Confused about the difference (if any) between Deep Research, Deep Research, and Deep Research? That is, the difference between OpenAI’s, Google’s, Perplexity’s, and the many other products all calling themselves “Deep Research”?
It seems Deep Research is the Retrieval-Augmented Generation (RAG) of 2025—everything is being rebranded and marketed as “Deep Research” without a clear definition of what it actually entails. Does this sound familiar? It echoes the hype around RAG in 2023, agents, and agentic RAG in months past.
Read Han Lee’s explainer for an in-depth comparison.
