app.py

import gradio as gr
from transformers import GPT2TokenizerFast
import spaces
tokenizer = GPT2TokenizerFast.from_pretrained('Xenova/gpt-4o')
assert tokenizer.encode('hello world') == [24912, 2375]

@spaces.GPU
def tokenize(message, history):
    return str(tokenizer.encode(message))

demo = gr.ChatInterface(tokenize)

if __name__ == "__main__":
    demo.launch()