AI-powered academic search engine by Allen AI
Semantic Scholar is a free academic search engine from the Allen Institute for AI that indexes 220M+ scientific papers. Its AI capabilities include Semantic Reader (AI-enhanced PDF reading), TLDR summaries, paper recommendations, and Research Feeds that surface relevant new work automatically.
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The AI-powered answer engine with citations
Perplexity AI answers complex research questions with cited, real-time web sources and supports multi-step research flows. Pro mode unlocks GPT-4o, Claude, and Grok models, plus image uploads, PDF analysis, and unlimited file attachments. The best research tool for knowledge workers who need current, sourced answers.
AI research assistant for academic literature
Elicit searches academic literature and extracts key findings, methods, sample sizes, and limitations from papers automatically. It finds papers beyond keyword search using semantic understanding, then synthesizes findings across multiple studies. Essential for researchers, grad students, and evidence-based content creators.
AI search engine for scientific research
Consensus searches 200M+ scientific papers and provides AI-synthesized answers with claims supported by specific studies. The Consensus Meter shows how much scientific evidence supports or contradicts a claim. Ideal for evidence-based medicine, policy research, and fact-checking.
Smart citation analysis for research
Scite.ai analyzes how papers cite each other — showing whether citations are supporting, contrasting, or mentioning a claim. Its Assistant uses Smart Citations to answer research questions with referenced scientific evidence. Helps researchers evaluate the credibility and consensus around specific claims.