diff --git a/captum/attr/_core/llm_attr.py b/captum/attr/_core/llm_attr.py
index 7c124b727..90540b1bd 100644
--- a/captum/attr/_core/llm_attr.py
+++ b/captum/attr/_core/llm_attr.py
@@ -55,6 +55,7 @@ class LLMAttributionResult:
     token_attr: Optional[Tensor]
     input_tokens: List[str]
     output_tokens: List[str]
+    output_probs: Optional[Tensor] = None
 
     @property
     def seq_attr_dict(self) -> Dict[str, float]: