Label Studio 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.

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Installation and Setup

See the Label Studio installation guide for installation options. We need to install the label-studio and label-studio-sdk-python Python packages: 
pip install label-studio label-studio-sdk

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Callbacks

See a usage example. 
from langchain.callbacks import LabelStudioCallbackHandler