ChatGPT plus api need for our website

I am looking for an open source ChatGPT solution that has a graphical user interface. I already have a plan for deploying the solution and am looking for assistance in implementing it.

i need :

Amazon Seller Central api for getting Listing/Asin.
after fetching listing/asin then it show existing keyword of asin and suggested keyword through chatgpt
after fetching listing/asin then it show existing title of asin and suggested title through chatgpt
after fetching listing/asin then it show existing 5 bullet point of asin and suggested 5 bullet point through chatgpt
after fetching listing/asin then it show existing Rank and improve how to rank increase throgh chatgpt

single and bulk option need to do all these. need website with user/admin option. website need subscription based where user can come and subscribe and use it. need it work on shared hosting of namecheap.

Api need CHATGPT Plus version.
we need freelancer who work already with chatgpt or amazon api.

Thanks