Best research agents
5 tools we verified on 2026-11-05. Ordered by accessibility (free plan, then open source), not paid placement.
GPT ResearcherGPT Researcher is an open source autonomous AI research agent that produces deep research reports from many sources, with inline citations. #1 on Carnegie Mellon's DeepResearchGym benchmark.
Free plan: Yes · Open source: Yes · Checked 2026-11-05
UndermindUndermind finds the papers others miss, reading full texts and figures, citing every source. Build command of your field with a living library as you research.
Free plan: Yes · Open source: No · Checked 2026-11-05
ConsensusConsensus is an AI academic search engine for peer-reviewed literature—your research OS for finding, organizing, and analyzing science 10x faster.
Free plan: Not stated · Open source: No · Checked 2026-11-05
ElicitElicit helps you synthesize evidence, understand the landscape, design programs and experiments, draft proposals, and weigh tradeoffs. Trusted by over 7 million researchers and 8 of the top 20 pharmaceutical companies
Free plan: Not stated · Open source: No · Checked 2026-11-05
PerplexityPerplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.
Free plan: Not stated · Open source: No · Checked 2026-10-16