GPTKit is an AI text generation detection tool that uses a multi-model approach to identify and classify text as either human- or machine-generated. It utilizes 6 different AI-based content detection techniques with an accuracy level of around 93%, and provides reports on the authenticity and reality of the content analyzed. It is suitable for anyone looking to check their AI-generated content, including teachers, professionals, students, content writers, employees, freelancers and anyone interested in testing their content for AI-generated content.