diff --git a/demos/samples_python/currency_exchange/hurl_tests/simple.hurl b/demos/samples_python/currency_exchange/hurl_tests/simple.hurl
index 579de34a..cc66863d 100644
--- a/demos/samples_python/currency_exchange/hurl_tests/simple.hurl
+++ b/demos/samples_python/currency_exchange/hurl_tests/simple.hurl
@@ -7,7 +7,8 @@ Content-Type: application/json
       "role": "user",
       "content": "convert 100 eur"
     }
-  ]
+  ],
+  "model": "none"
 }
 HTTP 200
 [Asserts]
diff --git a/demos/samples_python/currency_exchange/hurl_tests/simple_stream.hurl b/demos/samples_python/currency_exchange/hurl_tests/simple_stream.hurl
index 8315236c..4a8bbe4f 100644
--- a/demos/samples_python/currency_exchange/hurl_tests/simple_stream.hurl
+++ b/demos/samples_python/currency_exchange/hurl_tests/simple_stream.hurl
@@ -8,7 +8,8 @@ Content-Type: application/json
       "content": "convert 100 eur"
     }
   ],
-  "stream": true
+  "stream": true,
+  "model": "none"
 }
 HTTP 200
 [Asserts]
diff --git a/demos/use_cases/preference_based_routing/hurl_tests/simple.hurl b/demos/use_cases/preference_based_routing/hurl_tests/simple.hurl
index 51f4ac69..f59c4d5a 100644
--- a/demos/use_cases/preference_based_routing/hurl_tests/simple.hurl
+++ b/demos/use_cases/preference_based_routing/hurl_tests/simple.hurl
@@ -7,7 +7,8 @@ Content-Type: application/json
       "role": "user",
       "content": "I am running under debt, how should I keep a tab on my expenses?"
     }
-  ]
+  ],
+  "model": "none"
 }
 HTTP 200
 [Asserts]
diff --git a/demos/use_cases/preference_based_routing/hurl_tests/simple_stream.hurl b/demos/use_cases/preference_based_routing/hurl_tests/simple_stream.hurl
index 00cc9385..c92a20fc 100644
--- a/demos/use_cases/preference_based_routing/hurl_tests/simple_stream.hurl
+++ b/demos/use_cases/preference_based_routing/hurl_tests/simple_stream.hurl
@@ -8,6 +8,7 @@ Content-Type: application/json
       "content": "I am running under debt, how should I keep a tab on my expenses?"
     }
   ],
+  "model": "none",
   "stream": true
 }
 HTTP 200