AI Research

Modern AI company provide “Deep Search” and “Deep Research” as a service. For example, ChatGPT offers Thinking and Deep Research. Google’s Gemini has thinking mode and Deep Research tool(by default make use of “Flash Thinking” model). Grok support Expert mode(think hard) and Heavy mode(team of experts). DeepSeek provides DeepThink mode. Kimi offer “Agent” option, which provides various agentic capabilities such as office-pilot, web search, agent swarm and Deep Research etc.. ...

Agentic Search and Deep Research serve two very different masteries: one is about finding, and the other is about synthesizing. But in practice, they are often intertwined. Agentic Search is the “engine” that powers Deep Research, while Deep Research is the “full-service agency” (the complete project from plan to final report). Internally, it uses Large Language Models (LLMs) to interleve reasoning and tool use action, allowing it to “think” about what it needs to find, then “act” by calling tools, and “reflect” on the results to refine its next actions. ...