# Use cases/ Experimentation with ChatGPT ChatGPT API Usage using - [Llamaindex](https://gpt-index.readthedocs.io/en/latest/index.html), [OpenAI](https://openai.com), [Guardrails](https://shreyar.github.io/guardrails/), [LangChain](https://python.langchain.com/en/latest/index.html) and more... # # 1. [Unstructured to Structured](./unstructuredToStructured/) ( pdfs invoices to pandas DataFrame) ### Source PDF files e.g. <img src="./unstructuredToStructured/images/pdf.png" alt="source pdf" width="800" height="500"/> ### Target DataFrame e.g. <img src="./unstructuredToStructured/images/table.png" alt="targetdf" width="800" height="500"/> # # 2. [NewsLetters](./newsLetter/) Demo <img src="./newsLetter/images/newsletter.gif" alt="flow" width="950" height="350"/> **Hit ⭐️ if you appreciate it**