gptpdf is a tool that uses large visual language models (such as GPT-4o) to parse PDF files into Markdown format. It utilizes the PyMuPDF library to identify non-textual areas and leverages the OpenAI API for content parsing, enabling near-perfect rendering of layout, mathematical formulas, tables, images, and charts. With an average cost of $0.013 per page, it offers both efficiency and affordability.