This seems like a promising adaptation of #ChatGPT for academic use: #ChatPDF, in which you upload a PDF and then can ask questions about it in a ChatGPT-like interface. https://www.chatpdf.com/
@tao Didn't work well at all for me for the one (long) paper I tried, most likely due to the small context window - around 3 pages of text for GPT3.5. Not useful now, but perhaps better when GPT-4 is more widely available.