When uploading PDF files to your Elicit Library, we recommend uploading in batches of 75 or fewer papers to maintain the speed of the uploads. If your PDF files are particularly long or complex, then we would recommend smaller batches. There is no limit to how many PDFs you can store in your library at this time.
Uploading papers to your Library doesn't use any of your monthly usage. Usage is only drawn when you include a paper in a Research Report, a Systematic Review, or Extract Data. See Usage limits in Elicit.