A deep research agent is an AI tool that spends minutes searching and reading many sources on its own, then writes a long, cited report on your question.
In plain words
Instead of replying in seconds, a deep research agent works through several steps: it plans, searches the web, reads what it finds, changes direction when it learns something new, and repeats. At the end it combines everything into a report with citations. Examples include deep research in ChatGPT and Deep Research in Gemini.
A quick example
Imagine asking for a comparison of home heat pumps for a cold climate. Instead of answering at once, the agent browses dozens of sites, pulls out running costs and performance figures, and returns a multi-page report with links, so you can check each claim yourself.
Where you'll meet it
- Market and competitor research.
- Background reading before a big purchase or decision.
Related
Sources
- DocsIntroducing deep research, OpenAI · read 29 Sept 2026
- DocsGemini Deep Research, Google · read 3 Oct 2026
Checked by WhatIsAI against the sources above · 3 Oct 2026. Spotted an error? Report it.