app.py

import gradio as gr
from gradio.mix import Parallel

title="My first Text Generator"
description="Input text and submit."

model1=gr.Interface.load("hugginggace/gpt2")
model1=gr.Interface.load("hugginggace/EleutherAI/gpt-neo-1.3B")
model1=gr.Interface.load("hugginggace/bigscience/bloom-560m")

gr.Parallel(model1,model2,model3, title=title, description=description).launch()