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GPT Researcher

Open-source autonomous research agent — plans subtopics, gathers sources, writes a cited report

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open-sourceFree and open source under the MIT licence. The vendor states plainly that there is no SaaS subscription, no API gateway and no rate limit imposed by the project — you self-host the agent and pay only your underlying LLM and search-API providers directly. Per-query cost therefore depends on your choices: the LLM provider (GPT-class, Claude Sonnet, Gemini, DeepSeek or a local model), the retriever (Tavily, Bing, Google CSE, or free options such as DuckDuckGo and SearXNG), and the configured number of subtopics and iterations, with defaults targeting 10 to 30 sources. The project's own indicative ballpark for a single deep-research run on default OpenAI plus Tavily settings is a few cents to a few dollars of provider spend. There is no first-party hosted SaaS; managed VPC deployments, private-corpus retrievers and SLAs are handled by direct arrangement with the maintainer.View full pricing →

Visit GPT Researcher

https://gptr.dev

About GPT Researcher

GPT Researcher is an open-source autonomous research agent that handles the full loop from question to cited report: it plans subtopics, gathers sources from the live web, curates and aggregates what it finds, and organises the result into a structured report with citations attached — from a single function call. It is one of the most widely adopted agents of its kind, with millions of downloads and hundreds of contributors, and it is designed to be embedded inside multi-agent frameworks rather than used only as a standalone app, which is why it shows up as a research component in so many larger systems. The design is deliberately unopinionated about providers: you choose the LLM (OpenAI, Claude, Gemini, DeepSeek or a local model) and you choose the retriever (Tavily, Bing, Google CSE, or free options such as DuckDuckGo and SearXNG), and the number of subtopics and iterations is configurable, with defaults aiming at ten to thirty sources per run. Because of that, the privacy story is genuinely under your control: self-host with a local model and SearXNG and nothing leaves the machine. Distribution is a Python package on PyPI plus an official gptr-mcp Model Context Protocol server, so it plugs into MCP-aware clients directly. Typical use spans company briefs, market and people analysis, trend spotting, talent research, medical literature and stock analysis.

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Key Features

Autonomous planning, source gathering, curation and report writing
Citations attached to the aggregated results
Provider-agnostic — any supported LLM and any supported retriever
Official gptr-mcp Model Context Protocol server
Python package on PyPI, embeddable in multi-agent frameworks
Fully self-hostable, including local model plus SearXNG for on-prem runs

GPT Researcher Pros & Cons

Pros

  • +MIT licence with no gateway or rate limit means genuinely no vendor lock-in
  • +Local model plus SearXNG keeps sensitive research entirely on-premises
  • +An official MCP server makes it a drop-in research tool for MCP clients

⚠️ Cons

  • You operate it — there is no managed hosting to fall back on
  • Provider spend is yours to monitor and can surprise on long runs
  • Quality depends heavily on which retriever and model you wire up

Tags

deep-researchopen-sourcemcpself-hostedcitationspython
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