diff --git a/google/genai/_interactions/resources/interactions.py b/google/genai/_interactions/resources/interactions.py
index 9d7a535df..919b00a17 100644
--- a/google/genai/_interactions/resources/interactions.py
+++ b/google/genai/_interactions/resources/interactions.py
@@ -96,7 +96,7 @@ def create(
 
           model: The name of the `Model` used for generating the interaction.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           generation_config: Input only. Configuration parameters for the model interaction.
 
@@ -161,7 +161,7 @@ def create(
 
           stream: Input only. Whether the interaction will be streamed.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           generation_config: Input only. Configuration parameters for the model interaction.
 
@@ -224,7 +224,7 @@ def create(
 
           agent_config: Configuration for the agent.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           previous_interaction_id: The ID of the previous interaction, if any.
 
@@ -289,7 +289,7 @@ def create(
 
           agent_config: Configuration for the agent.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           previous_interaction_id: The ID of the previous interaction, if any.
 
@@ -350,7 +350,7 @@ def create(
 
           stream: Input only. Whether the interaction will be streamed.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           generation_config: Input only. Configuration parameters for the model interaction.
 
@@ -713,7 +713,7 @@ async def create(
 
           model: The name of the `Model` used for generating the interaction.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           generation_config: Input only. Configuration parameters for the model interaction.
 
@@ -778,7 +778,7 @@ async def create(
 
           stream: Input only. Whether the interaction will be streamed.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           generation_config: Input only. Configuration parameters for the model interaction.
 
@@ -841,7 +841,7 @@ async def create(
 
           agent_config: Configuration for the agent.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           previous_interaction_id: The ID of the previous interaction, if any.
 
@@ -906,7 +906,7 @@ async def create(
 
           agent_config: Configuration for the agent.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           previous_interaction_id: The ID of the previous interaction, if any.
 
@@ -967,7 +967,7 @@ async def create(
 
           stream: Input only. Whether the interaction will be streamed.
 
-          background: Whether to run the model interaction in the background.
+          background: Input only. Whether to run the model interaction in the background.
 
           generation_config: Input only. Configuration parameters for the model interaction.
 
diff --git a/google/genai/_interactions/types/interaction_create_params.py b/google/genai/_interactions/types/interaction_create_params.py
index f4bd6630d..6536b5023 100644
--- a/google/genai/_interactions/types/interaction_create_params.py
+++ b/google/genai/_interactions/types/interaction_create_params.py
@@ -68,7 +68,7 @@ class BaseCreateModelInteractionParams(TypedDict, total=False):
     api_version: str
 
     background: bool
-    """Whether to run the model interaction in the background."""
+    """Input only. Whether to run the model interaction in the background."""
 
     generation_config: GenerationConfigParam
     """Input only. Configuration parameters for the model interaction."""
@@ -136,7 +136,7 @@ class BaseCreateAgentInteractionParams(TypedDict, total=False):
     """Configuration for the agent."""
 
     background: bool
-    """Whether to run the model interaction in the background."""
+    """Input only. Whether to run the model interaction in the background."""
 
     previous_interaction_id: str
     """The ID of the previous interaction, if any."""