app.py

import gradio as gr
from gradio.mix import Parallel

doggie="My first Text generator"
description="input text and submit"

model1=gr.Interface.load("huggingface/gpt2")
model2=gr.Interface.load("huggingface/EleutheAI/gpt-j-6B")
model3=gr.Interface.load("huggingface/EleutheAI/gpt-neo-1.3B")

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