diff --git a/litellm/utils.py b/litellm/utils.py
index 88b85feff..f82ae1e44 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -19,7 +19,7 @@ from functools import wraps, lru_cache
 import datetime, time
 import tiktoken
 import uuid
-from pydantic import ConfigDict, BaseModel, VERSION
+from pydantic import BaseModel
 import aiohttp
 import textwrap
 import logging
@@ -185,23 +185,6 @@ last_fetched_at_keys = None
 # }
 
 
-# Function to get Pydantic version
-def is_pydantic_v2() -> int:
-    return int(VERSION.split(".")[0])
-
-
-def get_model_config(arbitrary_types_allowed: bool = False) -> ConfigDict:
-    # Version-specific configuration
-    if is_pydantic_v2() >= 2:
-        model_config = ConfigDict(extra="allow", arbitrary_types_allowed=arbitrary_types_allowed, protected_namespaces=())  # type: ignore
-    else:
-        from pydantic import Extra
-
-        model_config = ConfigDict(extra=Extra.allow, arbitrary_types_allowed=arbitrary_types_allowed)  # type: ignore
-
-    return model_config
-
-
 class UnsupportedParamsError(Exception):
     def __init__(self, status_code, message):
         self.status_code = status_code
@@ -348,7 +331,10 @@ class HiddenParams(OpenAIObject):
     original_response: Optional[str] = None
     model_id: Optional[str] = None  # used in Router for individual deployments
     api_base: Optional[str] = None  # returns api base used for making completion call
-    model_config = get_model_config()
+
+    class Config:
+        extra = "allow"
+        protected_namespaces = ()
 
     def get(self, key, default=None):
         # Custom .get() method to access attributes with a default value if the attribute doesn't exist