Build an AI App with Streamlit

From script to app

Streamlit makes Python data/AI apps with no frontend code.

import streamlit as st
from openai import OpenAI
client = OpenAI()

st.title("Ask the AI")
q = st.text_input("Your question")
if q:
    r = client.chat.completions.create(
        model="gpt-4o-mini",
        messages=[{"role": "user", "content": q}])
    st.write(r.choices[0].message.content)

Run with streamlit run app.py.

Why it's great for prototypes

Widgets, layout, and state in a few lines; deploy free on Streamlit Community Cloud or Hugging Face Spaces. Perfect for demos before investing in a full web app.