diff --git a/google/genai/batches.py b/google/genai/batches.py
index 5223a4df0..f32d4623f 100644
--- a/google/genai/batches.py
+++ b/google/genai/batches.py
@@ -1211,6 +1211,9 @@ def _InlinedResponse_from_mldev(
   if getv(from_object, ['error']) is not None:
     setv(to_object, ['error'], getv(from_object, ['error']))
 
+  if getv(from_object, ['metadata']) is not None:
+    setv(to_object, ['metadata'], getv(from_object, ['metadata']))
+
   return to_object
 
 
diff --git a/google/genai/types.py b/google/genai/types.py
index e932e0373..251e0a018 100644
--- a/google/genai/types.py
+++ b/google/genai/types.py
@@ -14230,6 +14230,10 @@ class InlinedResponse(_common.BaseModel):
       description="""The error encountered while processing the request.
       """,
   )
+  metadata: Optional[dict[str, str]] = Field(
+      default=None,
+      description="""The metadata associated with the request.""",
+  )
 
 
 class InlinedResponseDict(TypedDict, total=False):
@@ -14243,6 +14247,9 @@ class InlinedResponseDict(TypedDict, total=False):
   """The error encountered while processing the request.
       """
 
+  metadata: Optional[dict[str, str]]
+  """The metadata associated with the request."""
+
 
 InlinedResponseOrDict = Union[InlinedResponse, InlinedResponseDict]