diff --git a/packages/components/nodes/chatmodels/ChatOpenAI/ChatOpenAI.ts b/packages/components/nodes/chatmodels/ChatOpenAI/ChatOpenAI.ts
index 03c13fee9b0..efe39111919 100644
--- a/packages/components/nodes/chatmodels/ChatOpenAI/ChatOpenAI.ts
+++ b/packages/components/nodes/chatmodels/ChatOpenAI/ChatOpenAI.ts
@@ -280,12 +280,26 @@ class ChatOpenAI_ChatModels implements INode {
 
         if (baseOptions) {
             try {
-                parsedBaseOptions = typeof baseOptions === 'object' ? baseOptions : JSON.parse(baseOptions)
+                parsedBaseOptions = typeof baseOptions === 'object' ? { ...baseOptions } : JSON.parse(baseOptions)
             } catch (exception) {
                 throw new Error("Invalid JSON in the ChatOpenAI's BaseOptions: " + exception)
             }
         }
 
+        if (parsedBaseOptions?.stop) {
+            const { stop, ...restBaseOptions } = parsedBaseOptions
+            parsedBaseOptions = Object.keys(restBaseOptions).length ? restBaseOptions : undefined
+
+            if (!isReasoningModelOpenAI(modelName) && !obj.stop) {
+                obj.stop = Array.isArray(stop)
+                    ? stop.map((item) => String(item).trim()).filter(Boolean)
+                    : String(stop)
+                          .split(',')
+                          .map((item) => item.trim())
+                          .filter(Boolean)
+            }
+        }
+
         if (basePath || parsedBaseOptions) {
             obj.configuration = {
                 baseURL: basePath,