GPT Researcher is a free, open-source autonomous research agent that conducts deep web and local-document research on any given topic. It generates comprehensive, multi-thousand-word reports with citations by orchestrating multiple sub-agents across search engines and LLM providers. Benchmarked by Carnegie Mellon's DeepResearchGym, it outperformed Perplexity and OpenAI on citation quality and information coverage. Typical research costs roughly $0.005 using the user's own API keys. Key features: - Deep recursive research with tree-like exploration of subtopics - Multi-LLM support: OpenAI, Anthropic, Groq, Llama 3, and HuggingFace models - Multiple search backends: Google, Bing, Tavily, DuckDuckGo - Hybrid local and web research from uploaded documents - Report export to PDF, Word, Markdown, JSON, and CSV - Breaks LLM token limits to produce 2,000+ word reports
Free and open-source; user pays own LLM/search API costs (~$0.005 per research task)