Duo Explained is a free browser extension designed for Chrome that enhances the Duolingo learning experience by integrating OpenAI's ChatGPT. This add-on allows users to receive detailed explanations for various exercises on the Duolingo platform, making language learning more effective and interactive. Users can choose to utilize their own OpenAI API Key for full access or opt for a limited free integration, ensuring flexibility in usage.

This extension not only streamlines the learning process but also provides valuable insights into the language exercises, helping users to understand concepts better. With its user-friendly interface, Duo Explained serves as a useful tool for both beginners and advanced learners looking to deepen their understanding of languages through personalized assistance.