diff --git a/deployments/genu/GenUDeploymentStack.yaml b/deployments/genu/GenUDeploymentStack.yaml
index 39678d4..c5774af 100644
--- a/deployments/genu/GenUDeploymentStack.yaml
+++ b/deployments/genu/GenUDeploymentStack.yaml
@@ -42,7 +42,7 @@ Parameters:
 
   AdditionalModels:
     Type: String
-    Default: "us.anthropic.claude-opus-4-1-20250805-v1:0"
+    Default: "us.anthropic.claude-opus-4-1-20250805-v1:0,openai.gpt-oss-20b-1:0,openai.gpt-oss-120b-1:0"
     Description: Additional models to be added to the deployment (comma separated)
 
   RAGEnabled: