diff --git a/google/genai/_interactions/types/error_event.py b/google/genai/_interactions/types/error_event.py
index f2edef4a6..09d9d80ad 100644
--- a/google/genai/_interactions/types/error_event.py
+++ b/google/genai/_interactions/types/error_event.py
@@ -37,7 +37,7 @@ class Error(BaseModel):
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""
 
 
diff --git a/google/genai/_interactions/types/interaction_completed_event.py b/google/genai/_interactions/types/interaction_completed_event.py
index 5a052b408..d6d9c8a9b 100644
--- a/google/genai/_interactions/types/interaction_completed_event.py
+++ b/google/genai/_interactions/types/interaction_completed_event.py
@@ -28,7 +28,7 @@
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""
 
 
diff --git a/google/genai/_interactions/types/interaction_created_event.py b/google/genai/_interactions/types/interaction_created_event.py
index 1a12a1962..3403bf6ae 100644
--- a/google/genai/_interactions/types/interaction_created_event.py
+++ b/google/genai/_interactions/types/interaction_created_event.py
@@ -28,7 +28,7 @@
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""
 
 
diff --git a/google/genai/_interactions/types/interaction_status_update.py b/google/genai/_interactions/types/interaction_status_update.py
index b496de250..4a11f88c1 100644
--- a/google/genai/_interactions/types/interaction_status_update.py
+++ b/google/genai/_interactions/types/interaction_status_update.py
@@ -27,7 +27,7 @@
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""
 
 
diff --git a/google/genai/_interactions/types/step_delta.py b/google/genai/_interactions/types/step_delta.py
index 957c5626f..2257f1ace 100644
--- a/google/genai/_interactions/types/step_delta.py
+++ b/google/genai/_interactions/types/step_delta.py
@@ -362,7 +362,7 @@ class DeltaFunctionResult(BaseModel):
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""
 
 
diff --git a/google/genai/_interactions/types/step_start.py b/google/genai/_interactions/types/step_start.py
index 98722ec96..4b667bcda 100644
--- a/google/genai/_interactions/types/step_start.py
+++ b/google/genai/_interactions/types/step_start.py
@@ -28,7 +28,7 @@
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""
 
 
diff --git a/google/genai/_interactions/types/step_stop.py b/google/genai/_interactions/types/step_stop.py
index 2170cc6eb..ac9997763 100644
--- a/google/genai/_interactions/types/step_stop.py
+++ b/google/genai/_interactions/types/step_stop.py
@@ -27,7 +27,7 @@
 class Metadata(BaseModel):
     """Optional metadata accompanying ANY streamed event."""
 
-    usage: Optional[Usage] = None
+    total_usage: Optional[Usage] = None
     """Statistics on the interaction request's token usage."""