What is deep research in ChatGPT and when should I use it?

Deep research is a ChatGPT feature that works like a research assistant. Instead of answering immediately, it spends several minutes searching many sources, reading them, comparing information and then writing a detailed report with citations.

A normal ChatGPT search does one or a few quick searches to answer a question. Deep research is designed for questions that need a thorough investigation. It plans its approach, runs many searches, follows promising leads, and puts everything together into a structured document. A task that might take a person several hours of reading can be done in roughly five to thirty minutes.

Good uses for deep research include:

1. Market research, such as "the electric scooter market in India: key players, pricing trends and government incentives."
2. Comparing products or services in detail before a big purchase or business decision.
3. Background research for an article, presentation or report.
4. Literature reviews on academic topics.
5. Understanding a new industry, technology or regulation.
6. Competitor analysis for a business.

To start, select deep research from the tools menu or message options, then describe what you need. ChatGPT often asks clarifying questions first, such as what time period, region or depth you want. Answer them carefully, because they shape the whole report.

Tips for better reports:

Be clear about the purpose. "I am deciding whether to open a cloud kitchen in Prayagraj" helps it focus on what matters for your decision.
Specify the scope: region, time period, types of sources and what to exclude.
Ask for a format, such as an executive summary, comparison tables or recommendations.
Mention preferred sources, such as government data, industry reports or academic papers.

Deep research is powerful but not perfect. Reports can include outdated figures, rely on weaker sources or misread data. Check key numbers and claims by opening the cited links, especially if you will use the report for decisions or publish it.

There are usage limits, which are lower on free plans and higher on paid plans, because each deep research task uses a lot of computing power.

For quick questions, normal chat or search is better. Save deep research for questions where you would otherwise spend hours reading, and it can become one of the most valuable features in ChatGPT.