Best Vector Databases for AI Apps
Anything that answers questions over your own documents needs a vector store. The real choice is whether you want a managed service that simply works or an open-source engine you can run next to your app and pay nothing for.
- 1PineconeFreemium
The managed default — no infrastructure to think about, and the one most RAG tutorials assume.
The original managed vector database for AI search.
- 2QdrantFreemium
Fast, Rust-based, and pleasant to self-host; strong filtering alongside vector search.
Open-source vector search engine and database.
- 3WeaviateFreemium
Generates embeddings for you via built-in modules, which removes a whole step from the pipeline.
Open-source vector database with built-in vectorization.
- 4ChromaFree
The simplest way to start — runs in-process while you prototype, before you need a server at all.
Open-source embedding database for AI apps.
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