Monica is an AI-powered copilot in Chrome that helps users to effortlessly process any selected text on any webpage. It can translate, explain, summarize, or provide writing inspiration. To get started with Monica, users can press Cmd+M (or Ctrl+M) on any webpage, or click the Monica icon in the upper right corner of the page. Users can chat with Monica's GPT-3.5 and GPT-4 models by pressing Cmd+M or Ctrl+M, respectively. Additionally, users can choose any text on a website and have Monica translate, explain, or paraphrase it. Additionally, Monica provides a Prompt Library for ideas and has a quick summary generator for YouTube videos.