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Best AI Tools for Vector search and embeddings (47 options)
47 tools for vector search and embeddings in the directory. Databases and libraries for embeddings, similarity search and retrieval.
How to read this page. We do not rank tools or publish scores. This page lists every Vector Databases tool in the directory with its official link and pricing model so you can shortlist, then try the ones that fit. Pricing labels come from each vendor's pricing page when we could confirm them; "See site" means we could not.
At a glance
- 47 tools listed; 9 free to use, 13 with a free tier, 0 paid, 25 where pricing is not confirmed here.
- With a free plan or tier: Algolia, Annoy, Chroma, FAISS, hnswlib, Mixedbread, Neo4j, ParadeDB, pgvector, Ragie, Redis, ScaNN, Supabase, SurrealDB, TigerData, Turso, txtai, Upstash Vector, USearch, Vald, Weaviate, Zilliz.
What to look for
Consider hosted versus self-hosted, the index types offered, filtering features and how pricing scales with data size.
All 47 tools
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Algolia | Search and discovery API with AI-powered neural and vector search. | Freemium | Official site |
| Amazon S3 Vectors | Native vector storage and similarity queries in Amazon S3. | See site | Official site |
| Annoy | Open-source library from Spotify for approximate nearest neighbor search. | Free | Official site |
| Chroma | Open-source search and embeddings database for AI applications. | Freemium | Official site |
| Cloudflare Vectorize | Globally distributed vector database on Cloudflare. | See site | Official site |
| Contextual AI | Enterprise platform for building RAG agents over company documents. | See site | Official site |
| Couchbase | Cloud database with vector search for AI applications. | See site | Official site |
| Deep Lake | Activeloop's database for AI that stores vectors, images and other multimodal data. | See site | Official site |
| Elasticsearch | Search and analytics engine that supports vector and hybrid search. | See site | Official site |
| Epsilla | Platform for building, deploying and managing vertical AI agents for enterprises. | See site | Official site |
| FAISS | Meta's open-source library for efficient similarity search over dense vectors. | Free | Official site |
| HelixDB | Graph and vector database with agent-friendly ontology tools. | See site | Official site |
| hnswlib | Open-source header-only C++/Python library for fast approximate nearest neighbor search. | Free | Official site |
| Infinity | Open-source AI-native database from InfiniFlow for dense, sparse and full-text hybrid search. | See site | Official site |
| KDB.AI | Vector database from KX for time-series and similarity search. | See site | Official site |
| LanceDB | Open-source multimodal vector database built on the Lance format. | See site | Official site |
| Marqo | Vector search platform that handles embedding generation and retrieval. | See site | Official site |
| Meilisearch | Open-source search engine with keyword, vector and hybrid search, available self-hosted or as a managed cloud. | See site | Official site |
| Milvus | Open-source vector database built for scalable similarity search. | See site | Official site |
| Mixedbread | Search platform and embedding and reranking models for building AI search. | Freemium | Official site |
| MongoDB Atlas Vector Search | Vector search built into MongoDB Atlas. | See site | Official site |
| Neo4j | Graph database with vector search, used for knowledge graphs and GraphRAG. | Freemium | Official site |
| OpenSearch | Open-source search and analytics suite with vector search. | See site | Official site |
| Oracle AI Vector Search | Vector search built into Oracle Database. | See site | Official site |
| ParadeDB | Postgres extension and distribution for full-text search and analytics, used alongside vector search. | Free | Official site |
| pgvector | Open-source vector similarity search extension for PostgreSQL. | Free | Official site |
| Pinecone | Managed vector database for search and retrieval applications. | See site | Official site |
| Qdrant | Open-source vector database and search engine with a managed cloud. | See site | Official site |
| Ragie | Managed retrieval-augmented generation (RAG) service with connectors, indexing and retrieval APIs. | Freemium | Official site |
| Redis | In-memory data platform with vector search and semantic caching for AI apps. | Freemium | Official site |
| ScaNN | Google open-source library for efficient vector similarity search. | Free | Official site |
| SingleStore | Distributed SQL database with built-in vector search for real-time AI apps. | See site | Official site |
| Supabase | Open-source Postgres development platform with vector and AI toolkit. | Freemium | Official site |
| SurrealDB | Multi-model database with vector, graph and document data, positioned as memory for AI agents. | Freemium | Official site |
| TigerData | Postgres cloud from the creators of TimescaleDB, with pgvectorscale for vector workloads. | Freemium | Official site |
| turbopuffer | Serverless vector and full-text search engine built on object storage. | See site | Official site |
| Turso | SQLite-compatible database with native vector search for on-device and edge apps. | Freemium | Official site |
| txtai | Open-source embeddings database for semantic search and LLM workflows. | Free | Official site |
| Typesense | Open-source search engine with vector, hybrid and typo-tolerant search. | See site | Official site |
| Upstash Vector | Serverless vector database from Upstash, billed by usage. | Freemium | Official site |
| USearch | Open-source single-file vector search and clustering engine. | Free | Official site |
| Vald | Open-source, cloud-native distributed approximate nearest neighbor vector search engine. | Free | Official site |
| Vectara | Managed platform for retrieval-augmented generation and AI agents grounded in company data. | See site | Official site |
| VectorChord | Postgres extension for scalable vector search. | See site | Official site |
| Vespa | Open-source engine for search, recommendation and vector retrieval at scale. | See site | Official site |
| Weaviate | Open-source vector database with hybrid search and a managed cloud. | Freemium | Official site |
| Zilliz | Managed Milvus vector database cloud from its creators. | Freemium | Official site |