Long-running AI research task that produces a cited multi-page report.
2 min readupdated 2026-07-06
/ quick answer
Deep Research is a class of agentic workflow — offered by ChatGPT, Gemini, Perplexity and Grok — where the model spends 5–30 minutes browsing dozens of sources, cross-checking claims and returning a structured, citation-heavy report instead of a chat answer.
Deep Research is a class of AI feature — pioneered by OpenAI in early 2025 and now shipped by Anthropic, Google Gemini, Perplexity and xAI — where an agent runs a multi-step research task over the open web (and sometimes your own documents) and returns a structured report with citations. Instead of a single search-and-summarise, the agent plans sub-questions, browses dozens or hundreds of pages, cross-checks sources, and often runs for 5–30 minutes. It is the closest AI has come to replacing a junior analyst for well-scoped desk research: competitor scans, market sizing, literature reviews, due-diligence briefs. The output quality depends heavily on how well the prompt frames the question and constraints — deep research tools reward specificity the same way a good analyst brief does.
Definition
Deep Research is a class of agentic workflow — offered by ChatGPT, Gemini, Perplexity and Grok — where the model spends 5–30 minutes browsing dozens of sources, cross-checking claims and returning a structured, citation-heavy report instead of a chat answer.
Example
Prompt: 'Compare pricing, quotas and cold-start latency across the top 6 serverless-GPU providers, sourced from 2025 docs.' The agent returns a 3,000-word report with a comparison table and 40+ links.
OpenAI's o3-based Deep Research and Anthropic's Claude Research are strongest on synthesis and citation quality. Perplexity is fastest and best for shallow-but-broad scans. Gemini is strongest inside the Google ecosystem.
How long does a Deep Research run take?
Typically 5–30 minutes depending on the tool and the scope of the question. Most vendors let you leave the tab and get an email when it is done.
Can I run Deep Research on my own private documents?
Some tools (Claude, Gemini, enterprise ChatGPT) can pull from connected drives or an uploaded corpus. The pattern is often combined with RAG for private-knowledge grounding.
How is Deep Research different from just asking ChatGPT?
A normal chat answer is one round-trip. Deep Research plans sub-questions, browses many sources, cross-checks, and produces a structured multi-section report with inline citations.