You.com is an AI search engine with distinct modes designed for different task types: Smart mode for web research with citations, Genius for complex reasoning, Create for image generation, and Code for programming help. Each mode optimizes the AI's behavior and tools for the specific type of work. The Research mode performs multi-step web searches, synthesizes sources, and delivers detailed answers with inline citations - similar to Perplexity but with a more structured multi-mode interface. Custom apps let you create specialized search experiences for specific domains. For power users who want an AI search tool that adapts to different task types rather than taking a one-size-fits-all approach, You.com's modal design gives more control than competitors.