diff --git a/api/app/clients/OpenAIClient.js b/api/app/clients/OpenAIClient.js
index c3e9a24ef3..e4c12ee587 100644
--- a/api/app/clients/OpenAIClient.js
+++ b/api/app/clients/OpenAIClient.js
@@ -1309,7 +1309,7 @@ ${convo}
       /** @type {(value: void | PromiseLike<void>) => void} */
       let streamResolve;
 
-      if (modelOptions.stream && /\bo1\b/i.test(modelOptions.model)) {
+      if (modelOptions.stream && this.isO1Model) {
         delete modelOptions.stream;
         delete modelOptions.stop;
       }