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LangChain · Class

InMemoryVectorStore

InMemoryVectorStore is an in-process vector store in langchain-core. It stores embeddings in memory and finds documents by cosine similarity.

Last updated

Since
v1.7

Syntax

InMemoryVectorStore(embedding: Embeddings)

In-depth API docs are only for subscribers: parameters, examples, common mistakes and interview practice.

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  • VectorStore
  • Embeddings
  • Document
  • similarity_search
  • similarity_search_with_score
  • similarity_search_with_relevance_scores
  • aadd_documents
  • asimilarity_search_with_score

Source: InMemoryVectorStore | langchain_core. Checked 2026-11-03.