Summarize papers, find sources and reason over documents.
Perplexity AI
An AI-powered answer engine that searches the web in real time and returns synthesized answers with linked source citations, rather than a plain list of results.
Elicit / Ought
A research assistant that searches academic literature, extracts key findings from papers, and summarizes them into structured, comparable tables.
Consensus
A search engine that queries peer-reviewed scientific papers to answer questions directly, surfacing supporting citations from the underlying studies.
A research and note-taking assistant that answers questions and generates summaries grounded strictly in documents and sources you upload.
OpenAI
A general-purpose conversational assistant that can answer questions, draft text, and reason through multi-step problems across many domains.
scite.ai
A research tool that shows how a published paper has been cited elsewhere, classifying each citation as supporting, contrasting or merely mentioning the original claim.
SciSpace
An AI research assistant that helps users read, understand and search scientific literature, including explaining dense passages of a PDF in plain language.