How to Extract and Generate JSON Data With GPTs, LangChain, and Node.js

In this article I will explain how to use LangChain, an AI-driven application framework, along with GPTs and Node.js, to extract and generate structured JSON data. The tutorial covers installing and setting up LangChain, creating prompt templates, generating data using the OpenAI model, error handling, and extracting data from PDF files. I provide step-by-step instructions, code snippets, and examples to demonstrate the process. The tutorial showcases how this approach can be used to create powerful applications for working with structured …

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