diff --git a/litellm/constants.py b/litellm/constants.py
index e40f1a5da2d..c0ce0f265b5 100644
--- a/litellm/constants.py
+++ b/litellm/constants.py
@@ -15,7 +15,7 @@ DEFAULT_SQS_FLUSH_INTERVAL_SECONDS = int(
     os.getenv("DEFAULT_SQS_FLUSH_INTERVAL_SECONDS", 10)
 )
 DEFAULT_NUM_WORKERS_LITELLM_PROXY = int(
-    os.getenv("DEFAULT_NUM_WORKERS_LITELLM_PROXY", 4)
+    os.getenv("DEFAULT_NUM_WORKERS_LITELLM_PROXY", 1)
 )
 DEFAULT_SQS_BATCH_SIZE = int(os.getenv("DEFAULT_SQS_BATCH_SIZE", 512))
 SQS_SEND_MESSAGE_ACTION = "SendMessage"
diff --git a/litellm/proxy/spend_tracking/spend_management_endpoints.py b/litellm/proxy/spend_tracking/spend_management_endpoints.py
index e7d28bc317f..16985d76b33 100644
--- a/litellm/proxy/spend_tracking/spend_management_endpoints.py
+++ b/litellm/proxy/spend_tracking/spend_management_endpoints.py
@@ -10,7 +10,6 @@ from fastapi import APIRouter, Depends, HTTPException, status
 
 import litellm
 from litellm._logging import verbose_proxy_logger
-from litellm.router_strategy.budget_limiter import RouterBudgetLimiting
 from litellm.proxy._types import *
 from litellm.proxy._types import ProviderBudgetResponse, ProviderBudgetResponseObject
 from litellm.proxy.auth.user_api_key_auth import user_api_key_auth
@@ -18,6 +17,7 @@ from litellm.proxy.spend_tracking.spend_tracking_utils import (
     get_spend_by_team_and_customer,
 )
 from litellm.proxy.utils import handle_exception_on_proxy
+from litellm.router_strategy.budget_limiter import RouterBudgetLimiting
 
 if TYPE_CHECKING:
     from litellm.proxy.proxy_server import PrismaClient
@@ -1663,6 +1663,9 @@ async def ui_view_spend_logs(  # noqa: PLR0915
     key_alias: Optional[str] = fastapi.Query(
         default=None, description="Filter logs by key alias"
     ),
+    end_user: Optional[str] = fastapi.Query(
+        default=None, description="Filter logs by end user"
+    ),
 ):
     """
     View spend logs for UI with pagination support
@@ -1730,13 +1733,16 @@ async def ui_view_spend_logs(  # noqa: PLR0915
 
         if model is not None:
             where_conditions["model"] = model
-        
+
         if key_alias is not None:
             where_conditions["metadata"] = {
                 "path": ["user_api_key_alias"],
-                "string_contains": key_alias
+                "string_contains": key_alias,
             }
 
+        if end_user is not None:
+            where_conditions["end_user"] = end_user
+
         if min_spend is not None or max_spend is not None:
             where_conditions["spend"] = {}
             if min_spend is not None: