Perplexity (Research)
Research & Search
Runs dozens of searches on a question and hands back a cited report.
Gemini Deep Research
Google's agent that browses for minutes and writes a long, sourced report.
Freemium
Visit website What is it?
Deep Research is a mode inside Google's Gemini assistant. You give it a question, it shows you a research plan you can edit, then it spends several minutes reading dozens or hundreds of pages and writes a structured, multi-page report with sources.
It's a good fit for anything that would normally be a consultant's slide deck: an industry overview, a comparison of suppliers, a summary of what's changed in a market this year. The reports export straight into Google Docs.
Reports can be long-winded and occasionally repeat themselves. Perplexity is faster for shorter questions; this is for when you want the full write-up.
Who it's for
Anyone who needs a thorough written briefing on a topic and would rather edit than research.
Best for
- Industry and market reports
- Supplier or vendor comparisons
- Briefings for a meeting
- Long-form background research
Why it made the list
The most thorough of the deep research agents, backed by Google's own search index.
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