This tool applies sematic search and large language models to help with discovery of relevant and related articles, and to extract information from articles like key points, methodology, results, and study type. Because it is based on a LLM, you can query it for information like "what is the main idea of this paper?" You can upload PDFs to the site as well to utilize these features. *This can be problematic when copyrighted materials that are not open access are uploaded.*
Data Sources: Their website says citations are checked against Sematic Scholar and they also search OpenAlex, PubMed, and ClinicalTrials.gov. Since large language models are generally trained from materials from the open web, there are questions about data sources meaning that access to paywalled scholarly articles is be limited to material like abstracts on publisher websites. They say they update their database weekly.
Strengths: Elicit was originally designed for research in health sciences and has expanded on that capacity.
Cost: There is limited free access, subscriptions start at $10 a month.