All of the files for the ChatBot have been replaced with text files Performance should improve. It seems to find the URLs more readily.
It turned out several of the papers were not machine readable. The vendor told me that in some cases the internal files in the bot were filled with question marks and periods instead of text. That indicates the document format was set incorrectly, or it was way out of date. All of those files have been fixed.
I tested a number of files in English, Japanese and Chinese. It seems to find documents that it could not find before. In one case, I asked in English about a detail that is in only one paper by Zhang, in Chinese. It answered with the correct information translated into English. That is remarkable performance.
ChatGPT3 or 4? Anyway my experience are that one get's a head start and one need to know what one are doing. This is currently making the good programmers more productive but likely the bad one not so. Also you may not get the best algorithm for the task so it is worthwhile to discuss the task a little.