diff --git a/src/Providers/OpenAI/Support/StructuredModeResolver.php b/src/Providers/OpenAI/Support/StructuredModeResolver.php
index ea77ba961..182c9c863 100644
--- a/src/Providers/OpenAI/Support/StructuredModeResolver.php
+++ b/src/Providers/OpenAI/Support/StructuredModeResolver.php
@@ -43,6 +43,8 @@ protected static function supportsStructuredMode(string $model): bool
             'gpt-5.1',
             'gpt-5.2',
             'gpt-5.4',
+            'gpt-5.4-mini',
+            'gpt-5.4-nano',
         ]);
     }