AI Placeholder is a free and AI-driven tool intended to generate false or dummy data for the use of testing and prototyping. The tool leverages the capability of OpenAI API, specifically the GPT-3.5-Turbo model, to create fabricated data. This capacity of creating mock data extends to nearly any form that is needed by the user, as the tool allows the user to specify the type and structure of the desired data. The accessibility of AI Placeholder is facilitated via a hosted version, with the option to also self-host. The tool also supports a specified request format, which allows users to enunciate their specific requirements in terms of content type, quantity, and the nature of the fields involved. This makes AI Placeholder remarkably flexible and tailor-made for prototyping and testing purposes where diverse and copious amounts of data might be needed. Moreover, the data generation spans across various domains, catering to different use-case scenarios. Example applications include creating fabricated data for forum users, CRM sales deal, product listings, and social media posts among others.