diff --git a/frontend/src/i18n/locales/de.json b/frontend/src/i18n/locales/de.json
index 50ed47a..4bdc859 100644
--- a/frontend/src/i18n/locales/de.json
+++ b/frontend/src/i18n/locales/de.json
@@ -1404,5 +1404,41 @@
     "defaultProvider": "Standard-Anbieter",
     "defaultTag": "(Standard)",
     "confirmDeleteProvider": "Anbieter wirklich löschen?"
+  },
+  "proactiveAI": {
+    "categories": {
+      "mail": "E-Mails",
+      "tasks": "Aufgaben",
+      "contacts": "Kontakte",
+      "companies": "Firmen",
+      "insights": "Erkenntnisse"
+    },
+    "models": {
+      "deepseekV4": "DeepSeek V4 (empfohlen)",
+      "deepseekV4Pro": "DeepSeek V4 Pro (präzise)",
+      "llama32": "Llama 3.2 (Alternative)",
+      "gpt4oMiniOllama": "GPT-4o mini via Ollama",
+      "gpt4oMiniDirect": "GPT-4o mini (Direct OpenAI)"
+    },
+    "loading": "Lade Einstellungen...",
+    "title": "Proaktive KI",
+    "toggleDescription": "Aktiviert oder deaktiviert alle Vorschläge",
+    "categoriesTitle": "Kategorien",
+    "categoriesDescription": "Für welche Bereiche sollen Vorschläge generiert werden?",
+    "confidenceThreshold": "Confidence Schwellwert",
+    "confidenceDescription": "Nur Vorschläge mit höherer Confidence anzeigen",
+    "all": "Alle",
+    "veryConfident": "Sehr sicher",
+    "rateLimitTitle": "Rate Limit",
+    "rateLimitDescription": "Mindestabstand zwischen Vorschlägen",
+    "modelTitle": "KI Modell (Ollama Cloud)",
+    "modelDescription": "Wähle das Modell für Vorschläge. DeepSeek V4 ist empfohlen für beste Performance/Kosten.",
+    "heartbeatTitle": "Heartbeat",
+    "heartbeatDescription": "Regelmäßige Status-Meldung an KI-Raum",
+    "heartbeatEnable": "Heartbeat aktivieren",
+    "interval": "Intervall",
+    "targetRoom": "Ziel-Raum",
+    "targetRoomDescription": "Name des Raums in der Kommunikation, an den Status-Meldungen gesendet werden.",
+    "defaultRoomName": "Live KI"
   }
 }
diff --git a/frontend/src/i18n/locales/en.json b/frontend/src/i18n/locales/en.json
index c0316b7..3cf840e 100644
--- a/frontend/src/i18n/locales/en.json
+++ b/frontend/src/i18n/locales/en.json
@@ -1404,5 +1404,41 @@
     "defaultProvider": "Default provider",
     "defaultTag": "(default)",
     "confirmDeleteProvider": "Really delete provider?"
+  },
+  "proactiveAI": {
+    "categories": {
+      "mail": "Emails",
+      "tasks": "Tasks",
+      "contacts": "Contacts",
+      "companies": "Companies",
+      "insights": "Insights"
+    },
+    "models": {
+      "deepseekV4": "DeepSeek V4 (empfohlen)",
+      "deepseekV4Pro": "DeepSeek V4 Pro (präzise)",
+      "llama32": "Llama 3.2 (Alternative)",
+      "gpt4oMiniOllama": "GPT-4o mini via Ollama",
+      "gpt4oMiniDirect": "GPT-4o mini (Direct OpenAI)"
+    },
+    "loading": "Loading settings...",
+    "title": "Proactive AI",
+    "toggleDescription": "Enables or disables all suggestions",
+    "categoriesTitle": "Categories",
+    "categoriesDescription": "Which areas should suggestions be generated for?",
+    "confidenceThreshold": "Confidence threshold",
+    "confidenceDescription": "Only show suggestions with higher confidence",
+    "all": "All",
+    "veryConfident": "Very confident",
+    "rateLimitTitle": "Rate limit",
+    "rateLimitDescription": "Minimum distance between suggestions",
+    "modelTitle": "AI Model (Ollama Cloud)",
+    "modelDescription": "Choose the model for suggestions. DeepSeek V4 is recommended for best performance/cost.",
+    "heartbeatTitle": "Heartbeat",
+    "heartbeatDescription": "Regular status messages to the AI room",
+    "heartbeatEnable": "Enable heartbeat",
+    "interval": "Interval",
+    "targetRoom": "Target room",
+    "targetRoomDescription": "Name of the room in Communication that status messages are sent to.",
+    "defaultRoomName": "Live AI"
   }
 }
diff --git a/frontend/src/pages/ProactiveAISettings.tsx b/frontend/src/pages/ProactiveAISettings.tsx
index effabc1..9fe657e 100644
--- a/frontend/src/pages/ProactiveAISettings.tsx
+++ b/frontend/src/pages/ProactiveAISettings.tsx
@@ -1,29 +1,16 @@
+import { useTranslation } from 'react-i18next';
 import { useProactiveSettings } from '@/api/aiProactive';
-// TODO: P2-T20 — Replace hardcoded categoryLabels/modelOptions with backend config
 
-const categoryLabels: Record<string, string> = {
-  mail: 'E-Mails',
-  tasks: 'Aufgaben',
-  contacts: 'Kontakte',
-  companies: 'Firmen',
-  insights: 'Erkenntnisse',
-};
-
-const modelOptions = [
-  { value: 'ollama/deepseek-v4', label: 'DeepSeek V4 (empfohlen)' },
-  { value: 'ollama/deepseek-v4-pro', label: 'DeepSeek V4 Pro (präzise)' },
-  { value: 'ollama/llama3.2', label: 'Llama 3.2 (Alternative)' },
-  { value: 'ollama/gpt-4o-mini', label: 'GPT-4o mini via Ollama' },
-  { value: 'gpt-4o-mini', label: 'GPT-4o mini (Direct OpenAI)' },
-];
+const categoryKeys = ['mail', 'tasks', 'contacts', 'companies', 'insights'];
 
 export function ProactiveAISettings() {
+  const { t } = useTranslation();
   const { settings, update } = useProactiveSettings();
 
   if (!settings) {
     return (
       <div className="flex items-center justify-center p-8 text-gray-400">
-        <div className="animate-pulse">Lade Einstellungen...</div>
+        <div className="animate-pulse">{t('proactiveAI.loading')}</div>
       </div>
     );
   }
@@ -41,8 +28,8 @@ export function ProactiveAISettings() {
       {/* Enable/Disable */}
       <div className="flex items-center justify-between p-4 bg-white rounded-lg border border-gray-200">
         <div>
-          <h3 className="font-semibold text-gray-800">Proaktive KI</h3>
-          <p className="text-sm text-gray-500">Aktiviert oder deaktiviert alle Vorschläge</p>
+          <h3 className="font-semibold text-gray-800">{t('proactiveAI.title')}</h3>
+          <p className="text-sm text-gray-500">{t('proactiveAI.toggleDescription')}</p>
         </div>
         <button
           onClick={() => update({ enabled: !settings.enabled })}
@@ -60,10 +47,10 @@ export function ProactiveAISettings() {
 
       {/* Categories */}
       <div className="p-4 bg-white rounded-lg border border-gray-200">
-        <h3 className="font-semibold text-gray-800 mb-3">Kategorien</h3>
-        <p className="text-sm text-gray-500 mb-4">Für welche Bereiche sollen Vorschläge generiert werden?</p>
+        <h3 className="font-semibold text-gray-800 mb-3">{t('proactiveAI.categoriesTitle')}</h3>
+        <p className="text-sm text-gray-500 mb-4">{t('proactiveAI.categoriesDescription')}</p>
         <div className="grid grid-cols-2 gap-3">
-          {Object.entries(categoryLabels).map(([key, label]) => {
+          {categoryKeys.map((key) => {
             const checked = settings.suggestion_categories?.includes(key);
             return (
               <label
@@ -78,7 +65,7 @@ export function ProactiveAISettings() {
                   onChange={() => toggleCategory(key)}
                   className="w-4 h-4 rounded text-blue-500 focus:ring-blue-400"
                 />
-                <span className="text-sm text-gray-700">{label}</span>
+                <span className="text-sm text-gray-700">{t(`proactiveAI.categories.${key}`)}</span>
               </label>
             );
           })}
@@ -88,14 +75,12 @@ export function ProactiveAISettings() {
       {/* Confidence Threshold */}
       <div className="p-4 bg-white rounded-lg border border-gray-200">
         <div className="flex items-center justify-between mb-2">
-          <h3 className="font-semibold text-gray-800">Confidence Schwellwert</h3>
+          <h3 className="font-semibold text-gray-800">{t('proactiveAI.confidenceThreshold')}</h3>
           <span className="text-sm font-mono text-blue-600">
             {Math.round((settings.confidence_threshold || 0.5) * 100)}%
           </span>
         </div>
-        <p className="text-sm text-gray-500 mb-3">
-          Nur Vorschläge mit höherer Confidence anzeigen
-        </p>
+        <p className="text-sm text-gray-500 mb-3">{t('proactiveAI.confidenceDescription')}</p>
         <input
           type="range"
           min="0"
@@ -106,22 +91,20 @@ export function ProactiveAISettings() {
           className="w-full h-2 bg-gray-200 rounded-lg appearance-none cursor-pointer accent-blue-500"
         />
         <div className="flex justify-between text-xs text-gray-400 mt-1">
-          <span>Alle</span>
-          <span>Sehr sicher</span>
+          <span>{t('proactiveAI.all')}</span>
+          <span>{t('proactiveAI.veryConfident')}</span>
         </div>
       </div>
 
       {/* Rate Limit */}
       <div className="p-4 bg-white rounded-lg border border-gray-200">
         <div className="flex items-center justify-between mb-2">
-          <h3 className="font-semibold text-gray-800">Rate Limit</h3>
+          <h3 className="font-semibold text-gray-800">{t('proactiveAI.rateLimitTitle')}</h3>
           <span className="text-sm font-mono text-blue-600">
             {settings.rate_limit_seconds || 10}s
           </span>
         </div>
-        <p className="text-sm text-gray-500 mb-3">
-          Mindestabstand zwischen Vorschlägen
-        </p>
+        <p className="text-sm text-gray-500 mb-3">{t('proactiveAI.rateLimitDescription')}</p>
         <input
           type="range"
           min="5"
@@ -139,18 +122,18 @@ export function ProactiveAISettings() {
 
       {/* Model Selection */}
       <div className="p-4 bg-white rounded-lg border border-gray-200">
-        <h3 className="font-semibold text-gray-800 mb-2">KI Modell (Ollama Cloud)</h3>
-        <p className="text-sm text-gray-500 mb-3">Wähle das Modell für Vorschläge. DeepSeek V4 ist empfohlen für beste Performance/Kosten.</p>
+        <h3 className="font-semibold text-gray-800 mb-2">{t('proactiveAI.modelTitle')}</h3>
+        <p className="text-sm text-gray-500 mb-3">{t('proactiveAI.modelDescription')}</p>
         <select
           value={settings.model || 'ollama/deepseek-v4'}
           onChange={(e) => update({ model: e.target.value })}
           className="w-full px-3 py-2 rounded-lg border border-gray-200 bg-white text-sm text-gray-700 focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none"
         >
-          {modelOptions.map(opt => (
-            <option key={opt.value} value={opt.value}>
-              {opt.label}
-            </option>
-          ))}
+          <option value="ollama/deepseek-v4">{t('proactiveAI.models.deepseekV4')}</option>
+          <option value="ollama/deepseek-v4-pro">{t('proactiveAI.models.deepseekV4Pro')}</option>
+          <option value="ollama/llama3.2">{t('proactiveAI.models.llama32')}</option>
+          <option value="ollama/gpt-4o-mini">{t('proactiveAI.models.gpt4oMiniOllama')}</option>
+          <option value="gpt-4o-mini">{t('proactiveAI.models.gpt4oMiniDirect')}</option>
         </select>
       </div>
 
@@ -158,8 +141,8 @@ export function ProactiveAISettings() {
       <div className="p-4 bg-white rounded-lg border border-gray-200">
         <div className="flex items-center justify-between mb-3">
           <div>
-            <h3 className="font-semibold text-gray-800">Heartbeat</h3>
-            <p className="text-sm text-gray-500">Regelmäßige Status-Meldung an KI-Raum</p>
+            <h3 className="font-semibold text-gray-800">{t('proactiveAI.heartbeatTitle')}</h3>
+            <p className="text-sm text-gray-500">{t('proactiveAI.heartbeatDescription')}</p>
           </div>
           <button
             onClick={() => update({ heartbeat_enabled: !settings.heartbeat_enabled })}
@@ -168,7 +151,7 @@ export function ProactiveAISettings() {
             }`}
             role="switch"
             aria-checked={settings.heartbeat_enabled}
-            aria-label="Heartbeat aktivieren"
+            aria-label={t('proactiveAI.heartbeatEnable')}
           >
             <span
               className={`inline-block h-4 w-4 transform rounded-full bg-white transition-transform ${
@@ -181,7 +164,7 @@ export function ProactiveAISettings() {
           <>
             <div className="mb-4">
               <div className="flex items-center justify-between mb-2">
-                <span className="text-sm font-medium text-gray-700">Intervall</span>
+                <span className="text-sm font-medium text-gray-700">{t('proactiveAI.interval')}</span>
                 <span className="text-sm font-mono text-blue-600">
                   {settings.heartbeat_interval_seconds || 300}s
                 </span>
@@ -201,15 +184,15 @@ export function ProactiveAISettings() {
               </div>
             </div>
             <div>
-              <label className="block text-sm font-medium text-gray-700 mb-1">Ziel-Raum</label>
+              <label className="block text-sm font-medium text-gray-700 mb-1">{t('proactiveAI.targetRoom')}</label>
               <input
                 type="text"
                 value={settings.heartbeat_target_room || 'Live KI'}
                 onChange={(e) => update({ heartbeat_target_room: e.target.value })}
                 className="w-full px-3 py-2 rounded-lg border border-gray-200 bg-white text-sm text-gray-700 focus:ring-2 focus:ring-blue-400 focus:border-blue-400 outline-none"
-                placeholder="Live KI"
+                placeholder={t('proactiveAI.defaultRoomName')}
               />
-              <p className="text-xs text-gray-400 mt-1">Name des Raums in der Kommunikation, an den Status-Meldungen gesendet werden.</p>
+              <p className="text-xs text-gray-400 mt-1">{t('proactiveAI.targetRoomDescription')}</p>
             </div>
           </>
         )}