diff --git a/integrations/openapi/tests/test_openapi_service.py b/integrations/openapi/tests/test_openapi_service.py
index 352a589369..d08fd1b7df 100644
--- a/integrations/openapi/tests/test_openapi_service.py
+++ b/integrations/openapi/tests/test_openapi_service.py
@@ -363,7 +363,10 @@ def prepare_fc_params(openai_functions_schema: dict[str, Any]) -> dict[str, Any]
 
         pipe = Pipeline()
         pipe.add_component("spec_to_functions", OpenAPIServiceToFunctions())
-        pipe.add_component("functions_llm", OpenAIChatGenerator(model="gpt-4.1-nano"))
+        pipe.add_component(
+            "functions_llm",
+            OpenAIChatGenerator(model="gpt-5.6-luna", generation_kwargs={"reasoning_effort": "none"}),
+        )
 
         pipe.add_component("openapi_container", OpenAPIServiceConnector())
         pipe.add_component(
@@ -375,7 +378,7 @@ def prepare_fc_params(openai_functions_schema: dict[str, Any]) -> dict[str, Any]
             "final_prompt_adapter",
             OutputAdapter("{{system_message + service_response}}", list[ChatMessage], unsafe=True),
         )
-        pipe.add_component("llm", OpenAIChatGenerator(model="gpt-4.1-nano"))
+        pipe.add_component("llm", OpenAIChatGenerator(model="gpt-5.6-luna"))
 
         pipe.connect("spec_to_functions.functions", "prepare_fc_adapter.functions")
         pipe.connect("spec_to_functions.openapi_specs", "openapi_spec_adapter.specs")