A chatbot to question pdf files

Hello the community:

I’am new in using the OpenAI’s possibilities.
And I want to make an application or chatbot for questioning a databases of pdf files to extract useful value from them

I want for this to use the openai assistant api instead of using GPT because i want to implement user management and workflow features. And also to keep the files on the local drive.

Which software architecture do you propose to implement this functionality.?

Regards
Ismail

Same question. I’m currently using the open-source project gpt4-pdf-chatbot-langchain to do this with thousands of PDF files. I am wondering whether the Files API could do the same thing for me.