diff --git a/litellm/types/llms/oci.py b/litellm/types/llms/oci.py
index 52c1b2943f..75d13192c5 100644
--- a/litellm/types/llms/oci.py
+++ b/litellm/types/llms/oci.py
@@ -121,7 +121,7 @@ class OCICompletionTokenDetails(BaseModel):
     reasoningTokens: int
 
 
-class OCIPropmtTokensDetails(BaseModel):
+class OCIPromptTokensDetails(BaseModel):
     """Prompt token details in the OCI response."""
 
     cachedTokens: int
@@ -129,12 +129,12 @@ class OCIPropmtTokensDetails(BaseModel):
 
 class OCIResponseUsage(BaseModel):
     """Token usage in the OCI response."""
-
+    
     promptTokens: int
     completionTokens: int
     totalTokens: int
-    completionTokensDetails: OCICompletionTokenDetails
-    promptTokensDetails: OCIPropmtTokensDetails
+    completionTokensDetails: Optional[OCICompletionTokenDetails] = None
+    promptTokensDetails: Optional[OCIPromptTokensDetails] = None
 
 
 class OCIResponseChoice(BaseModel):
diff --git a/tests/test_litellm/llms/oci/chat/test_oci_chat_transformation.py b/tests/test_litellm/llms/oci/chat/test_oci_chat_transformation.py
index 547d4bf807..9ff93dfc1a 100644
--- a/tests/test_litellm/llms/oci/chat/test_oci_chat_transformation.py
+++ b/tests/test_litellm/llms/oci/chat/test_oci_chat_transformation.py
@@ -213,6 +213,10 @@ class TestOCIChatConfig:
         assert result.usage.prompt_tokens == 10 # type: ignore
         assert result.usage.completion_tokens == 20 # type: ignore
         assert result.usage.total_tokens == 30 # type: ignore
+        # These are not handled in the transformer, TBH no idea why they are here
+        # but, for now, they seem to be always None
+        assert result.usage.completion_tokens_details is None
+        assert result.usage.prompt_tokens_details is None
 
     def test_transform_response_with_tool_calls(self):
         """