diff --git a/ai-hub/app/api/routes/stt.py b/ai-hub/app/api/routes/stt.py
index 63c8118..a41390a 100644
--- a/ai-hub/app/api/routes/stt.py
+++ b/ai-hub/app/api/routes/stt.py
@@ -46,23 +46,29 @@
             # Read the audio bytes from the uploaded file
             audio_bytes = await audio_file.read()
 
-            provider_override = None
+            # Resolve provider: User Prefs > Global Settings
+            prefs = {}
             if user_id:
                 user = services.user_service.get_user_by_id(db=db, user_id=user_id)
-                prefs = user.preferences.get("stt", {}) if user and user.preferences else {}
-                from app.config import settings
-                active_provider = provider_name or prefs.get("active_provider") or settings.STT_PROVIDER
-                active_prefs = prefs.get("providers", {}).get(active_provider, {})
-                
-                from app.core.providers.factory import get_stt_provider
-                # kwargs extract non-key/model settings (like temperature, etc.)
-                kwargs = {k: v for k, v in active_prefs.items() if k not in ["api_key", "model"]}
-                provider_override = get_stt_provider(
-                    provider_name=active_provider,
-                    api_key=active_prefs.get("api_key"),
-                    model_name=active_prefs.get("model", ""),
-                    **kwargs
-                )
+                if user and user.preferences:
+                    prefs = user.preferences.get("stt", {})
+            
+            from app.config import settings
+            active_provider = provider_name or prefs.get("active_provider") or settings.STT_PROVIDER
+            active_prefs = prefs.get("providers", {}).get(active_provider, {})
+            
+            logger.info(f"Resolving STT. user_id={user_id}, provider={active_provider}")
+            
+            from app.core.providers.factory import get_stt_provider
+            kwargs = {k: v for k, v in active_prefs.items() if k not in ["api_key", "model"]}
+            provider_override = get_stt_provider(
+                provider_name=active_provider,
+                api_key=active_prefs.get("api_key"),
+                model_name=active_prefs.get("model", ""),
+                **kwargs
+            )
+            
+            logger.info(f"Using STT provider: {type(provider_override).__name__}")
             
             # Use the STT service to get the transcript
             transcript = await services.stt_service.transcribe(
diff --git a/ai-hub/app/api/routes/tts.py b/ai-hub/app/api/routes/tts.py
index 9e3d620..c6272f7 100644
--- a/ai-hub/app/api/routes/tts.py
+++ b/ai-hub/app/api/routes/tts.py
@@ -35,22 +35,30 @@
         user_id: str = Depends(get_current_user_id)
     ):
         try:
-            provider_override = None
+            # Resolve provider: User Prefs > Global Settings
+            prefs = {}
             if user_id:
                 user = services.user_service.get_user_by_id(db=db, user_id=user_id)
-                prefs = user.preferences.get("tts", {}) if user and user.preferences else {}
-                from app.config import settings
-                active_provider = provider_name or prefs.get("active_provider") or settings.TTS_PROVIDER
-                active_prefs = prefs.get("providers", {}).get(active_provider, {})
-                from app.core.providers.factory import get_tts_provider
-                kwargs = {k: v for k, v in active_prefs.items() if k not in ["api_key", "model", "voice"]}
-                provider_override = get_tts_provider(
-                    provider_name=active_provider,
-                    api_key=active_prefs.get("api_key"),
-                    model_name=active_prefs.get("model", ""),
-                    voice_name=active_prefs.get("voice", ""),
-                    **kwargs
-                )
+                if user and user.preferences:
+                    prefs = user.preferences.get("tts", {})
+            
+            from app.config import settings
+            active_provider = provider_name or prefs.get("active_provider") or settings.TTS_PROVIDER
+            active_prefs = prefs.get("providers", {}).get(active_provider, {})
+            
+            from app.core.providers.factory import get_tts_provider
+            # kwargs extract non-key/model/voice settings
+            kwargs = {k: v for k, v in active_prefs.items() if k not in ["api_key", "model", "voice"]}
+            
+            provider_override = get_tts_provider(
+                provider_name=active_provider,
+                api_key=active_prefs.get("api_key"),
+                model_name=active_prefs.get("model", ""),
+                voice_name=active_prefs.get("voice", ""),
+                **kwargs
+            )
+            
+            logger.info(f"Using TTS provider: {type(provider_override).__name__} for user={user_id}")
 
             if stream:
                 # Pre-flight: generate first chunk before streaming to catch errors cleanly