diff --git a/app/src/main/java/com/bibliadiaria/app/MainActivity.java b/app/src/main/java/com/bibliadiaria/app/MainActivity.java
index 369c881..3a4b78a 100644
--- a/app/src/main/java/com/bibliadiaria/app/MainActivity.java
+++ b/app/src/main/java/com/bibliadiaria/app/MainActivity.java
@@ -86,8 +86,9 @@ public class MainActivity extends Activity {
     private static final int RANK_FEAST = 2;
     private static final int RANK_SOLEMNITY = 3;
 
-    private static final String TTS_SPEECH_URL = "https://ttsapi.host2.gleeze.com/v1/audio/speech";
-    private static final String TTS_MODEL = "kokoro";
+    private static final String TTS_SPEECH_URL_GLEEZE = "https://ttsapi.host2.gleeze.com/v1/audio/speech";
+    private static final String TTS_MODEL_GLEEZE = "kokoro";
+    private static final String TTS_SPEECH_URL_MISTRAL = "https://api.mistral.ai/v1/text-to-speech";
     private static final String READING_CACHE_DIR = "reading-cache";
     private static final String PREFETCH_MONTH_PREFIX = "prefetch_month_";
     private static final int NEXT_MONTH_PREFETCH_DAY = 26;
@@ -1490,7 +1491,16 @@ public class MainActivity extends Activity {
     }
 
     private File downloadTtsAudio(String text) throws Exception {
-        HttpURLConnection connection = (HttpURLConnection) new URL(TTS_SPEECH_URL).openConnection();
+        String provider = UpdateManager.getTtsProvider(this);
+        if (provider.equals(UpdateManager.TTS_PROVIDER_MISTRAL)) {
+            return downloadMistralTtsAudio(text);
+        } else {
+            return downloadGleezTtsAudio(text);
+        }
+    }
+
+    private File downloadGleezTtsAudio(String text) throws Exception {
+        HttpURLConnection connection = (HttpURLConnection) new URL(TTS_SPEECH_URL_GLEEZE).openConnection();
         connection.setConnectTimeout(15000);
         connection.setReadTimeout(120000);
         connection.setRequestMethod("POST");
@@ -1500,8 +1510,8 @@ public class MainActivity extends Activity {
         connection.setRequestProperty("Content-Type", "application/json; charset=utf-8");
 
         JSONObject body = new JSONObject();
-        body.put("model", TTS_MODEL);
-        body.put("voice", UpdateManager.getTtsVoice(this, isEnglish));
+        body.put("model", TTS_MODEL_GLEEZE);
+        body.put("voice", UpdateManager.getTtsVoice(this, isEnglish, UpdateManager.TTS_PROVIDER_GLEEZE));
         body.put("input", text);
         body.put("response_format", "mp3");
         body.put("speed", 1.0);
@@ -1539,6 +1549,59 @@ public class MainActivity extends Activity {
         return outputFile;
     }
 
+    private File downloadMistralTtsAudio(String text) throws Exception {
+        String apiKey = UpdateManager.getMistralApiKey(this);
+        if (apiKey == null || apiKey.trim().isEmpty()) {
+            throw new IOException(isEnglish ? "Mistral API key is not configured. Please set it in Settings." : "La clave API de Mistral no está configurada. Configúrela en Ajustes.");
+        }
+
+        HttpURLConnection connection = (HttpURLConnection) new URL(TTS_SPEECH_URL_MISTRAL).openConnection();
+        connection.setConnectTimeout(15000);
+        connection.setReadTimeout(120000);
+        connection.setRequestMethod("POST");
+        connection.setDoOutput(true);
+        connection.setRequestProperty("User-Agent", "BibliaDiaria/1.0 Android");
+        connection.setRequestProperty("Accept", "audio/mpeg");
+        connection.setRequestProperty("Content-Type", "application/json; charset=utf-8");
+        connection.setRequestProperty("Authorization", "Bearer " + apiKey);
+
+        JSONObject body = new JSONObject();
+        body.put("text", text);
+        body.put("voice", UpdateManager.getTtsVoice(this, isEnglish, UpdateManager.TTS_PROVIDER_MISTRAL));
+
+        byte[] payload = body.toString().getBytes(StandardCharsets.UTF_8);
+        connection.setFixedLengthStreamingMode(payload.length);
+        try (OutputStream stream = connection.getOutputStream()) {
+            stream.write(payload);
+        }
+
+        int responseCode = connection.getResponseCode();
+        if (responseCode < 200 || responseCode >= 300) {
+            String details = "";
+            InputStream errorStream = connection.getErrorStream();
+            if (errorStream != null) {
+                details = readStream(errorStream);
+            }
+            connection.disconnect();
+            throw new IOException((isEnglish ? "Mistral TTS API responded with code " : "La API TTS de Mistral respondió con código ")
+                    + responseCode
+                    + (details.isEmpty() ? "." : ". " + details));
+        }
+
+        File outputFile = File.createTempFile("daily-reading-tts-", ".mp3", getCacheDir());
+        try (InputStream input = connection.getInputStream();
+             FileOutputStream output = new FileOutputStream(outputFile)) {
+            byte[] buffer = new byte[8192];
+            int read;
+            while ((read = input.read(buffer)) != -1) {
+                output.write(buffer, 0, read);
+            }
+        } finally {
+            connection.disconnect();
+        }
+        return outputFile;
+    }
+
     private void showTtsAudioReady(File audioFile) {
         try {
             releaseTtsPlayer();
diff --git a/app/src/main/java/com/bibliadiaria/app/SettingsActivity.java b/app/src/main/java/com/bibliadiaria/app/SettingsActivity.java
index fbf97be..2c0d241 100644
--- a/app/src/main/java/com/bibliadiaria/app/SettingsActivity.java
+++ b/app/src/main/java/com/bibliadiaria/app/SettingsActivity.java
@@ -7,9 +7,11 @@ import android.graphics.Typeface;
 import android.graphics.drawable.GradientDrawable;
 import android.os.Build;
 import android.os.Bundle;
+import android.text.InputType;
 import android.view.Gravity;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.EditText;
 import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 import android.widget.ScrollView;
@@ -45,6 +47,8 @@ public class SettingsActivity extends Activity {
     private TextView downloadButton;
     private TextView voiceSubtitleText;
     private TextView voiceButton;
+    private TextView ttsProviderButton;
+    private TextView mistralApiKeyButton;
     private UpdateManager.UpdateInfo latestInfo;
     private boolean isEnglish;
 
@@ -100,7 +104,9 @@ public class SettingsActivity extends Activity {
         content.addView(title, titleParams);
 
         content.addView(createLanguageCard());
+        content.addView(createTtsProviderCard());
         content.addView(createVoiceCard());
+        content.addView(createMistralApiKeyCard());
         content.addView(createVersionCard());
 
         checkButton = actionButton(isEnglish ? "Check now" : "Comprobar", COLOR_ACCENT, Color.WHITE);
@@ -200,6 +206,8 @@ public class SettingsActivity extends Activity {
             boolean current = UpdateManager.isEnglish(this);
             UpdateManager.setEnglish(this, !current);
             langToggle.setText(!current ? "English" : "Español");
+            isEnglish = !current;
+            recreate();
             updateVoiceCard();
         });
         card.addView(langToggle, new LinearLayout.LayoutParams(dp(100), dp(40)));
@@ -207,6 +215,39 @@ public class SettingsActivity extends Activity {
         return card;
     }
 
+    private View createTtsProviderCard() {
+        LinearLayout card = createCard();
+        card.setOrientation(LinearLayout.HORIZONTAL);
+        card.setGravity(Gravity.CENTER_VERTICAL);
+
+        LinearLayout copy = new LinearLayout(this);
+        copy.setOrientation(LinearLayout.VERTICAL);
+
+        TextView title = textView("TTS Provider", 20, ink(), Typeface.BOLD);
+        title.setIncludeFontPadding(false);
+        copy.addView(title);
+
+        TextView subtitle = textView("Choose between Gleez and Mistral TTS", 14, muted(), Typeface.NORMAL);
+        LinearLayout.LayoutParams subtitleParams = new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT
+        );
+        subtitleParams.setMargins(0, dp(6), 0, 0);
+        copy.addView(subtitle, subtitleParams);
+
+        card.addView(copy, new LinearLayout.LayoutParams(
+                0,
+                ViewGroup.LayoutParams.WRAP_CONTENT,
+                1f
+        ));
+
+        ttsProviderButton = actionButton(getTtsProviderLabel(), COLOR_ACCENT, Color.WHITE);
+        ttsProviderButton.setOnClickListener(view -> showTtsProviderPicker());
+        card.addView(ttsProviderButton, new LinearLayout.LayoutParams(dp(140), dp(40)));
+
+        return card;
+    }
+
     private View createVoiceCard() {
         LinearLayout card = createCard();
         card.setOrientation(LinearLayout.VERTICAL);
@@ -244,6 +285,42 @@ public class SettingsActivity extends Activity {
         return card;
     }
 
+    private View createMistralApiKeyCard() {
+        LinearLayout card = createCard();
+        card.setOrientation(LinearLayout.VERTICAL);
+
+        LinearLayout copy = new LinearLayout(this);
+        copy.setOrientation(LinearLayout.VERTICAL);
+
+        TextView title = textView("Mistral API Key", 20, ink(), Typeface.BOLD);
+        title.setIncludeFontPadding(false);
+        copy.addView(title);
+
+        TextView subtitle = textView("Required for Mistral TTS (get from mistral.ai)", 14, muted(), Typeface.NORMAL);
+        LinearLayout.LayoutParams subtitleParams = new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT
+        );
+        subtitleParams.setMargins(0, dp(6), 0, 0);
+        copy.addView(subtitle, subtitleParams);
+
+        card.addView(copy, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT
+        ));
+
+        mistralApiKeyButton = actionButton(getMistralApiKeyLabel(), COLOR_ACCENT, Color.WHITE);
+        mistralApiKeyButton.setOnClickListener(view -> showMistralApiKeyDialog());
+        LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                dp(42)
+        );
+        buttonParams.setMargins(0, dp(12), 0, 0);
+        card.addView(mistralApiKeyButton, buttonParams);
+
+        return card;
+    }
+
     private View createVersionCard() {
         LinearLayout card = createCard();
         card.setOrientation(LinearLayout.VERTICAL);
@@ -319,7 +396,8 @@ public class SettingsActivity extends Activity {
 
     private void showVoicePicker() {
         boolean english = UpdateManager.isEnglish(this);
-        UpdateManager.VoiceOption[] options = UpdateManager.getTtsVoiceOptions(english);
+        String provider = UpdateManager.getTtsProvider(this);
+        UpdateManager.VoiceOption[] options = UpdateManager.getTtsVoiceOptions(english, provider);
         String[] labels = new String[options.length];
         for (int index = 0; index < options.length; index++) {
             labels[index] = options[index].label;
@@ -327,13 +405,14 @@ public class SettingsActivity extends Activity {
 
         int selectedIndex = UpdateManager.getTtsVoiceIndex(
                 english,
-                UpdateManager.getTtsVoice(this, english)
+                provider,
+                UpdateManager.getTtsVoice(this, english, provider)
         );
 
         new AlertDialog.Builder(this)
                 .setTitle(english ? "English voice" : "Spanish voice")
                 .setSingleChoiceItems(labels, selectedIndex, (dialog, which) -> {
-                    UpdateManager.setTtsVoice(this, english, options[which].id);
+                    UpdateManager.setTtsVoice(this, english, provider, options[which].id);
                     updateVoiceCard();
                     dialog.dismiss();
                 })
@@ -341,17 +420,94 @@ public class SettingsActivity extends Activity {
                 .show();
     }
 
+    private void showTtsProviderPicker() {
+        String[] providers = {"Gleez", "Mistral"};
+        String currentProvider = UpdateManager.getTtsProvider(this);
+        int selectedIndex = currentProvider.equals(UpdateManager.TTS_PROVIDER_MISTRAL) ? 1 : 0;
+
+        new AlertDialog.Builder(this)
+                .setTitle("Select TTS Provider")
+                .setSingleChoiceItems(providers, selectedIndex, (dialog, which) -> {
+                    String provider = which == 1 ? UpdateManager.TTS_PROVIDER_MISTRAL : UpdateManager.TTS_PROVIDER_GLEEZE;
+                    UpdateManager.setTtsProvider(this, provider);
+                    ttsProviderButton.setText(getTtsProviderLabel());
+                    updateVoiceCard();
+                    dialog.dismiss();
+                })
+                .setNegativeButton("Cancel", null)
+                .show();
+    }
+
+    private void showMistralApiKeyDialog() {
+        String currentKey = UpdateManager.getMistralApiKey(this);
+        String displayKey = currentKey.isEmpty() ? "" : "••••••••";
+
+        EditText input = new EditText(this);
+        input.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
+        input.setHint("Enter your Mistral API key");
+        input.setText(currentKey);
+        input.setSelection(currentKey.length());
+
+        LinearLayout layout = new LinearLayout(this);
+        layout.setOrientation(LinearLayout.VERTICAL);
+        layout.setPadding(dp(20), dp(20), dp(20), dp(20));
+        layout.addView(input, new LinearLayout.LayoutParams(
+                ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT
+        ));
+
+        new AlertDialog.Builder(this)
+                .setTitle("Mistral API Key")
+                .setView(layout)
+                .setPositiveButton("Save", (dialog, which) -> {
+                    UpdateManager.setMistralApiKey(this, input.getText().toString().trim());
+                    mistralApiKeyButton.setText(getMistralApiKeyLabel());
+                })
+                .setNegativeButton("Cancel", null)
+                .show();
+    }
+
+    private String getTtsProviderLabel() {
+        String provider = UpdateManager.getTtsProvider(this);
+        return provider.equals(UpdateManager.TTS_PROVIDER_MISTRAL) ? "Mistral" : "Gleez";
+    }
+
+    private String getMistralApiKeyLabel() {
+        String apiKey = UpdateManager.getMistralApiKey(this);
+        if (apiKey.isEmpty()) {
+            return "Not configured";
+        }
+        return "••••••••";
+    }
+
     private void updateVoiceCard() {
         if (voiceSubtitleText == null || voiceButton == null) {
             return;
         }
 
         boolean english = UpdateManager.isEnglish(this);
+        String provider = UpdateManager.getTtsProvider(this);
         String voiceId = UpdateManager.getTtsVoice(this, english);
-        voiceSubtitleText.setText(english
-                ? "English voices are shown while English is selected"
-                : "Las voces en español se muestran mientras el español esté seleccionado");
-        voiceButton.setText(UpdateManager.getTtsVoiceLabel(english, voiceId));
+        
+        // Update subtitle based on provider
+        if (provider.equals(UpdateManager.TTS_PROVIDER_MISTRAL)) {
+            voiceSubtitleText.setText(english
+                    ? "Mistral voices (requires API key)"
+                    : "Voces de Mistral (requiere clave API)");
+        } else {
+            voiceSubtitleText.setText(english
+                    ? "Gleez voices are shown while English is selected"
+                    : "Las voces de Gleez se muestran mientras el idioma esta seleccionado");
+        }
+        
+        voiceButton.setText(UpdateManager.getTtsVoiceLabel(english, provider, voiceId));
+        
+        // If Mistral is selected but API key is not configured, show a warning
+        if (provider.equals(UpdateManager.TTS_PROVIDER_MISTRAL) && !UpdateManager.isMistralConfigured(this)) {
+            voiceSubtitleText.setText(english
+                    ? "Mistral voices (requires API key - not configured!)"
+                    : "Voces de Mistral (requiere clave API - ¡no configurada!)");
+        }
     }
 
     private void updateInstalledVersionText() {
diff --git a/app/src/main/java/com/bibliadiaria/app/UpdateManager.java b/app/src/main/java/com/bibliadiaria/app/UpdateManager.java
index 7a651cf..e6145dc 100644
--- a/app/src/main/java/com/bibliadiaria/app/UpdateManager.java
+++ b/app/src/main/java/com/bibliadiaria/app/UpdateManager.java
@@ -29,12 +29,19 @@ final class UpdateManager {
     static final String KEY_TTS_VOICE_SPANISH = "tts_voice_spanish";
     static final String DEFAULT_TTS_VOICE_ENGLISH = "af_heart";
     static final String DEFAULT_TTS_VOICE_SPANISH = "ef_dora";
+    static final String DEFAULT_TTS_VOICE_ENGLISH_MISTRAL = "v2/en_us-florence";
+    static final String DEFAULT_TTS_VOICE_SPANISH_MISTRAL = "v2/es_es-carlota";
+    static final String KEY_TTS_PROVIDER = "tts_provider";
+    static final String KEY_MISTRAL_API_KEY = "mistral_api_key";
+    static final String TTS_PROVIDER_GLEEZE = "gleeze";
+    static final String TTS_PROVIDER_MISTRAL = "mistral";
+    static final String MISTRAL_TTS_URL = "https://api.mistral.ai/v1/text-to-speech";
     static final String LATEST_JSON_URL =
             "https://github.com/jahruz67/Bible-Daily/releases/download/latest/latest.json";
     static final String APK_URL =
             "https://github.com/jahruz67/Bible-Daily/releases/download/latest/app-debug.apk";
 
-    private static final VoiceOption[] ENGLISH_VOICES = {
+    private static final VoiceOption[] ENGLISH_VOICES_GLEEZE = {
             new VoiceOption("af_heart", "Heart (US female)"),
             new VoiceOption("af_alloy", "Alloy (US female)"),
             new VoiceOption("af_aoede", "Aoede (US female)"),
@@ -65,12 +72,27 @@ final class UpdateManager {
             new VoiceOption("bm_lewis", "Lewis (UK male)")
     };
 
-    private static final VoiceOption[] SPANISH_VOICES = {
+    private static final VoiceOption[] ENGLISH_VOICES_MISTRAL = {
+            new VoiceOption("v2/en_us-florence", "Florence (US female)"),
+            new VoiceOption("v2/en_us-dave", "Dave (US male)"),
+            new VoiceOption("v2/en_us-libby", "Libby (US female)"),
+            new VoiceOption("v2/en_us-matt", "Matt (US male)"),
+            new VoiceOption("v2/en_us-serena", "Serena (US female)"),
+            new VoiceOption("v2/en_us-andrew", "Andrew (US male)")
+    };
+
+    private static final VoiceOption[] SPANISH_VOICES_GLEEZE = {
             new VoiceOption("ef_dora", "Dora (Spanish female)"),
             new VoiceOption("em_alex", "Alex (Spanish male)"),
             new VoiceOption("em_santa", "Santa (Spanish male)")
     };
 
+    private static final VoiceOption[] SPANISH_VOICES_MISTRAL = {
+            new VoiceOption("v2/es_es-alvaro", "Alvaro (Spanish male)"),
+            new VoiceOption("v2/es_es-carlota", "Carlota (Spanish female)"),
+            new VoiceOption("v2/es_es-gerardo", "Gerardo (Spanish male)")
+    };
+
     private UpdateManager() {
     }
 
@@ -98,35 +120,76 @@ final class UpdateManager {
         preferences(context).edit().putBoolean(KEY_DARK_MODE, enabled).apply();
     }
 
-    static VoiceOption[] getTtsVoiceOptions(boolean isEnglish) {
-        return isEnglish ? ENGLISH_VOICES : SPANISH_VOICES;
+    static VoiceOption[] getTtsVoiceOptions(boolean isEnglish, String provider) {
+        if (provider == null || provider.equals(TTS_PROVIDER_GLEEZE)) {
+            return isEnglish ? ENGLISH_VOICES_GLEEZE : SPANISH_VOICES_GLEEZE;
+        } else {
+            return isEnglish ? ENGLISH_VOICES_MISTRAL : SPANISH_VOICES_MISTRAL;
+        }
     }
 
-    static String getTtsVoice(Context context, boolean isEnglish) {
-        String defaultVoice = getDefaultTtsVoice(isEnglish);
-        String voice = preferences(context).getString(getTtsVoiceKey(isEnglish), defaultVoice);
-        if (isValidTtsVoice(isEnglish, voice)) {
+    static VoiceOption[] getTtsVoiceOptions(boolean isEnglish) {
+        return getTtsVoiceOptions(isEnglish, TTS_PROVIDER_GLEEZE);
+    }
+
+    static String getTtsVoice(Context context, boolean isEnglish, String provider) {
+        String defaultVoice = getDefaultTtsVoice(isEnglish, provider);
+        String voice = preferences(context).getString(getTtsVoiceKey(isEnglish, provider), defaultVoice);
+        if (isValidTtsVoice(isEnglish, provider, voice)) {
             return voice;
         }
         return defaultVoice;
     }
 
-    static void setTtsVoice(Context context, boolean isEnglish, String voiceId) {
-        String voice = isValidTtsVoice(isEnglish, voiceId) ? voiceId : getDefaultTtsVoice(isEnglish);
-        preferences(context).edit().putString(getTtsVoiceKey(isEnglish), voice).apply();
+    static String getTtsVoice(Context context, boolean isEnglish) {
+        return getTtsVoice(context, isEnglish, TTS_PROVIDER_GLEEZE);
     }
 
-    static String getTtsVoiceLabel(boolean isEnglish, String voiceId) {
-        for (VoiceOption option : getTtsVoiceOptions(isEnglish)) {
+    static void setTtsVoice(Context context, boolean isEnglish, String provider, String voiceId) {
+        String voice = isValidTtsVoice(isEnglish, provider, voiceId) ? voiceId : getDefaultTtsVoice(isEnglish, provider);
+        preferences(context).edit().putString(getTtsVoiceKey(isEnglish, provider), voice).apply();
+    }
+
+    static void setTtsVoice(Context context, boolean isEnglish, String voiceId) {
+        setTtsVoice(context, isEnglish, TTS_PROVIDER_GLEEZE, voiceId);
+    }
+
+    static String getTtsProvider(Context context) {
+        return preferences(context).getString(KEY_TTS_PROVIDER, TTS_PROVIDER_GLEEZE);
+    }
+
+    static void setTtsProvider(Context context, String provider) {
+        preferences(context).edit().putString(KEY_TTS_PROVIDER, provider).apply();
+    }
+
+    static String getMistralApiKey(Context context) {
+        return preferences(context).getString(KEY_MISTRAL_API_KEY, "");
+    }
+
+    static void setMistralApiKey(Context context, String apiKey) {
+        preferences(context).edit().putString(KEY_MISTRAL_API_KEY, apiKey).apply();
+    }
+
+    static boolean isMistralConfigured(Context context) {
+        String apiKey = getMistralApiKey(context);
+        return apiKey != null && !apiKey.trim().isEmpty();
+    }
+
+    static String getTtsVoiceLabel(boolean isEnglish, String provider, String voiceId) {
+        for (VoiceOption option : getTtsVoiceOptions(isEnglish, provider)) {
             if (option.id.equals(voiceId)) {
                 return option.label;
             }
         }
-        return getTtsVoiceLabel(isEnglish, getDefaultTtsVoice(isEnglish));
+        return getTtsVoiceLabel(isEnglish, provider, getDefaultTtsVoice(isEnglish));
     }
 
-    static int getTtsVoiceIndex(boolean isEnglish, String voiceId) {
-        VoiceOption[] options = getTtsVoiceOptions(isEnglish);
+    static String getTtsVoiceLabel(boolean isEnglish, String voiceId) {
+        return getTtsVoiceLabel(isEnglish, TTS_PROVIDER_GLEEZE, voiceId);
+    }
+
+    static int getTtsVoiceIndex(boolean isEnglish, String provider, String voiceId) {
+        VoiceOption[] options = getTtsVoiceOptions(isEnglish, provider);
         for (int index = 0; index < options.length; index++) {
             if (options[index].id.equals(voiceId)) {
                 return index;
@@ -135,19 +198,39 @@ final class UpdateManager {
         return 0;
     }
 
+    static int getTtsVoiceIndex(boolean isEnglish, String voiceId) {
+        return getTtsVoiceIndex(isEnglish, TTS_PROVIDER_GLEEZE, voiceId);
+    }
+
+    private static String getDefaultTtsVoice(boolean isEnglish, String provider) {
+        if (provider == null || provider.equals(TTS_PROVIDER_GLEEZE)) {
+            return isEnglish ? DEFAULT_TTS_VOICE_ENGLISH : DEFAULT_TTS_VOICE_SPANISH;
+        } else {
+            return isEnglish ? DEFAULT_TTS_VOICE_ENGLISH_MISTRAL : DEFAULT_TTS_VOICE_SPANISH_MISTRAL;
+        }
+    }
+
     private static String getDefaultTtsVoice(boolean isEnglish) {
-        return isEnglish ? DEFAULT_TTS_VOICE_ENGLISH : DEFAULT_TTS_VOICE_SPANISH;
+        return getDefaultTtsVoice(isEnglish, TTS_PROVIDER_GLEEZE);
+    }
+
+    private static String getTtsVoiceKey(boolean isEnglish, String provider) {
+        if (provider == null || provider.equals(TTS_PROVIDER_GLEEZE)) {
+            return isEnglish ? KEY_TTS_VOICE_ENGLISH : KEY_TTS_VOICE_SPANISH;
+        } else {
+            return isEnglish ? KEY_TTS_VOICE_ENGLISH + "_mistral" : KEY_TTS_VOICE_SPANISH + "_mistral";
+        }
     }
 
     private static String getTtsVoiceKey(boolean isEnglish) {
-        return isEnglish ? KEY_TTS_VOICE_ENGLISH : KEY_TTS_VOICE_SPANISH;
+        return getTtsVoiceKey(isEnglish, TTS_PROVIDER_GLEEZE);
     }
 
-    private static boolean isValidTtsVoice(boolean isEnglish, String voiceId) {
+    private static boolean isValidTtsVoice(boolean isEnglish, String provider, String voiceId) {
         if (voiceId == null) {
             return false;
         }
-        for (VoiceOption option : getTtsVoiceOptions(isEnglish)) {
+        for (VoiceOption option : getTtsVoiceOptions(isEnglish, provider)) {
             if (option.id.equals(voiceId)) {
                 return true;
             }
@@ -155,6 +238,10 @@ final class UpdateManager {
         return false;
     }
 
+    private static boolean isValidTtsVoice(boolean isEnglish, String voiceId) {
+        return isValidTtsVoice(isEnglish, TTS_PROVIDER_GLEEZE, voiceId);
+    }
+
     static UpdateInfo fetchLatestUpdate(Context context) throws Exception {
         String jsonText = download(LATEST_JSON_URL, "application/json");
         JSONObject json = new JSONObject(jsonText);