Upload 2 files

app.py

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+from openai import OpenAI
+import gradio as gr
+import os
+
+API_KEY = os.environ['API_KEY']
+
+# Configure OpenAI client
+client = OpenAI(
+    base_url="https://openrouter.ai/api/v1",
+    api_key="API_KEY",  
+    default_headers={
+        "Authorization": f"Bearer {API_KEY}",
+        "HTTP-Referer": "",  # Optional: Your app's URL
+        "X-Title": ""  # Optional: Your app name
+    }
+)
+
+messages = [
+    {"role": "system", "content": "Text Generation AI Assistant"},
+]
+
+def chatbot(input):
+    if input:
+        messages.append({"role": "user", "content": input})
+        response = client.chat.completions.create(
+            model="openai/gpt-oss-20b:free",
+            messages=messages
+        )
+        reply = response.choices[0].message.content
+        messages.append({"role": "assistant", "content": reply})
+        return reply
+
+# Using modern Gradio interface
+with gr.Interface(
+    fn=chatbot,
+    inputs=gr.Textbox(lines=3, label="Try: What is the value of pi", placeholder="Enter your message here..."),
+    outputs=gr.Textbox(lines=10,label="Response"),
+    title="",
+    description="",
+    theme=gr.themes.Default(primary_hue="sky")
+) as demo:
+    demo.launch()

requirements.txt

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+gradio
+openai