Google announced Deep Research on December 11, 2024 as a feature of Gemini Advanced, built on Gemini 1.5 Pro. It was one of the first mainstream “research agent” products: instead of returning a single answer, Deep Research takes a question, drafts a multi-step research plan for the user to review or revise, and then - once approved - works through that plan on its own, browsing the web much as a person would.
The loop is iterative. Gemini searches, finds something useful, and launches new searches based on what it just learned, repeating the cycle many times before synthesizing everything into a structured report with citations back to the original sources, which the user can export to Google Docs. Google’s framing was that it delivers “hours of research at your fingertips in just minutes,” trading instant replies for a slower, more thorough pass over many sources.
Deep Research mattered because it productized the agentic research pattern - plan, browse, gather, synthesize - inside a consumer assistant, ahead of OpenAI’s similarly named Deep Research the following February. It marked a shift in how chatbots were positioned: not just as answer engines but as agents that could be dispatched to do a chunk of knowledge work and report back.