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# Arize
[Arize](https://arize.com) is an AI observability and LLM evaluation platform that offers
support for LangChain applications, providing detailed traces of input, embeddings, retrieval,
functions, and output messages.
## Installation and Setup
First, you need to install `arize` python package.
```bash
pip install arize
```
Second, you need to set up your [Arize account](https://app.arize.com/auth/join)
and get your `API_KEY` or `SPACE_KEY`.
## Callback handler
```python
from langchain_community.callbacks import ArizeCallbackHandler
```
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