diff --git a/src/index.ts b/src/index.ts
index 75b4c57..13b1818 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -255,6 +255,10 @@ const OhMyOpenCodePlugin: Plugin = async (ctx) => {
     },
 
     "chat.message": async (input, output) => {
+      if (input.agent === "Sisyphus") {
+        (output.message as Record<string, unknown>).variant = "max"
+      }
+
       await claudeCodeHooks["chat.message"]?.(input, output);
       await keywordDetector?.["chat.message"]?.(input, output);
       await contextInjector["chat.message"]?.(input, output);