BrainyAI is a completely free Chrome browser extension. Users only need to log in once to use various AI websites. Through a convenient sidebar interface, BrainyAI provides AI chat aggregation, AI search, AI reading, and enhanced AI web browsing features. It supports multiple large language models, such as GPT3.5, GPT4, and prioritizes user privacy. All chat history, settings, and login data are securely stored on the user's local device.