diff --git a/guardrails/classes/generic/serializeable.py b/guardrails/classes/generic/serializeable.py
index 888f7267d..4620fd8c4 100644
--- a/guardrails/classes/generic/serializeable.py
+++ b/guardrails/classes/generic/serializeable.py
@@ -35,13 +35,14 @@ class Serializeable:
     @classmethod
     def from_dict(cls, data: Dict[str, Any]):
         annotations = get_annotations(cls)
-        attributes = dict.keys(annotations)
-        snake_case_kwargs = {
-            snake_case(k): data.get(k) for k in data if snake_case(k) in attributes
-        }
-        snake_case_kwargs["encoder"] = snake_case_kwargs.get(
-            "encoder", SerializeableJSONEncoder
-        )
+        # Convert the keys of annotations dict to a set for faster lookup
+        attributes = set(annotations)
+        # Precompute snake_case for each input key, avoid repeated computation in the comprehension
+        sc_data = {snake_case(k): v for k, v in data.items()}
+        # Only keep those that are present in attributes
+        snake_case_kwargs = {k: v for k, v in sc_data.items() if k in attributes}
+        # Use setdefault to avoid recomputing key and ensure compatible default
+        snake_case_kwargs.setdefault("encoder", SerializeableJSONEncoder)
         return cls(**snake_case_kwargs)  # type: ignore
 
     @property