Perplexity Deep Research is an advanced research tool that leverages deep search, analysis, and reasoning to generate high-quality research reports in a short amount of time. Its significance lies in drastically saving users' time and effort, allowing them to quickly access professional-level analysis. It is suitable for various fields, such as finance, marketing, and technology, demonstrating broad applicability and high efficiency. The product is currently free for all users. Pro subscribers enjoy unlimited queries, while non-subscribers have a limited number of uses per day.