diff --git a/firebase-ai/CHANGELOG.md b/firebase-ai/CHANGELOG.md
index 91e60605fd7..241a23f0f63 100644
--- a/firebase-ai/CHANGELOG.md
+++ b/firebase-ai/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Unreleased
 
+* [fixed] Fixed `FirebaseAI.getInstance` StackOverflowException (#6971)
 * [fixed] Fixed an issue that was causing the SDK to send empty `FunctionDeclaration` descriptions to the API. 
 
 # 16.0.0
diff --git a/firebase-ai/src/main/kotlin/com/google/firebase/ai/FirebaseAI.kt b/firebase-ai/src/main/kotlin/com/google/firebase/ai/FirebaseAI.kt
index bbce7546eff..86eb8057b1d 100644
--- a/firebase-ai/src/main/kotlin/com/google/firebase/ai/FirebaseAI.kt
+++ b/firebase-ai/src/main/kotlin/com/google/firebase/ai/FirebaseAI.kt
@@ -220,7 +220,9 @@ internal constructor(
     }
 
     /** The [FirebaseAI] instance for the provided [FirebaseApp] using the Google AI Backend. */
-    @JvmStatic public fun getInstance(app: FirebaseApp): FirebaseAI = getInstance(app)
+    @JvmStatic
+    public fun getInstance(app: FirebaseApp): FirebaseAI =
+      getInstance(app, GenerativeBackend.googleAI())
 
     private const val GEMINI_MODEL_NAME_PREFIX = "gemini-"