diff --git a/ng-dev/ai/consts.ts b/ng-dev/ai/consts.ts
index 6150c770e7..664c2090a9 100644
--- a/ng-dev/ai/consts.ts
+++ b/ng-dev/ai/consts.ts
@@ -7,7 +7,7 @@
  */
 
 /** Default model to use for AI-based scripts. */
-export const DEFAULT_MODEL = 'gemini-2.5-pro';
+export const DEFAULT_MODEL = 'gemini-3.1-pro-preview';
 
 /** Default temperature for AI-based scripts. */
 export const DEFAULT_TEMPERATURE = 0.1;