Weaviate

Weaviate delivers high-speed similarity search over raw vectors or data objects. Its hybrid search allows users to combine keyword-based search with vector search, and its generative search enabled them to combine generative models with their data. A handful of companies are beginning to deliver vector search, but Weaviate’s open-source-first attitude and pay-as-you-grow offerings are what makes it stand out.

Previously known as SeMi Technologies, Weaviate has seen significant interest and investment. The company has said that funds received will help it work towards making Weaviate the standard in open-source vector search, allowing it to expand its teams, user community, and list of partners, as well as refining its ML models and modules.