Dify is a platform that allows teams to develop and operate AI-native apps quickly and easily. It offers various features such as a storyteller bot, a SQL generator, a code converter, and a text generator. Dify is compatible with ChatGPT plugins and supports GPT-4 models, providing a smooth experience for model access and data annotation. With Dify, users can create AI applications for product development and continuously improve them through visual checking and data annotation.