ExamGPT, developed by Excelas, is an AI-powered marking system for GCSE STEM subjects. Accessible through our school portal, the system offers educators a robust solution with over 90% marking similarity to UK schools. By integrating its core capabilities with advanced language models like ChatGPT, the system generates comprehensive marking data tailored to established educational formats. It is designed to be fully customizable to specific school requirements and can process scanned exam papers directly.