Match the depth to the stakes. Quick answer: the model answers, maybe with one web search, taking seconds โ good for low stakes, curiosity, or definitions. Guided research: you direct multiple searches, ask for sources, and compare, taking 5โ15 minutes โ good for medium stakes like pricing or vendor shortlists. Deep Research: the AI autonomously plans, searches dozens of sources, reads, synthesizes, and writes a cited report, taking 5โ30 minutes of AI time โ for high stakes like market entry, competitor analysis, or major purchases.
Both ChatGPT and Claude have a Deep Research mode: you submit a brief, the AI often asks clarifying questions, then goes away and returns with a long, structured, source-linked report.