diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 1bdb5edba3..19e68965f9 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -2790,6 +2790,11 @@ class ProxyConfig:
             model.model_info["id"] = _id
             model.model_info["db_model"] = True
 
+        model.model_info["created_at"] = getattr(model, "created_at", None)
+        model.model_info["updated_at"] = getattr(model, "updated_at", None)
+        model.model_info["created_by"] = getattr(model, "created_by", None)
+        model.model_info["updated_by"] = getattr(model, "updated_by", None)
+
         if model.model_info is not None and isinstance(model.model_info, dict):
             if "id" not in model.model_info:
                 model.model_info["id"] = model.model_id
@@ -3075,10 +3080,9 @@ class ProxyConfig:
 
         try:
             if master_key is None or not isinstance(master_key, str):
-                raise Exception(
+                raise ValueError(
                     f"Master key is not initialized or formatted. master_key={master_key}"
                 )
-            verbose_proxy_logger.debug(f"llm_router: {llm_router}")
             new_models = await prisma_client.db.litellm_proxymodeltable.find_many()
             # update llm router
             await self._update_llm_router(
diff --git a/litellm/types/router.py b/litellm/types/router.py
index 93c65a1cf2..75e792f4c9 100644
--- a/litellm/types/router.py
+++ b/litellm/types/router.py
@@ -1,9 +1,15 @@
+"""
+    litellm.Router Types - includes RouterConfig, UpdateRouterConfig, ModelInfo etc
+"""
+
 from typing import List, Optional, Union, Dict, Tuple, Literal, TypedDict
+import uuid
+import enum
 import httpx
-from pydantic import BaseModel, validator, Field
+from pydantic import BaseModel, Field
+import datetime
 from .completion import CompletionRequest
 from .embedding import EmbeddingRequest
-import uuid, enum
 
 
 class ModelConfig(BaseModel):
@@ -76,6 +82,12 @@ class ModelInfo(BaseModel):
     db_model: bool = (
         False  # used for proxy - to separate models which are stored in the db vs. config.
     )
+    updated_at: Optional[datetime.datetime] = None
+    updated_by: Optional[str] = None
+
+    created_at: Optional[datetime.datetime] = None
+    created_by: Optional[str] = None
+
     base_model: Optional[str] = (
         None  # specify if the base model is azure/gpt-3.5-turbo etc for accurate cost tracking
     )