Best Perplexity Alternatives in 2026

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.

AI research platform. Read, understand, and write academic papers with AI assistance. Explains complex papers in simple language.

Stanford's AI research tool. Generates comprehensive Wikipedia-style articles by researching a topic from multiple perspectives with citations.

AI search engine for scientific research. Ask questions and get evidence-based answers from peer-reviewed studies.

AI search engine with multiple modes. Research mode for deep analysis, code mode for programming, and create mode for content generation.

AI citation analysis tool. See how papers have been cited — whether they support, contradict, or merely mention the claims. Smart Citations.