Perplexity

Featured

ResearchFreemium

★4.6

AI-powered search engine that provides cited, sourced answers to questions. Combines web search with AI summarization.

Key Features

The GitHub of machine learning. Host, share, and deploy ML models. Massive open-source model hub with inference API.

Google's AI research notebook. Upload documents, PDFs, and websites, then ask questions and get cited answers grounded in your sources.

AI research assistant for academic papers. Find relevant papers, extract key claims, summarize findings, and synthesize across studies.

AI-powered academic search engine by Allen AI. Find relevant research papers with AI-generated summaries and citation analysis.