diff --git a/backend/.env.example b/backend/.env.example
index 1cca1e1..fb586db 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -13,6 +13,8 @@ DB_PASSWORD=
 
 # AI Model Configuration
 GEMINI_API_KEY=
+ELEVENLABS_API_KEY=
+ELEVENLABS_VOICE_ID=
 
 # Messaging Gateway Settings
 WHATSAPP_GATEWAY_URL=http://localhost:3722
diff --git a/backend/app/Models/ChatbotRule.php b/backend/app/Models/ChatbotRule.php
index feae6f0..1785c1a 100644
--- a/backend/app/Models/ChatbotRule.php
+++ b/backend/app/Models/ChatbotRule.php
@@ -29,6 +29,9 @@ class ChatbotRule extends BaseModel
             if (!empty($rule['gemini_api_key'])) {
                 $rule['gemini_api_key'] = Security::decrypt($rule['gemini_api_key']);
             }
+            if (!empty($rule['elevenlabs_api_key'])) {
+                $rule['elevenlabs_api_key'] = Security::decrypt($rule['elevenlabs_api_key']);
+            }
         }
 
         return $rules;
@@ -53,8 +56,13 @@ class ChatbotRule extends BaseModel
             );
         }
 
-        if ($rule && !empty($rule['gemini_api_key'])) {
-            $rule['gemini_api_key'] = Security::decrypt($rule['gemini_api_key']);
+        if ($rule) {
+            if (!empty($rule['gemini_api_key'])) {
+                $rule['gemini_api_key'] = Security::decrypt($rule['gemini_api_key']);
+            }
+            if (!empty($rule['elevenlabs_api_key'])) {
+                $rule['elevenlabs_api_key'] = Security::decrypt($rule['elevenlabs_api_key']);
+            }
         }
 
         return $rule;
@@ -71,6 +79,10 @@ class ChatbotRule extends BaseModel
             $data['gemini_api_key'] = Security::encrypt($data['gemini_api_key']);
         }
 
+        if (!empty($data['elevenlabs_api_key'])) {
+            $data['elevenlabs_api_key'] = Security::encrypt($data['elevenlabs_api_key']);
+        }
+
         if (isset($data['id'])) {
             $id = $data['id'];
             unset($data['id']);
@@ -89,14 +101,26 @@ class ChatbotRule extends BaseModel
         static $checked = false;
         if ($checked) return;
         try {
-            // Check if column exists
+            // Check if gemini_api_key exists
             $columns = Database::select("SHOW COLUMNS FROM " . static::$table . " LIKE 'gemini_api_key'");
             if (empty($columns)) {
                 Database::execute("ALTER TABLE " . static::$table . " ADD COLUMN gemini_api_key VARCHAR(512) DEFAULT NULL AFTER ai_prompt");
             }
+
+            // Check if elevenlabs_api_key exists
+            $elColumns = Database::select("SHOW COLUMNS FROM " . static::$table . " LIKE 'elevenlabs_api_key'");
+            if (empty($elColumns)) {
+                Database::execute("ALTER TABLE " . static::$table . " ADD COLUMN elevenlabs_api_key VARCHAR(512) DEFAULT NULL AFTER gemini_api_key");
+            }
+
+            // Check if elevenlabs_voice_id exists
+            $voiceColumns = Database::select("SHOW COLUMNS FROM " . static::$table . " LIKE 'elevenlabs_voice_id'");
+            if (empty($voiceColumns)) {
+                Database::execute("ALTER TABLE " . static::$table . " ADD COLUMN elevenlabs_voice_id VARCHAR(100) DEFAULT NULL AFTER elevenlabs_api_key");
+            }
             $checked = true;
         } catch (\Exception $e) {
-            error_log("Failed to ensure chatbot_rules column: " . $e->getMessage());
+            error_log("Failed to ensure chatbot_rules columns: " . $e->getMessage());
         }
     }
 }
diff --git a/backend/app/Services/GeminiService.php b/backend/app/Services/GeminiService.php
index 9fb6f8b..fad4280 100644
--- a/backend/app/Services/GeminiService.php
+++ b/backend/app/Services/GeminiService.php
@@ -214,10 +214,68 @@ class GeminiService
     }
 
     /**
-     * Call Gemini API to generate a native audio (speech) response from text
+     * Call ElevenLabs API to generate a native audio response from text
      */
-    public static function generateAudioResponse(string $apiKey, string $systemPrompt, string $userMessage, string $voiceName = 'Puck'): ?array
+    public static function generateAudioResponseWithElevenLabs(string $elApiKey, string $text, string $voiceId): ?array
     {
+        $url = 'https://api.elevenlabs.io/v1/text-to-speech/' . $voiceId;
+        
+        $payload = json_encode([
+            'text' => $text,
+            'model_id' => 'eleven_multilingual_v2',
+            'voice_settings' => [
+                'stability' => 0.5,
+                'similarity_boost' => 0.8
+            ]
+        ]);
+
+        $ch = curl_init($url);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_POST, true);
+        curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
+        curl_setopt($ch, CURLOPT_HTTPHEADER, [
+            'Content-Type: application/json',
+            'xi-api-key: ' . $elApiKey
+        ]);
+        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
+
+        $response = curl_exec($ch);
+        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
+
+        if ($httpCode === 200) {
+            return [
+                'audio' => base64_encode($response),
+                'mimeType' => 'audio/mpeg'
+            ];
+        } else {
+            error_log("[ElevenLabs API Error] HTTP " . $httpCode . " | Response: " . $response);
+            return null;
+        }
+    }
+
+    /**
+     * Call Gemini API or ElevenLabs to generate a native audio (speech) response from text
+     */
+    public static function generateAudioResponse(
+        string $apiKey,
+        string $systemPrompt,
+        string $userMessage,
+        string $voiceName = 'Puck',
+        ?string $elApiKey = null,
+        ?string $elVoiceId = null
+    ): ?array {
+        // Use ElevenLabs if the API Key is provided
+        if (!empty($elApiKey)) {
+            $voiceId = !empty($elVoiceId) ? $elVoiceId : 'pNInz6obpgDQGcFmaJgB'; // Default to Adam
+            $audioData = self::generateAudioResponseWithElevenLabs($elApiKey, $userMessage, $voiceId);
+            if ($audioData) {
+                return $audioData;
+            }
+            error_log("[TTS Service] ElevenLabs failed, falling back to Gemini TTS.");
+        }
+
+        // Gemini Fallback Logic:
         $models = [
             'gemini-3.1-flash-tts-preview',
             'gemini-2.5-flash-preview-tts'
@@ -284,8 +342,15 @@ class GeminiService
     /**
      * Call Gemini API with audio inline data to generate a native audio response
      */
-    public static function generateAudioResponseFromAudio(string $apiKey, string $systemPrompt, string $audioBase64, string $mimeType, string $voiceName = 'Puck'): ?array
-    {
+    public static function generateAudioResponseFromAudio(
+        string $apiKey,
+        string $systemPrompt,
+        string $audioBase64,
+        string $mimeType,
+        string $voiceName = 'Puck',
+        ?string $elApiKey = null,
+        ?string $elVoiceId = null
+    ): ?array {
         // Step 1: Use gemini-flash-lite-latest (which supports audio input) to understand the audio message and generate a text reply
         $replyText = self::generateResponseFromAudio($apiKey, $systemPrompt, $audioBase64, $mimeType);
         if (empty($replyText)) {
@@ -293,7 +358,7 @@ class GeminiService
             return null;
         }
 
-        // Step 2: Use gemini-3.1-flash-tts-preview to convert the text response into a native audio voice note
-        return self::generateAudioResponse($apiKey, $systemPrompt, $replyText, $voiceName);
+        // Step 2: Use ElevenLabs or Gemini TTS to convert the text response into a native audio voice note
+        return self::generateAudioResponse($apiKey, $systemPrompt, $replyText, $voiceName, $elApiKey, $elVoiceId);
     }
 }