Update app.py

app.py

@@ -248,7 +248,7 @@ Types for vocab: noun, verb, adjective, pronoun, adverb, expression
 Grammar rule IDs should be snake_case."""
 
             response = client.models.generate_content(
-                model="gemini-2.0-flash",
+                model="gemini-2.5-flash",
                 contents=[
                     parse_prompt,
                     types.Part.from_bytes(data=file_bytes, mime_type=mime)