AI-powered invoice extraction workflow that uses Google Drive, ChatGPT (GPT-4o), and Google Sheets to automate invoice processing. Whether you're a small business owner or a solo entrepreneur, this setup can drastically reduce your bookkeeping time and ensure you're audit-ready at all times. 🌟 n8n Template: 🔍 What You’ll Learn: - How to use Google Drive as a trigger for AI invoice extraction - Smart routing of PDFs vs. image invoices using file type detection - Using OpenAI's API with GPT-4o Mini to parse and extract invoice data - How to structure and store invoice data in Google Sheets automatically - Cost breakdown and optimization tips for AI usage - Real-world examples of processing PDF and image invoices 📁 Built for scalability, this method is ideal for teams and solo founders alike. ⏱️ Chapters 00:00 - Introduction & What You’ll Learn 00:30 - Credit to Motion & Setup Context 01:00 - Overview of the Four-Step Workflow 01:40 - File Type Routing Logic (PDF vs Image) 02:30 - ChatGPT API Model & Token Usage 03:10 - Benefits for Auditing & Documentation 04:00 - Setting Up Google Drive & Folder Structure 04:40 - Drag & Drop PDF Demo 05:30 - File Detection & Data Extraction 06:30 - Viewing Results in Google Sheets 07:20 - Processing an Image Receipt (JPEG Example) 08:10 - Using GPT-4o Mini & Cost Efficiency 09:30 - Detailed Breakdown of Invoice Fields 10:30 - Practical Use Cases for Small Businesses 11:10 - Final Thoughts on ROI & Automation 11:50 - Sneak Peek: Microsoft OneDrive Version Coming Next 📌 Resources & Links: - OpenAI API Pricing: - n8n website: - Original n8n workflow: