For academic research, Semantic Scholar is a great option. This AI-powered research service lets you search and read relevant scientific papers from a repository of more than 219 million papers across all scientific fields. It has robust search options, AI-generated definitions and explanations, and tools to annotate papers, set up AI-powered research feeds and get paper recommendations.
Another top contender is Elicit, an AI research assistant that helps you find, summarize and extract data from more than 125 million academic papers. It's geared for empirical subjects like biomedicine and machine learning, for example, to speed up literature reviews and automate systematic reviews and meta-analyses.
Enago Read is another AI-powered research assistant designed to speed up research by discovering, reading and understanding papers. It comes with features like a Reading Space for collaboration, personalized recommendations and a Copilot feature to explain complex terms. The service offers several pricing tiers, including a free basic plan.