Neural CovidexNeural Covidex applies state-of-the-art neural network models and artificial intelligence (AI) techniques to answer questions using the COVID-19 Open Research Dataset (CORD-19) provided by the Allen Institute for AI (data release of April 24, 2020), which currently contains over 47,000 scholarly articles, including over 36,000 with full text, about COVID-19 and coronavirus-related research, drawn from a variety of sources including PubMed, a curated list of articles from the WHO, as well as preprints from bioRxiv and medRxiv. In addition, we also support search on 100+ randomized controlled trials (published and ongoing) related to COVID-19 provided by Trialstreamer.