> ## Documentation Index
> Fetch the complete documentation index at: https://langchain.idochub.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# VoyageAI

All functionality related to VoyageAI

> [VoyageAI](https://www.voyageai.com/) Voyage AI builds embedding models, customized for your domain and company, for better retrieval quality.

## Installation and Setup

Install the integration package with

<CodeGroup>
  ```bash pip theme={null}
  pip install langchain-voyageai
  ```

  ```bash uv theme={null}
  uv add langchain-voyageai
  ```
</CodeGroup>

Get a VoyageAI API key and set it as an environment variable (`VOYAGE_API_KEY`)

## Text Embedding Model

See a [usage example](/oss/python/integrations/text_embedding/voyageai)

```python theme={null}
from langchain_voyageai import VoyageAIEmbeddings
```

## Reranking

See a [usage example](/oss/python/integrations/document_transformers/voyageai-reranker)

```python theme={null}
from langchain_voyageai import VoyageAIRerank
```