviews Pinecone is one of the most widely adopted managed vector databases, purpose-built for storing and querying high-dimensional embeddings at scale. It provides low-latency similarity search with metadata filtering, serverless scaling, and a simple API, serving as the vector storage backbone for thousa Weaviate 2 4.8 New Weaviate Freemium Free Plan API Open Source Enterprise 2 reviews Weaviate is a leading open-source vector database that stores data objects alongside their vector embeddings for fast similarity search. It supports hybrid search combining vector and keyword-based retrieval, built-in vectorization modules, multi-tenancy, and ACID transactions, making it a full-feat LanceDB 3 4.7 New LanceDB Free Free Plan API Open Source 2 reviews LanceDB is an open-source serverless vector database built on the Lance columnar data format, designed for efficient multimodal AI search. It runs embedded with zero infrastructure overhead, storing data on disk with automatic indexing and supporting text, image, video, and audio embeddings in a uni Milvus 4 4.7 New Milvus Free Free Plan API Open Source 1 review Milvus is an open-source vector database built for scalable AI applications, capable of managing billions of vectors with millisecond search latency. Developed by Zilliz, it supports multiple index types including IVF, HNSW, and DiskANN, with GPU acceleration for high-throughput workloads. Milvus in Qdrant 5 4.7 New Qdrant Freemium Free Plan API Open Source 1 review Qdrant is a high-performance open-source vector database and similarity search engine written in Rust for maximum speed and efficiency. It excels at filtering, payload indexing, and quantization, enabling efficient search across massive vector datasets with complex metadata constraints. Qdrant offer Chroma 6 4.7 New Chroma Free Free Plan API Open Source 2 reviews Chroma is an open-source AI-native embedding database for building LLM apps with memory retrieval in multiple deployment modes.