diff --git a/frontend/src/composables/useAi.ts b/frontend/src/composables/useAi.ts
index 25d0fc7..a1b04a2 100644
--- a/frontend/src/composables/useAi.ts
+++ b/frontend/src/composables/useAi.ts
@@ -45,6 +45,7 @@ export function useAi() {
   }
 
   // 할 일(체크리스트) 추천 — 실패는 호출측에서 인라인 처리(silent)
+  // AI 생성은 기본 10초 타임아웃을 넘기므로 넉넉히(백엔드 abort 30초보다 길게) 둔다
   async function suggestChecklist(payload: {
     projectId: string
     title: string
@@ -52,6 +53,7 @@ export function useAi() {
   }): Promise<SuggestChecklistResult> {
     return (await api.post('/ai/suggest-checklist', payload, {
       silent: true,
+      timeout: 60000,
     })) as unknown as SuggestChecklistResult
   }