A Coding Guide to Build Advanced Document Intelligence Pipelines with Google LangExtract, OpenAI Models, Structured Extraction, and Interactive Visualization

LangExtract converts unstructured text into structured, machine-readable information.

Install langextract[openai], pandas, and IPython — the code example shows Colab usage.

The workflow requests the OpenAI API key from the user and sets it as an environment variable.

A reusable extraction pipeline processes contracts, meeting notes, product announcements, and operational logs.

LangExtract prompts and annotations identify entities, actions, deadlines, and risks; results can be grounded to source spans and organized into tabular datasets for visualization and analytics.