diff --git a/sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_evaluators/_groundedness/_groundedness.py b/sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_evaluators/_groundedness/_groundedness.py
index d8678eab22be..eae5ae042e80 100644
--- a/sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_evaluators/_groundedness/_groundedness.py
+++ b/sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_evaluators/_groundedness/_groundedness.py
@@ -277,6 +277,24 @@ def _validate_context(self, context) -> bool:
 
     @override
     async def _do_eval(self, eval_input: Dict) -> Dict[str, Union[float, str]]:
+        # Import helper functions from base class module
+        from azure.ai.evaluation._evaluators._common._base_prompty_eval import (
+            _is_intermediate_response,
+            _preprocess_messages,
+        )
+
+        if _is_intermediate_response(eval_input.get("response")):
+            return self._not_applicable_result(
+                "Intermediate response. Please provide the agent's final response for evaluation.",
+                self._threshold,
+            )
+
+        # Preprocess messages if they are lists
+        if isinstance(eval_input.get("response"), list):
+            eval_input["response"] = _preprocess_messages(eval_input["response"])
+        if isinstance(eval_input.get("query"), list):
+            eval_input["query"] = _preprocess_messages(eval_input["query"])
+
         if eval_input.get("query", None) is None:
             return await super()._do_eval(eval_input)