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app.py

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+import gradio as gr
+from openai import OpenAI
+import os
+import time
+
+def predict(message, history, system_prompt, model, max_tokens, temperature, top_p):
+
+    # Initialize the OpenAI client
+    client = OpenAI(
+        api_key=os.environ.get("API_TOKEN"),
+    )
+
+    # Start with the system prompt
+    messages = [{"role": "system", "content": system_prompt}]
+
+    # Add the conversation history
+    messages.extend(history if history else [])
+
+    # Add the current user message
+    messages.append({"role": "user", "content": message})
+
+    # Record the start time
+    start_time = time.time()
+
+    # Streaming response
+    response = client.chat.completions.create(
+        model=model,
+        messages=messages,
+        max_tokens=max_tokens,
+        temperature=temperature,
+        top_p=top_p,
+        stop=None,
+        stream=True
+    )
+
+    full_message = ""
+    first_chunk_time = None
+    last_yield_time = None
+
+    for chunk in response:
+        if chunk.choices and chunk.choices[0].delta.content:
+            if first_chunk_time is None:
+                first_chunk_time = time.time() - start_time  # Record time for the first chunk
+
+            full_message += chunk.choices[0].delta.content
+            current_time = time.time()
+            chunk_time = current_time - start_time  # calculate the time delay of the chunk
+            print(f"Message received {chunk_time:.2f} seconds after request: {chunk.choices[0].delta.content}")  
+
+            if last_yield_time is None or (current_time - last_yield_time >= 0.25):
+                yield full_message
+                last_yield_time = current_time
+
+    # Ensure to yield any remaining message that didn't meet the time threshold
+    if full_message:
+        total_time = time.time() - start_time
+        # Append timing information to the response message
+        full_message += f" (First Chunk: {first_chunk_time:.2f}s, Total: {total_time:.2f}s)"
+        yield full_message
+
+gr.ChatInterface(
+    fn=predict,
+    type="messages",
+    #save_history=True,
+    #editable=True,
+    additional_inputs=[
+        gr.Textbox("You are a helpful AI assistant.", label="System Prompt"),
+        gr.Dropdown(["gpt-4o", "gpt-4o-mini"], label="Model"),
+        gr.Slider(800, 4000, value=2000, label="Max Token"),
+        gr.Slider(0, 1, value=0.7, label="Temperature"),
+        gr.Slider(0, 1, value=0.95, label="Top P"),
+    ],
+    css="footer{display:none !important}"
+).launch()

requirements.txt

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+gradio
+huggingface
+openai