Merlin AI is a browser extension that integrates multiple AI models like ChatGPT, Gemini, and Claude into your browsing experience. It allows you to chat with webpages, summarize articles and videos, translate content, and generate social media posts in 128 languages. With features like a side panel for multi-model chat, custom AI chatbots, and on-demand artifacts, Merlin enhances productivity across research, content creation, and data analysis. It works across Chrome, Edge, iOS, Android, Windows, and Mac, making it a versatile.