What is Deep Research?
What does 'Deep Research' mean?
A mode in which an assistant works through a question over multiple steps rather than answering in one pass, searching sources, reading them, following up on gaps, and returning a longer synthesis with citations. Runs take minutes rather than seconds. Output is typically a structured brief or report the user can check against the sources it drew on.
List of software with Deep Research functionality
About the reviewer
Rajat Gupta is the founder of Spotsaas. Over the past two years, he has reviewed 2,000+ tools across CRM, HR, AI, and finance — applying hands-on product research and a background in commerce and the CFA program to evaluate software through a business and ROI lens. His goal: help teams make software decisions they won't regret.
Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].