Perplexity (Research)
Research & Search
Runs dozens of searches on a question and hands back a cited report in minutes.
ChatGPT Deep Research
ChatGPT's research mode, which browses for you and writes up a cited report.
Freemium
Visit website What is it?
Deep research is a mode inside ChatGPT. Give it a question and it plans a search, reads through dozens of websites and PDFs, then writes a long report with links to where each point came from. It takes several minutes, sometimes longer, so you can leave it running and come back.
It usually asks a couple of questions first to pin down what you want, then pulls scattered information into one clear write-up. That suits market scans, buying decisions and getting across a topic you know nothing about.
The reports can run long and sometimes lean on weak sources, so skim the citations on anything important. Perplexity is quicker if you just need a sourced answer, and Gemini's version suits people who live in Google Docs.
Who it's for
ChatGPT users who want a proper write-up on a question and are happy to wait a few minutes for it.
Best for
- Market and industry scans
- Comparing products or suppliers
- Background briefs on a new topic
- Reading lots of sources at once
Why it made the list
It's the research mode most people already have, and its reports are among the most complete around.
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