AI-Ready Engineer Day 9 π― Build a GPT + RAG Web App with Streamlit β No Coding Headaches
β Todayβs milestone is a big one! We've successfully deployed a working GPT + RAG CSV Analyzer Web App

This app lets you:
β’ Upload a CSV file (up to 200MB)
β’ Ask questions in plain English like βWhat is the total revenue in Q1?β
β’ Get instant AI-powered answers grounded in your uploaded data
π§ Powered by:
β’ **OpenAI GPT** for natural language responses
β’ **LlamaIndex** for RAG (Retrieval Augmented Generation)
β’ **Streamlit Cloud** for easy deployment
π Try It Live (No Installation Required)
Just go to π https://www.instrovate.com/gpt-csv
Fill in your name + email, pass the captcha, and launch the demo.
πΈ Here's a quick preview of what it looks like:





π How We Built It (For Curious Minds)
We started from a basic Streamlit + Google Colab prototype in Day 7 & Day 8 of our AI Engineering Series.
Now, itβs live on the web β no Python setup, no ngrok, no Colab. - π https://www.instrovate.com/gpt-csv - You just need to go to the link here , upload your csv file and ask your questions in the natural language.
Under the hood:
β’ Code hosted on GitHub
β’ OpenAI API Key stored securely using Streamlit Secrets
β’ Streamlit Cloud deploys and hosts the app at https://rag-csv-app.streamlit.app
β’ The app is embedded on our website
π Want to Build Your Own GPT App?
If you want to build something like this, go check out my paid **Day 7 & Day 8** posts on Substack β they explain:
β’ How to build the RAG CSV app from scratch
β’ How to use Colab, Streamlit, and LlamaIndex
β’ How to deploy and secure it with secrets and tokens
π Or just message me or drop me an email at support@instrovate.com if you want a custom GPT app built for your data!
π Subscribe to follow the full series: https://instrovate.substack.com
Originally published on Substack



