ChatGPT is a chatbot app built by OpenAI that can process text, image, and audio inputs, allowing it to perform various tasks such as answering questions, generating text, brainstorming ideas, analyzing images, creating charts and graphs, translating natural language, and more. To use ChatGPT, users create an OpenAI account, choose an AI model, enter a prompt, and interact with the chatbot's responses. Users can edit prompts, copy responses, regenerate responses, dislike responses, share conversations, and more. ChatGPT also offers a desktop app for voice mode and allows users to build custom chatbots using GPTs or Assistants API. The app has various safeguards to prevent inappropriate content and has features such as temporary chats, data controls, and automation through Zapier integrations. Users can manage their data, including deleting and archiving conversations, and use ChatGPT for email copy generation, automating workflows, and more. While some features are available for free, paid subscriptions offer additional capabilities.