diff --git a/apps/application/workflow/nodes/ai_chat_node/ai_chat_node.py b/apps/application/workflow/nodes/ai_chat_node/ai_chat_node.py
index c5946a77eca..72943ed5e28 100644
--- a/apps/application/workflow/nodes/ai_chat_node/ai_chat_node.py
+++ b/apps/application/workflow/nodes/ai_chat_node/ai_chat_node.py
@@ -401,7 +401,7 @@ async def _stream_response(
         reasoning_content = ""
         try:
             node_info = NodeInfo(self.get_node_id(), self.get_node_name(), Status.RUNNING)
-            model_setting = self.get_context("model_setting") or {}
+            model_setting = self.data.get("model_setting") or {}
             reasoning = Reasoning(
                 model_setting.get("reasoning_content_start", "<think>"),
                 model_setting.get("reasoning_content_end", "</think>"),