app.py

import os

from openai import OpenAI
import gradio as gr

api_key = os.environ.get('OPENAI_API_KEY')
client = OpenAI(api_key=api_key)

MODELS = [
    'gpt-4o',
    'gpt-4o-mini',
    'gpt-4',
    'gpt-4-turbo',
    'gpt-3.5-turbo',
]


def generate(message, history, model, system_prompt,
    temperature=1.0, top_p=1.0, frequency_penalty=0.0, presence_penalty=0.0):
    
    history_openai_format = [{"role": "system", "content": system_prompt}]
    for user, assistant in history:
        history_openai_format.append({"role": "user", "content": user})
        history_openai_format.append({"role": "assistant", "content": assistant})
    history_openai_format.append({"role": "user", "content": message})

    response = client.chat.completions.create(model=model,
                                              messages=history_openai_format,
                                              temperature=temperature,
                                              top_p=top_p,
                                              frequency_penalty=frequency_penalty,
                                              presence_penalty=presence_penalty,
                                              stream=True)

    partial_message = ""
    for chunk in response:
        if chunk.choices and chunk.choices[0].delta.content is not None:
            partial_message += chunk.choices[0].delta.content
            yield partial_message


chat_interface = gr.ChatInterface(
    title='💬 Private ChatGPT',
    description='Chat with OpenAI models using their official API. OpenAI <a href="https://platform.openai.com/docs/concepts">promises</a> not to train on input or output of API calls.',
    fn=generate,
    analytics_enabled=False,
    chatbot=gr.Chatbot(
        show_label=False,
        show_copy_button=True,
        scale=1),
    additional_inputs=[
        gr.Dropdown(label="Model",
                    choices=MODELS,
                    value=MODELS[0],
                    allow_custom_value=False),
        gr.Textbox(label="System prompt",
                   value="Je bent een slimme, behulpzame assistent van Edwin Rijgersberg"),
        gr.Slider(label="Temperature",
                  minimum=0.,
                  maximum=2.0,
                  step=0.05,
                  value=1.0),
        gr.Slider(label="Top P",
                  minimum=0.,
                  maximum=1.0,
                  step=0.05,
                  value=1.0),
        gr.Slider(label="Frequency penalty",
                  minimum=0.,
                  maximum=1.0,
                  step=0.05,
                  value=0.),
        gr.Slider(label="Presence penalty",
                  minimum=0.,
                  maximum=1.0,
                  step=0.05,
                  value=0.),
    ],
    textbox=gr.Textbox(container=False,
                       show_label=False,
                       label="Message",
                       placeholder="Type een bericht...",
                       scale=7),
    additional_inputs_accordion=gr.Accordion(label="Instellingen", open=False),
    show_progress="full",
    submit_btn="Genereer",
    stop_btn="Stop",
    retry_btn="🔄 Opnieuw",
    undo_btn="↩️ Ongedaan maken",
    clear_btn="🗑️ Wissen",
)
chat_interface.launch(share=True)