Weaviate

The open source AI-native vector database, with hybrid search and vectorization built in.

Weaviate is an open source AI-native vector database: it stores objects and embeddings, and serves hybrid search that combines BM25 and vector similarity in a single query. Built-in vectorizer modules generate embeddings at ingestion time, and multi-tenancy isolates each customer's data. Over GraphQL, REST or gRPC, managed cloud or self-hosted, it's our choice when you want semantic search without building the embedding pipeline yourself.