The Vectara platform is an API-based managed platform for building LLM-powered search applications, providing state-of-the-art relevance for search results. It offers a substantial improvement over traditional keyword-based searches by considering the "meaning" of search queries. Applications of LLM-powered search include semantic search, question answering, conversational AI chatbots, product reviews, eCommerce, and others. The Vectara Search UI sample application demonstrates how to build a modern search user interface that utilizes the Vectara Search API while delivering fast results and displaying them for the user. The application is built using NodeJS and React, with a Docker container that can be run locally or on any cloud platform. The configuration file controls various aspects of the Search UI, including corpus ID, customer ID, authentication API key, search title pre, inner, post, and suggested queries. The Vectara Search UI has an Apache 2.0 license and is meant to provide an example of a modern search UI using Vectara to power the search.