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*   [Vector stores](/v0.2/docs/integrations/vectorstores)
*   Pinecone

On this page

Pinecone
========

You can use [Pinecone](https://www.pinecone.io/) vectorstores with LangChain. To get started, install the integration package and the official Pinecone SDK with:

tip

See [this section for general instructions on installing integration packages](/v0.2/docs/how_to/installation#installing-integration-packages).

*   npm
*   Yarn
*   pnpm

    npm install -S @langchain/pinecone @pinecone-database/pinecone

    yarn add @langchain/pinecone @pinecone-database/pinecone

    pnpm add @langchain/pinecone @pinecone-database/pinecone

The below examples use OpenAI embeddings, but you can swap in whichever provider you'd like. Keep in mind different embeddings models may have a different number of dimensions:

*   npm
*   Yarn
*   pnpm

    npm install -S @langchain/openai

    yarn add @langchain/openai

    pnpm add @langchain/openai

Index docs[​](#index-docs "Direct link to Index docs")
------------------------------------------------------

    /* eslint-disable @typescript-eslint/no-non-null-assertion */import { Pinecone } from "@pinecone-database/pinecone";import { Document } from "@langchain/core/documents";import { OpenAIEmbeddings } from "@langchain/openai";import { PineconeStore } from "@langchain/pinecone";// Instantiate a new Pinecone client, which will automatically read the// env vars: PINECONE_API_KEY and PINECONE_ENVIRONMENT which come from// the Pinecone dashboard at https://app.pinecone.ioconst pinecone = new Pinecone();const pineconeIndex = pinecone.Index(process.env.PINECONE_INDEX!);const docs = [  new Document({    metadata: { foo: "bar" },    pageContent: "pinecone is a vector db",  }),  new Document({    metadata: { foo: "bar" },    pageContent: "the quick brown fox jumped over the lazy dog",  }),  new Document({    metadata: { baz: "qux" },    pageContent: "lorem ipsum dolor sit amet",  }),  new Document({    metadata: { baz: "qux" },    pageContent: "pinecones are the woody fruiting body and of a pine tree",  }),];await PineconeStore.fromDocuments(docs, new OpenAIEmbeddings(), {  pineconeIndex,  maxConcurrency: 5, // Maximum number of batch requests to allow at once. Each batch is 1000 vectors.});

#### API Reference:

*   [Document](https://v02.api.js.langchain.com/classes/langchain_core_documents.Document.html) from `@langchain/core/documents`
*   [OpenAIEmbeddings](https://v02.api.js.langchain.com/classes/langchain_openai.OpenAIEmbeddings.html) from `@langchain/openai`
*   [PineconeStore](https://v02.api.js.langchain.com/classes/langchain_pinecone.PineconeStore.html) from `@langchain/pinecone`

Query docs[​](#query-docs "Direct link to Query docs")
------------------------------------------------------

    /* eslint-disable @typescript-eslint/no-non-null-assertion */import { Pinecone } from "@pinecone-database/pinecone";import { OpenAIEmbeddings } from "@langchain/openai";import { PineconeStore } from "@langchain/pinecone";// Instantiate a new Pinecone client, which will automatically read the// env vars: PINECONE_API_KEY and PINECONE_ENVIRONMENT which come from// the Pinecone dashboard at https://app.pinecone.ioconst pinecone = new Pinecone();const pineconeIndex = pinecone.Index(process.env.PINECONE_INDEX!);const vectorStore = await PineconeStore.fromExistingIndex(  new OpenAIEmbeddings(),  { pineconeIndex });/* Search the vector DB independently with metadata filters */const results = await vectorStore.similaritySearch("pinecone", 1, {  foo: "bar",});console.log(results);/*  [    Document {      pageContent: 'pinecone is a vector db',      metadata: { foo: 'bar' }    }  ]*/

#### API Reference:

*   [OpenAIEmbeddings](https://v02.api.js.langchain.com/classes/langchain_openai.OpenAIEmbeddings.html) from `@langchain/openai`
*   [PineconeStore](https://v02.api.js.langchain.com/classes/langchain_pinecone.PineconeStore.html) from `@langchain/pinecone`

Delete docs[​](#delete-docs "Direct link to Delete docs")
---------------------------------------------------------

    /* eslint-disable @typescript-eslint/no-non-null-assertion */import { Pinecone } from "@pinecone-database/pinecone";import { Document } from "@langchain/core/documents";import { OpenAIEmbeddings } from "@langchain/openai";import { PineconeStore } from "@langchain/pinecone";// Instantiate a new Pinecone client, which will automatically read the// env vars: PINECONE_API_KEY and PINECONE_ENVIRONMENT which come from// the Pinecone dashboard at https://app.pinecone.ioconst pinecone = new Pinecone();const pineconeIndex = pinecone.Index(process.env.PINECONE_INDEX!);const embeddings = new OpenAIEmbeddings();const pineconeStore = new PineconeStore(embeddings, { pineconeIndex });const docs = [  new Document({    metadata: { foo: "bar" },    pageContent: "pinecone is a vector db",  }),  new Document({    metadata: { foo: "bar" },    pageContent: "the quick brown fox jumped over the lazy dog",  }),  new Document({    metadata: { baz: "qux" },    pageContent: "lorem ipsum dolor sit amet",  }),  new Document({    metadata: { baz: "qux" },    pageContent: "pinecones are the woody fruiting body and of a pine tree",  }),];const pageContent = "some arbitrary content";// Also takes an additional {ids: []} parameter for upsertionconst ids = await pineconeStore.addDocuments(docs);const results = await pineconeStore.similaritySearch(pageContent, 2, {  foo: "bar",});console.log(results);/*[  Document {    pageContent: 'pinecone is a vector db',    metadata: { foo: 'bar' },  },  Document {    pageContent: "the quick brown fox jumped over the lazy dog",    metadata: { foo: "bar" },  }]*/await pineconeStore.delete({  ids: [ids[0], ids[1]],});const results2 = await pineconeStore.similaritySearch(pageContent, 2, {  foo: "bar",});console.log(results2);/*  []*/

#### API Reference:

*   [Document](https://v02.api.js.langchain.com/classes/langchain_core_documents.Document.html) from `@langchain/core/documents`
*   [OpenAIEmbeddings](https://v02.api.js.langchain.com/classes/langchain_openai.OpenAIEmbeddings.html) from `@langchain/openai`
*   [PineconeStore](https://v02.api.js.langchain.com/classes/langchain_pinecone.PineconeStore.html) from `@langchain/pinecone`

Maximal marginal relevance search[​](#maximal-marginal-relevance-search "Direct link to Maximal marginal relevance search")
---------------------------------------------------------------------------------------------------------------------------

Pinecone supports maximal marginal relevance search, which takes a combination of documents that are most similar to the inputs, then reranks and optimizes for diversity.

    /* eslint-disable @typescript-eslint/no-non-null-assertion */import { Pinecone } from "@pinecone-database/pinecone";import { OpenAIEmbeddings } from "@langchain/openai";import { PineconeStore } from "@langchain/pinecone";// Instantiate a new Pinecone client, which will automatically read the// env vars: PINECONE_API_KEY and PINECONE_ENVIRONMENT which come from// the Pinecone dashboard at https://app.pinecone.ioconst pinecone = new Pinecone();const pineconeIndex = pinecone.Index(process.env.PINECONE_INDEX!);const vectorStore = await PineconeStore.fromExistingIndex(  new OpenAIEmbeddings(),  { pineconeIndex });/* Search the vector DB independently with meta filters */const results = await vectorStore.maxMarginalRelevanceSearch("pinecone", {  k: 5,  fetchK: 20, // Default value for the number of initial documents to fetch for reranking.  // You can pass a filter as well  // filter: {},});console.log(results);

#### API Reference:

*   [OpenAIEmbeddings](https://v02.api.js.langchain.com/classes/langchain_openai.OpenAIEmbeddings.html) from `@langchain/openai`
*   [PineconeStore](https://v02.api.js.langchain.com/classes/langchain_pinecone.PineconeStore.html) from `@langchain/pinecone`

* * *

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