AI2 Paperfinder
paperfinder.allen.ai
AI research search agent from the Allen Institute for AI, searching over 100 million abstracts with a transparent, step-by-step query process.
Why it is useful
Rather than a black-box answer, Paperfinder shows its work — how it broke down your query, which citation paths it followed, and why it ranked results the way it did — so you can actually trust or challenge the results.