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Memory & Vector DBs

Vector databases and memory layers so agents can store and recall knowledge.

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Pinecone

Fully managed vector database with serverless indexes and integrated embedding and reranking.

Free tierAPI key

Qdrant

Open-source vector search engine written in Rust, available self-hosted or as a managed cloud.

Free tierAPI key

Chroma

Developer-friendly open-source embedding database that runs in-process or as a server.

FreeNo auth

Cloudflare Vectorize

Vector database built into Workers for storing and querying embeddings close to your code.

Free tierAPI key

Weaviate

Open-source vector database with hybrid search and built-in vectorizer modules.

Free tierAPI key

Milvus

Open-source, highly scalable vector database, also offered as the managed Zilliz Cloud.

FreeNo auth

pgvector

Postgres extension that adds vector columns and similarity search to an ordinary database.

FreeNo auth

LanceDB

Embedded, serverless vector database storing data in an open columnar format.

FreeNo auth

Mem0

Memory layer that lets agents remember user facts and preferences across sessions.

Free tierAPI key

Zep

Long-term memory for agents built on a temporal knowledge graph of conversations and data.

Free tierAPI key

Letta

Platform for stateful agents with self-managed memory, descended from the MemGPT research project.

Free tierAPI key

Turbopuffer

Serverless search engine on object storage combining vector and full-text queries at low cost.

PaidAPI key

Redis Vector Search

Vector similarity and hybrid search inside Redis, handy when you already use it for caching.

Free tierAPI key