app.py

import gradio as gr
from gradio.mix import Parallel

title="my First Text Generator"
description="input text."

model11=gr.Interface.load("huggingface/EleutherAI/gpt-j-6B")
model12=gr.Interface.load("huggingface/gpt2")
model13=gr.Interface.load("huggingface/EleutherAI/gpt-neo-125M")

gr.Parallel(model11, model12, model13, title=title, description=description).launch()