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Qdrant
Vector search via Qdrant — semantic-memory store the model can write to and query.
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Chroma
Local-first vector database via Chroma — embedded, no separate service needed.
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Weaviate
Vector + structured search via Weaviate — multimodal RAG with built-in modules.
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Pinecone
Vector search via Pinecone — managed-cloud RAG store with hybrid search support.
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Redis Search
Redis Stack search + vector + JSON — full RediSearch + RedisJSON surface.