diff --git a/src/components/settings/acp-agent-settings.tsx b/src/components/settings/acp-agent-settings.tsx
index 42a12ac..f66aab5 100644
--- a/src/components/settings/acp-agent-settings.tsx
+++ b/src/components/settings/acp-agent-settings.tsx
@@ -254,11 +254,11 @@ const CLAUDE_MODEL_ENV_KEYS = {
 
 const CLAUDE_EFFORT_LEVEL_CONFIG_KEY = "effortLevel"
 
-type ClaudeEffortLevel = "" | "low" | "medium" | "high" | "max"
+type ClaudeEffortLevel = "" | "low" | "medium" | "high"
 
 const CLAUDE_EFFORT_LEVEL_VALUES: ReadonlyArray<
   Exclude<ClaudeEffortLevel, "">
-> = ["low", "medium", "high", "max"]
+> = ["low", "medium", "high"]
 
 function normalizeClaudeEffortLevel(value: unknown): ClaudeEffortLevel {
   if (typeof value !== "string") return ""
@@ -266,8 +266,7 @@ function normalizeClaudeEffortLevel(value: unknown): ClaudeEffortLevel {
   if (
     normalized === "low" ||
     normalized === "medium" ||
-    normalized === "high" ||
-    normalized === "max"
+    normalized === "high"
   ) {
     return normalized
   }
@@ -7203,9 +7202,7 @@ supports_websockets = true`}
                               </SelectItem>
                               {CLAUDE_EFFORT_LEVEL_VALUES.map((value) => (
                                 <SelectItem key={value} value={value}>
-                                  {value === "max"
-                                    ? t("claude.effortLevelMax")
-                                    : t(`claude.effortLevel_${value}`)}
+                                  {t(`claude.effortLevel_${value}`)}
                                 </SelectItem>
                               ))}
                             </SelectContent>
diff --git a/src/i18n/messages/ar.json b/src/i18n/messages/ar.json
index afaec10..8f96b1c 100644
--- a/src/i18n/messages/ar.json
+++ b/src/i18n/messages/ar.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "المستوى الافتراضي",
       "effortLevel_low": "منخفض",
       "effortLevel_medium": "متوسط",
-      "effortLevel_high": "مرتفع",
-      "effortLevelMax": "الأقصى (Opus فقط)"
+      "effortLevel_high": "مرتفع"
     },
     "dialogs": {
       "confirmDeleteProvider": "حذف المزود {providerId}؟",
diff --git a/src/i18n/messages/de.json b/src/i18n/messages/de.json
index 1edf053..7f2e230 100644
--- a/src/i18n/messages/de.json
+++ b/src/i18n/messages/de.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "Standardstufe",
       "effortLevel_low": "Niedrig",
       "effortLevel_medium": "Mittel",
-      "effortLevel_high": "Hoch",
-      "effortLevelMax": "Maximum (nur Opus)"
+      "effortLevel_high": "Hoch"
     },
     "dialogs": {
       "confirmDeleteProvider": "Provider {providerId} löschen?",
diff --git a/src/i18n/messages/en.json b/src/i18n/messages/en.json
index 02b01cc..59fdb1b 100644
--- a/src/i18n/messages/en.json
+++ b/src/i18n/messages/en.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "Default Level",
       "effortLevel_low": "Low",
       "effortLevel_medium": "Medium",
-      "effortLevel_high": "High",
-      "effortLevelMax": "Max (Opus only)"
+      "effortLevel_high": "High"
     },
     "dialogs": {
       "confirmDeleteProvider": "Delete Provider {providerId}?",
diff --git a/src/i18n/messages/es.json b/src/i18n/messages/es.json
index 73bea2d..7229992 100644
--- a/src/i18n/messages/es.json
+++ b/src/i18n/messages/es.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "Nivel predeterminado",
       "effortLevel_low": "Bajo",
       "effortLevel_medium": "Medio",
-      "effortLevel_high": "Alto",
-      "effortLevelMax": "Máximo (solo Opus)"
+      "effortLevel_high": "Alto"
     },
     "dialogs": {
       "confirmDeleteProvider": "¿Eliminar proveedor {providerId}?",
diff --git a/src/i18n/messages/fr.json b/src/i18n/messages/fr.json
index afab12d..15dff46 100644
--- a/src/i18n/messages/fr.json
+++ b/src/i18n/messages/fr.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "Niveau par défaut",
       "effortLevel_low": "Bas",
       "effortLevel_medium": "Moyen",
-      "effortLevel_high": "Élevé",
-      "effortLevelMax": "Maximum (Opus uniquement)"
+      "effortLevel_high": "Élevé"
     },
     "dialogs": {
       "confirmDeleteProvider": "Supprimer le provider {providerId} ?",
diff --git a/src/i18n/messages/ja.json b/src/i18n/messages/ja.json
index 511228d..bc79fc6 100644
--- a/src/i18n/messages/ja.json
+++ b/src/i18n/messages/ja.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "デフォルトレベル",
       "effortLevel_low": "低",
       "effortLevel_medium": "中",
-      "effortLevel_high": "高",
-      "effortLevelMax": "最大（Opus のみ対応）"
+      "effortLevel_high": "高"
     },
     "dialogs": {
       "confirmDeleteProvider": "Provider {providerId} を削除しますか？",
diff --git a/src/i18n/messages/ko.json b/src/i18n/messages/ko.json
index 28df103..5072501 100644
--- a/src/i18n/messages/ko.json
+++ b/src/i18n/messages/ko.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "기본 수준",
       "effortLevel_low": "낮음",
       "effortLevel_medium": "중간",
-      "effortLevel_high": "높음",
-      "effortLevelMax": "최고 (Opus만 지원)"
+      "effortLevel_high": "높음"
     },
     "dialogs": {
       "confirmDeleteProvider": "Provider {providerId}를 삭제하시겠습니까?",
diff --git a/src/i18n/messages/pt.json b/src/i18n/messages/pt.json
index bdbde64..a2b3b8d 100644
--- a/src/i18n/messages/pt.json
+++ b/src/i18n/messages/pt.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "Nível padrão",
       "effortLevel_low": "Baixo",
       "effortLevel_medium": "Médio",
-      "effortLevel_high": "Alto",
-      "effortLevelMax": "Máximo (apenas Opus)"
+      "effortLevel_high": "Alto"
     },
     "dialogs": {
       "confirmDeleteProvider": "Excluir o provedor {providerId}?",
diff --git a/src/i18n/messages/zh-CN.json b/src/i18n/messages/zh-CN.json
index f1ebefa..b5b3aca 100644
--- a/src/i18n/messages/zh-CN.json
+++ b/src/i18n/messages/zh-CN.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "默认级别",
       "effortLevel_low": "低",
       "effortLevel_medium": "中",
-      "effortLevel_high": "高",
-      "effortLevelMax": "最高（仅 Opus 支持）"
+      "effortLevel_high": "高"
     },
     "dialogs": {
       "confirmDeleteProvider": "确认删除 Provider {providerId}？",
diff --git a/src/i18n/messages/zh-TW.json b/src/i18n/messages/zh-TW.json
index 767cd29..ca55dda 100644
--- a/src/i18n/messages/zh-TW.json
+++ b/src/i18n/messages/zh-TW.json
@@ -631,8 +631,7 @@
       "effortLevelDefault": "預設等級",
       "effortLevel_low": "低",
       "effortLevel_medium": "中",
-      "effortLevel_high": "高",
-      "effortLevelMax": "最高（僅 Opus 支援）"
+      "effortLevel_high": "高"
     },
     "dialogs": {
       "confirmDeleteProvider": "確認刪除 Provider {providerId}？",