diff --git a/backend/python/app/api/admin/models.py b/backend/python/app/api/admin/models.py
index 4537c09..5e1b7f3 100644
--- a/backend/python/app/api/admin/models.py
+++ b/backend/python/app/api/admin/models.py
@@ -8,6 +8,7 @@ from typing import List, Optional
 from pydantic import BaseModel
 from ...database import get_db, SessionLocal
 from ...models import AIModel, ModelProvider, SiteSetting
+from ...models.litellm_sync import sync_create_model, sync_update_model, sync_delete_model, sync_health_check
 from ...auth import get_current_admin
 from ...middleware.log_service import LogService
 from ...capability_registry import (
@@ -475,6 +476,21 @@ async def create_model(
     db.add(model)
     db.commit()
 
+    # #965: LiteLLM model sync
+    import threading
+    def _sync_create():
+        try:
+            from ...models.litellm_sync import sync_create_model
+            litellm_model = "openai/" + data.name
+            api_base = provider.api_base_url if provider else data.endpoint or ""
+            api_key = data.api_key or (provider.api_key if provider else "") or ""
+            if api_base:
+                sync_create_model(data.name, litellm_model, api_base.rstrip("/"), api_key)
+        except Exception as e:
+            import logging
+            logging.getLogger("aiflow").warning(f"[litellm-sync] create failed: {e}")
+    threading.Thread(target=_sync_create, daemon=True).start()
+
     LogService.log_audit(
         admin_id=admin_user.id,
         admin_name=admin_user.username,
@@ -588,6 +604,24 @@ async def update_model(
     model.updated_at = datetime.now()
     db.commit()
 
+    # #965: LiteLLM model sync
+    import threading
+    def _sync_update():
+        try:
+            from ...models.litellm_sync import sync_update_model
+            litellm_model = "openai/" + (data.name if data.name else model.name)
+            provider = db.query(ModelProvider).filter(ModelProvider.id == model.provider_id).first()
+            api_base = provider.api_base_url if provider else model.endpoint or ""
+            api_key = data.api_key if data.api_key else (provider.api_key if provider else "") or ""
+            old_name = model.name
+            new_name = data.name if data.name else old_name
+            if api_base:
+                sync_update_model(old_name, new_name, litellm_model, api_base.rstrip("/"), api_key)
+        except Exception as e:
+            import logging
+            logging.getLogger("aiflow").warning(f"[litellm-sync] update failed: {e}")
+    threading.Thread(target=_sync_update, daemon=True).start()
+
     LogService.log_audit(
         admin_id=admin_user.id,
         admin_name=admin_user.username,
@@ -612,6 +646,16 @@ async def delete_model(
         raise HTTPException(status_code=404, detail="模型不存在")
 
     model_name = model.name
+    # #965: 同步删除到 LiteLLM（异步）
+    delete_model_name = model.name
+    import threading
+    def _sync_delete():
+        try:
+            sync_delete_model(delete_model_name)
+        except Exception as e:
+            logging.getLogger("aiflow").warning(f"[litellm-sync] delete failed for {delete_model_name}: {e}")
+    threading.Thread(target=_sync_delete, daemon=True).start()
+
     db.delete(model)
     db.commit()
 
diff --git a/backend/python/app/core/litellm_sync.py b/backend/python/app/core/litellm_sync.py
new file mode 100644
index 0000000..e29e8f0
--- /dev/null
+++ b/backend/python/app/core/litellm_sync.py
@@ -0,0 +1,37 @@
+import logging, os, httpx
+logger = logging.getLogger(__name__)
+LITM = os.getenv("LITELLM_HOST", "qihu-aiflow-litellm")
+LITP = os.getenv("LITELLM_PORT", "4000")
+LITK = os.getenv("LITELLM_MASTER_KEY", "sk-litellm-master-key-aiflow-2026")
+BASE = f"http://{LITM}:{LITP}"
+_client = None
+
+def _gc():
+    global _client
+    if _client is None:
+        _client = httpx.Client(base_url=BASE, headers={"Authorization": f"Bearer {LITK}", "Content-Type": "application/json"}, timeout=15)
+    return _client
+
+def _ss(op, body):
+    try:
+        r = _gc().post(op, json=body)
+        if r.status_code in (200,201):
+            logger.info(f"[litellm-sync] {op} OK")
+            return True
+        logger.warning(f"[litellm-sync] {op} FAIL {r.status_code}")
+        return False
+    except Exception as e:
+        logger.error(f"[litellm-sync] {op} ERR {e}")
+        return False
+
+def sync_create_model(model_name, litellm_model, api_base, api_key):
+    return _ss("/model/new", {"model_name":model_name, "litellm_params":{"model":litellm_model, "api_base":api_base, "api_key":api_key}})
+
+def sync_update_model(old_name, new_name, litellm_model, api_base, api_key):
+    if old_name != new_name:
+        _ss("/model/delete", {"id":old_name})
+        return sync_create_model(new_name, litellm_model, api_base, api_key)
+    return _ss("/model/update", {"model_name":new_name, "litellm_params":{"model":litellm_model, "api_base":api_base, "api_key":api_key}})
+
+def sync_delete_model(model_name):
+    return _ss("/model/delete", {"id":model_name})