# Confident AI | |
>[Confident AI](https://confident-ai.com) is a creator of the `DeepEval`. | |
> | |
>[DeepEval](https://github.com/confident-ai/deepeval) is a package for unit testing LLMs. | |
> Using `DeepEval`, everyone can build robust language models through faster iterations | |
> using both unit testing and integration testing. `DeepEval provides support for each step in the iteration | |
> from synthetic data creation to testing. | |
## Installation and Setup | |
You need to get the [DeepEval API credentials](https://app.confident-ai.com). | |
You need to install the `DeepEval` Python package: | |
```bash | |
pip install deepeval | |
``` | |
## Callbacks | |
See an [example](/docs/integrations/callbacks/confident). | |
```python | |
from langchain.callbacks.confident_callback import DeepEvalCallbackHandler | |
``` | |