> ## Documentation Index > Fetch the complete documentation index at: https://docs.consensus.app/llms.txt > Use this file to discover all available pages before exploring further. # Go deeper with Deep Review > A Deep Review runs many searches, reads 50 to 100 papers, and writes a longer report. Use it when one search isn't enough to answer your question. A normal search (**Pro**) reads up to 20 papers and gives you a focused answer in seconds. A **Deep Review** does what a researcher would do over an afternoon: it runs up to 20 searches at once, follows citations, and reads 50 to 100 papers before writing a longer report. ## When to use it | Use Pro when… | Use Deep when… | | - | - | | You have a specific question | Your question is broad or has several parts | | You want a quick answer | You want an overview of a whole topic | | You're exploring | You're checking an idea or looking for gaps | A good rule: start with Pro. If the answer feels thin, or you find yourself asking five follow-ups, switch to Deep. ## Run one Click **Deep** in the search bar before you send your question. It turns blue when it's on. You can also click it on an answer you already have to upgrade it. The Consensus search bar with the Deep toggle switched on and highlighted Deep does best with questions that need many papers to answer well. ```text theme={null} What does the research say about treatments for endometriosis pain? Compare hormonal, surgical, and non-drug approaches, and note where the evidence is weak or conflicting. ``` Deep takes a few minutes. You can watch its plan in the side panel, or leave and come back. Consensus emails you when it's done. The report is longer than a Pro answer and includes visuals such as a summary of where the evidence leans, key claims and their evidence, and research gaps. Every sentence is cited. Deep Reviews are limited by plan: 3 per month on Free, 15 on Pro, and 200 on Deep. Save them for your big questions. ## Try it on your topic Run one Deep Review on the broadest version of your topic. Skim the report for the main themes and any gaps it mentions. **You should now have:** a Deep Review report on your topic that you can come back to as you work through the rest of this guide. See [Deep Review](/core-features/deep-search) for what happens at each step, example prompts, exporting the report, and running a Deep Review over your own papers. This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.