diff --git a/src/renderer/src/i18n/locales/en-us.json b/src/renderer/src/i18n/locales/en-us.json
index 01758be838..3e58f67475 100644
--- a/src/renderer/src/i18n/locales/en-us.json
+++ b/src/renderer/src/i18n/locales/en-us.json
@@ -51,6 +51,7 @@
       "settings.reasoning_effort.high": "high",
       "settings.reasoning_effort.low": "low",
       "settings.reasoning_effort.medium": "medium",
+      "settings.reasoning_effort.off": "off",
       "settings.reasoning_effort.tip": "Only supports reasoning models",
       "title": "Assistants"
     },
diff --git a/src/renderer/src/i18n/locales/ja-jp.json b/src/renderer/src/i18n/locales/ja-jp.json
index b0c23706b8..aacfe3b57e 100644
--- a/src/renderer/src/i18n/locales/ja-jp.json
+++ b/src/renderer/src/i18n/locales/ja-jp.json
@@ -52,6 +52,7 @@
       "settings.reasoning_effort.high": "長い",
       "settings.reasoning_effort.low": "短い",
       "settings.reasoning_effort.medium": "中程度",
+      "settings.reasoning_effort.off": "オフ",
       "settings.reasoning_effort.tip": "この設定は推論モデルのみサポートしています"
     },
     "auth": {
diff --git a/src/renderer/src/i18n/locales/ru-ru.json b/src/renderer/src/i18n/locales/ru-ru.json
index b78842acb8..8aae527bcf 100644
--- a/src/renderer/src/i18n/locales/ru-ru.json
+++ b/src/renderer/src/i18n/locales/ru-ru.json
@@ -52,6 +52,7 @@
       "settings.reasoning_effort.high": "Длинная",
       "settings.reasoning_effort.low": "Короткая",
       "settings.reasoning_effort.medium": "Средняя",
+      "settings.reasoning_effort.off": "Выключено",
       "settings.reasoning_effort.tip": "Эта настройка поддерживается только моделями с рассуждением"
     },
     "auth": {
diff --git a/src/renderer/src/i18n/locales/zh-cn.json b/src/renderer/src/i18n/locales/zh-cn.json
index 82b66eb2d1..55cc73e022 100644
--- a/src/renderer/src/i18n/locales/zh-cn.json
+++ b/src/renderer/src/i18n/locales/zh-cn.json
@@ -51,6 +51,7 @@
       "settings.reasoning_effort.high": "长",
       "settings.reasoning_effort.low": "短",
       "settings.reasoning_effort.medium": "中",
+      "settings.reasoning_effort.off": "关",
       "settings.reasoning_effort.tip": "该设置仅支持推理模型",
       "title": "助手"
     },
diff --git a/src/renderer/src/i18n/locales/zh-tw.json b/src/renderer/src/i18n/locales/zh-tw.json
index fb12f08f84..f6f6d2b83d 100644
--- a/src/renderer/src/i18n/locales/zh-tw.json
+++ b/src/renderer/src/i18n/locales/zh-tw.json
@@ -51,6 +51,7 @@
       "settings.reasoning_effort.high": "長",
       "settings.reasoning_effort.low": "短",
       "settings.reasoning_effort.medium": "中",
+      "settings.reasoning_effort.off": "關",
       "settings.reasoning_effort.tip": "該設置僅支持推理模型",
       "title": "助手"
     },
diff --git a/src/renderer/src/pages/settings/AssistantSettings/AssistantModelSettings.tsx b/src/renderer/src/pages/settings/AssistantSettings/AssistantModelSettings.tsx
index 580018e4d4..6d31beeaf4 100644
--- a/src/renderer/src/pages/settings/AssistantSettings/AssistantModelSettings.tsx
+++ b/src/renderer/src/pages/settings/AssistantSettings/AssistantModelSettings.tsx
@@ -23,7 +23,7 @@ const AssistantModelSettings: FC<Props> = ({ assistant, updateAssistant, updateA
   const [contextCount, setContextCount] = useState(assistant?.settings?.contextCount ?? DEFAULT_CONTEXTCOUNT)
   const [enableMaxTokens, setEnableMaxTokens] = useState(assistant?.settings?.enableMaxTokens ?? false)
   const [maxTokens, setMaxTokens] = useState(assistant?.settings?.maxTokens ?? 0)
-  const [reasoningEffort, setReasoningEffort] = useState(assistant?.settings?.reasoning_effort ?? 'medium')
+  const [reasoningEffort, setReasoningEffort] = useState(assistant?.settings?.reasoning_effort)
   const [streamOutput, setStreamOutput] = useState(assistant?.settings?.streamOutput ?? true)
   const [defaultModel, setDefaultModel] = useState(assistant?.defaultModel)
   const [topP, setTopP] = useState(assistant?.settings?.topP ?? 1)
@@ -391,6 +391,7 @@ const AssistantModelSettings: FC<Props> = ({ assistant, updateAssistant, updateA
           <Radio.Button value="low">{t('assistants.settings.reasoning_effort.low')}</Radio.Button>
           <Radio.Button value="medium">{t('assistants.settings.reasoning_effort.medium')}</Radio.Button>
           <Radio.Button value="high">{t('assistants.settings.reasoning_effort.high')}</Radio.Button>
+          <Radio.Button value={undefined}>{t('assistants.settings.reasoning_effort.off')}</Radio.Button>
         </Radio.Group>
       </SettingRow>
       <Divider style={{ margin: '10px 0' }} />