Perplexity's Deep Search feature breaks an initial prompt into multiple distinct queries to map out a thorough research strategy, reading through hundreds of sources, executing code to analyze data, and reasoning through findings in real time. If a query is too broad, it may ask clarifying questions to narrow the scope. Over a few minutes, it synthesizes cross-referenced information, filters out irrelevant data, and compiles a structured report with inline citations. To use Deep Search, open a web browser or application, go to the Perplexity homepage, and log into your account, as it often requires a subscription. Find the main search box, type a detailed, complex research question, then locate the button or menu labeled Deep Research, Pro Search, or Research to activate the mode. Click the submit arrow or press enter to start the query. Answer any clarifying questions that appear immediately after submitting. Once generated, review the finalized, structured report with citations, and alter the report if unsatisfied.