diff --git a/api/server/routes/assistants/chat.js b/api/server/routes/assistants/chat.js
index 69be8a7b3e4..96a09d02dd8 100644
--- a/api/server/routes/assistants/chat.js
+++ b/api/server/routes/assistants/chat.js
@@ -514,6 +514,7 @@ router.post('/', validateModel, buildEndpointOption, setHeaders, async (req, res
 
     const processRun = async (retry = false) => {
       if (req.app.locals[EModelEndpoint.azureOpenAI]?.assistants) {
+        body.model = openai._options.model;
         openai.attachedFileIds = attachedFileIds;
         openai.visionPromise = visionPromise;
         if (retry) {