GPT Sheets™ Docs™ is an AI tool that enables users to clean, classify, extract, translate, edit, summarize, and write text directly in Google Sheets™ and Docs™. It uses OpenAI's ChatGPT and GPT-3/GPT-4 models and offers various functions such as generating blog post ideas, cleaning lists, and summarizing reviews. The add-on is free to use but requires an OpenAI API key and subscription for advanced features. It is recommended for anyone looking to streamline their text-related work in Google Workspace.