DeepSearcher: A Local open-source Deep Research

deep researcher.gif In the previous post, “I Built a Deep Research with Open Source—and So Can You!”, we explained some of the principles underlying research agents and constructed a simple prototype that generates detailed reports on a given topic or question. The article and corresponding notebook demonstrated the fundamental concepts of tool use, query decomposition, reasoning, and reflection. The example in our previous post, in contrast to OpenAI’s Deep Research, ran locally, using only open-source models and tools like Milvus and LangChain. (I encourage you to read the above article before continuing.) In the following weeks, there was an explosion of interest in understanding and reproducing OpenAI’s Deep Research. See, for example, Perplexity Deep Research and Hugging Face’s Open DeepResearch. These tools differ in architecture and methodology although sharing an objective: iteratively research a topic or question by surfing the web or internal documents and output a detailed ... Read full article.