We faced many problems while building the product and hosting. When we hosted the project to vercel gpt-3 response time was more than 10 seconds where in hobbie plan of vercel the response need to be completed before 10 seconds or it gets terminated and we need to use a different approach rewrite the module form serverless function to vercel edge function. Prompt engineering was also difficult and we had to give example to gpt for understanding it. The node js pdf extract module did not work on hosting as the extraction was happening in backend and we suffed the internet to find a better npm to replace it!!