diff --git a/backend/app/ai/providers/alibaba.py b/backend/app/ai/providers/alibaba.py
index 01a3be1..eb475c7 100644
--- a/backend/app/ai/providers/alibaba.py
+++ b/backend/app/ai/providers/alibaba.py
@@ -67,7 +67,7 @@ class AlibabaMTProvider:
             detected = data.get("DetectedLanguage", src)
 
             if translated:
-                logger.info(f"Alibaba MT [{version}] ok: {text[:20]}... -> {translated[:20]}...")
+                logger.info(f"Alibaba MT [{version}] ok: {len(text)} chars translated")
                 return {
                     "translated_text": translated,
                     "provider": f"{self.name}-{version}",
diff --git a/backend/app/ai/providers/nvidia.py b/backend/app/ai/providers/nvidia.py
index 07915f5..9d445da 100644
--- a/backend/app/ai/providers/nvidia.py
+++ b/backend/app/ai/providers/nvidia.py
@@ -45,7 +45,7 @@ class NvidiaProvider(OpenAIProvider):
 
         logger.info(
             f"NVIDIA timing: build_msgs={t1-t0:.1f}s api_call={t2-t1:.1f}s process={t3-t2:.1f}s "
-            f"chars_in={sum(len(m.get('content','')) for m in messages)} chars_out={len(content)}"
+            f"chars_out={len(content)}"
         )
 
         return {"reply": content, "provider": self.name, "model": self.model}
diff --git a/backend/app/services/push.py b/backend/app/services/push.py
index 454867b..5112b76 100644
--- a/backend/app/services/push.py
+++ b/backend/app/services/push.py
@@ -15,7 +15,7 @@ class PushService:
 
     @staticmethod
     def send_notification(user_id: str, title: str, content: str, payload: Optional[Dict[str, Any]] = None) -> bool:
-        logger.info(f"[PUSH] user={user_id} title={title} content={content}")
+        logger.info(f"[PUSH] user={user_id} title={title} content_len={len(content)}")
         try:
             import asyncio
             loop = asyncio.new_event_loop()