Update pipeline/disagreement_detection.py

pipeline/disagreement_detection.py

@@ -81,7 +81,7 @@ async def compare_review_pair(
     """
     
     model = genai.GenerativeModel(
-        model_name="gemini-2.0-flash",
+        model_name="gemini-2.5-flash-lite",
         generation_config={
             "response_mime_type": "application/json",
         }