# Label Studio


>[Label Studio](https://labelstud.io/guide/get_started) is an open-source data labeling platform that provides LangChain with flexibility when it comes to labeling data for fine-tuning large language models (LLMs). It also enables the preparation of custom training data and the collection and evaluation of responses through human feedback.

## Installation and Setup

See the [Label Studio installation guide](https://labelstud.io/guide/install) for installation options.

We need to install the  `label-studio` and `label-studio-sdk-python` Python packages:

```bash
pip install label-studio label-studio-sdk
```


## Callbacks

See a [usage example](/docs/integrations/callbacks/labelstudio).

```python
from langchain.callbacks import LabelStudioCallbackHandler
```