diff --git a/litellm/llms/azure/responses/transformation.py b/litellm/llms/azure/responses/transformation.py
index 9cd5de46be96..cf9f970995cc 100644
--- a/litellm/llms/azure/responses/transformation.py
+++ b/litellm/llms/azure/responses/transformation.py
@@ -53,7 +53,7 @@ def _handle_reasoning_item(self, item: Dict[str, Any]) -> Dict[str, Any]:
                 # Ensure required fields are present for ResponseReasoningItem
                 item_data = dict(item)
                 if "id" not in item_data:
-                    item_data["id"] = f"reasoning_{hash(str(item_data))}"
+                    item_data["id"] = f"rs_{hash(str(item_data))}"
                 if "summary" not in item_data:
                     item_data["summary"] = (
                         item_data.get("reasoning_content", "")[:100] + "..."
diff --git a/litellm/llms/openai/responses/transformation.py b/litellm/llms/openai/responses/transformation.py
index 3d0ec243e5ca..ee04d0d2b3cb 100644
--- a/litellm/llms/openai/responses/transformation.py
+++ b/litellm/llms/openai/responses/transformation.py
@@ -124,7 +124,7 @@ def _handle_reasoning_item(self, item: Dict[str, Any]) -> Dict[str, Any]:
                 # Ensure required fields are present for ResponseReasoningItem
                 item_data = dict(item)
                 if "id" not in item_data:
-                    item_data["id"] = f"reasoning_{hash(str(item_data))}"
+                    item_data["id"] = f"rs_{hash(str(item_data))}"
                 if "summary" not in item_data:
                     item_data["summary"] = (
                         item_data.get("reasoning_content", "")[:100] + "..."
diff --git a/litellm/responses/litellm_completion_transformation/streaming_iterator.py b/litellm/responses/litellm_completion_transformation/streaming_iterator.py
index 93abdee778fb..20822b3628ea 100644
--- a/litellm/responses/litellm_completion_transformation/streaming_iterator.py
+++ b/litellm/responses/litellm_completion_transformation/streaming_iterator.py
@@ -134,7 +134,7 @@ def _transform_chat_completion_chunk_to_response_api_chunk(
 
             return ReasoningSummaryTextDeltaEvent(
                 type=ResponsesAPIStreamEvents.REASONING_SUMMARY_TEXT_DELTA,
-                item_id=f"{chunk.id}_reasoning",
+                item_id=f"rs_{hash(str(reasoning_content))}",
                 output_index=0,
                 delta=reasoning_content,
             )
diff --git a/litellm/responses/litellm_completion_transformation/transformation.py b/litellm/responses/litellm_completion_transformation/transformation.py
index a43e02a0f3e6..9324ab0aa0c6 100644
--- a/litellm/responses/litellm_completion_transformation/transformation.py
+++ b/litellm/responses/litellm_completion_transformation/transformation.py
@@ -708,7 +708,7 @@ def _extract_reasoning_output_items(
                     return [
                         GenericResponseOutputItem(
                             type="reasoning",
-                            id=f"{chat_completion_response.id}_reasoning",
+                            id=f"rs_{hash(str(message.reasoning_content))}",
                             status=choice.finish_reason,
                             role="assistant",
                             content=[
diff --git a/tests/test_litellm/responses/litellm_completion_transformation/test_litellm_completion_responses.py b/tests/test_litellm/responses/litellm_completion_transformation/test_litellm_completion_responses.py
index 00fa0851a7bc..9c8da2e60e0c 100644
--- a/tests/test_litellm/responses/litellm_completion_transformation/test_litellm_completion_responses.py
+++ b/tests/test_litellm/responses/litellm_completion_transformation/test_litellm_completion_responses.py
@@ -265,7 +265,7 @@ def test_transform_chat_completion_response_with_reasoning_content(self):
         assert len(reasoning_items) == 1, "Should have exactly one reasoning item"
 
         reasoning_item = reasoning_items[0]
-        assert reasoning_item.id == "test-response-id_reasoning"
+        assert reasoning_item.id.startswith("rs_"), f"Expected ID to start with 'rs_', got: {reasoning_item.id}"
         assert reasoning_item.status == "stop"
         assert reasoning_item.role == "assistant"
         assert len(reasoning_item.content) == 1