AnswerThis

AI research assistant for literature review and evidence synthesis.

Searches, summarizes, and extracts structured data across 125M+ academic papers, with sentence-level citations. Goes beyond chat-over-papers with a guided systematic-review workflow covering search, screening, extraction, and report synthesis. A free Basic plan offers unlimited search and summaries; paid tiers add data-extraction volume and the review pipeline.

AI search over 200M+ peer-reviewed papers, with citations.

An academic search engine that runs natural-language questions against a corpus of more than 200 million peer-reviewed papers and synthesizes the findings with inline citations. Its Consensus Meter aggregates how much the studies agree or disagree, and a copilot helps draft literature reviews. Aimed at researchers, students, and clinicians.

AI research assistant: search, read, and review the literature.

AI workspace for academics that searches a corpus of 280M+ papers, runs literature reviews, and answers questions over PDFs with citations. Adds writing aids like a paraphraser and citation generator. Formerly Typeset.io; introduced agentic 'Deep Review' literature search in 2025. Free Basic tier with paid upgrades.

AI research assistant for searching, reading, and writing across scientific papers.

Anara builds a personal library from a researcher's uploaded PDFs and connected sources, then lets you search the literature, ask questions across documents with inline citations, and draft and cite papers. It searches PubMed, arXiv, and JSTOR directly and connects to Zotero, Mendeley, Notion, and cloud drives. A free plan covers core reading and search; paid Plus, Pro, and Max tiers raise limits and add team features.