diff --git a/packages/core/src/core/client.ts b/packages/core/src/core/client.ts
index 5e4848c68f..fefc95a9fe 100644
--- a/packages/core/src/core/client.ts
+++ b/packages/core/src/core/client.ts
@@ -72,8 +72,9 @@ const MAX_TURNS = 100;
 export class GeminiClient {
   private chat?: GeminiChat;
   private readonly generateContentConfig: GenerateContentConfig = {
-    temperature: 0,
-    topP: 1,
+    temperature: 1,
+    topP: 0.95,
+    topK: 64,
   };
   private sessionTurnCount = 0;