Merlin AI is a brilliantly implemented tool that augments your browser search with intuitive prompts and offers an exceptional YouTube summarization feature, saving you time and enhancing your content consumption. Its browser extension is notably fulsome, adept at choosing the best Large Language Model for your queries, and comes with a commendable mobile app. While the OpenAI API integration is currently extension-exclusive and requires some learning curve, the overall value for money is outstanding, particularly if you're savvy with LLM selection. Merlin AI is not just a tool; it's a smart digital companion that elevates your online experience.