diff --git a/libs/sdk-py/langgraph_sdk/_async/assistants.py b/libs/sdk-py/langgraph_sdk/_async/assistants.py
index 6a8885d14..3620401cb 100644
--- a/libs/sdk-py/langgraph_sdk/_async/assistants.py
+++ b/libs/sdk-py/langgraph_sdk/_async/assistants.py
@@ -425,9 +425,9 @@ class AssistantsClient:
         payload: dict[str, Any] = {}
         if graph_id:
             payload["graph_id"] = graph_id
-        if config:
+        if config is not None:
             payload["config"] = config
-        if context:
+        if context is not None:
             payload["context"] = context
         if metadata:
             payload["metadata"] = metadata
diff --git a/libs/sdk-py/langgraph_sdk/_sync/assistants.py b/libs/sdk-py/langgraph_sdk/_sync/assistants.py
index 56facfbcc..272fd306b 100644
--- a/libs/sdk-py/langgraph_sdk/_sync/assistants.py
+++ b/libs/sdk-py/langgraph_sdk/_sync/assistants.py
@@ -427,9 +427,9 @@ class SyncAssistantsClient:
         payload: dict[str, Any] = {}
         if graph_id:
             payload["graph_id"] = graph_id
-        if config:
+        if config is not None:
             payload["config"] = config
-        if context:
+        if context is not None:
             payload["context"] = context
         if metadata:
             payload["metadata"] = metadata