Automated Invoice Processing with Mistral OCR + GPT-4o-mini

This n8n workflow automates end-to-end invoice management by monitoring Google Drive for new uploads, converting documents to Base64, and leveraging Mistral AI's advanced OCR for precise text extraction from single or multi-page invoices. The extracted text is then processed by OpenAI's GPT-4o-mini, which intelligently structures data into a custom JSON schema including vendor details, line items, totals, dates, and payment terms.

Key benefits include exceptional accuracy on complex documents, zero manual intervention, and seamless integration of cutting-edge AI models, saving hours of tedious data entry. It's ideal for businesses handling high volumes of invoices, accountants, and finance teams seeking to streamline AP/AR processes.

Use cases span e-commerce order fulfillment, vendor payment automation, expense tracking, and compliance reporting. With minimal setup— just API keys for Mistral, OpenAI, and Google Drive— it delivers structured financial data ready for CRM, accounting software, or databases, enhancing efficiency and reducing errors significantly.