diff --git a/packages/firebase_ai/firebase_ai/lib/src/firebase_ai.dart b/packages/firebase_ai/firebase_ai/lib/src/firebase_ai.dart
index d209d74161c4..7f3df0d1a3ef 100644
--- a/packages/firebase_ai/firebase_ai/lib/src/firebase_ai.dart
+++ b/packages/firebase_ai/firebase_ai/lib/src/firebase_ai.dart
@@ -68,7 +68,7 @@ class FirebaseAI extends FirebasePluginPlatform {
     bool? useLimitedUseAppCheckTokens,
   }) {
     app ??= Firebase.app();
-    var instanceKey = '${app.name}::vertexai';
+    var instanceKey = '${app.name}::vertexai::$location';
 
     if (_cachedInstances.containsKey(instanceKey)) {
       return _cachedInstances[instanceKey]!;