Update app.py

app.py

@@ -86,10 +86,10 @@ class OpenAIModelWrapper:
         self.client = client
 
     def __call__(self, prompt: str, **kwargs) -> str:
-        # ignore kwargs like stop_sequences, temperature, etc.
+        # kwargs catches stop_sequences, temperature, etc.
         resp = self.client.responses.create(
             model=self.model_id,
-            input=prompt
+            input_text=prompt       # <-- use input_text here
         )
         return resp.output_text