<ul data-eligibleForWebStory="true">Perplexity launches Comet, its AI-powered web browser to challenge Google Search.Comet offers AI search engine with summaries, Comet Assistant for automating routine tasks.Users can access Assistant to summarize emails, calendar events, manage tabs, and navigate.Comet enters a competitive market aiming to provide unique capabilities for users.Comet Assistant helpful for simple tasks, but struggles with complex requests, posing challenges.