diff --git a/litellm/router.py b/litellm/router.py
index f2e42068d..ce66028b5 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -34,6 +34,7 @@ class Router:
                  cache_responses: bool = False,
                  num_retries: Optional[int] = None,
                  timeout: float = 600,
+                 chat_completion_params = {}, # default params for Router.chat.completion.create 
                  routing_strategy: Literal["simple-shuffle", "least-busy"] = "simple-shuffle") -> None:
 
         if model_list:
@@ -42,6 +43,8 @@ class Router:
         
         if num_retries: 
             self.num_retries = num_retries
+        
+        self.chat = litellm.Chat(params=chat_completion_params)
 
         litellm.request_timeout = timeout
         self.routing_strategy = routing_strategy
@@ -65,7 +68,6 @@ class Router:
             litellm.cache = litellm.Cache(**cache_config) # use Redis for caching completion requests
             self.cache_responses = cache_responses
         
-        self.chat = litellm.Chat(params={})
 
 
     def _start_health_check_thread(self):
diff --git a/litellm/tests/test_class.py b/litellm/tests/test_class.py
index 909c8e939..6a814155f 100644
--- a/litellm/tests/test_class.py
+++ b/litellm/tests/test_class.py
@@ -1,26 +1,54 @@
-#### What this tests ####
-#    This tests the LiteLLM Class
+# #### What this tests ####
+# #    This tests the LiteLLM Class
 
-import sys, os
-import traceback
-import pytest
-sys.path.insert(
-    0, os.path.abspath("../..")
-)  # Adds the parent directory to the system path
-import litellm
+# import sys, os
+# import traceback
+# import pytest
+# sys.path.insert(
+#     0, os.path.abspath("../..")
+# )  # Adds the parent directory to the system path
+# import litellm
+# import asyncio 
 
-mr1 = litellm.ModelResponse(stream=True, model="gpt-3.5-turbo")
-mr1.choices[0].finish_reason = "stop"
-mr2 = litellm.ModelResponse(stream=True, model="gpt-3.5-turbo")
-print(mr2.choices[0].finish_reason)
 # litellm.set_verbose = True
 # from litellm import Router
 # import instructor
 # from pydantic import BaseModel
 
 # # This enables response_model keyword
-# # from client.chat.completions.create
-# client = instructor.patch(Router(model_list=[{
+# # # from client.chat.completions.create
+# # client = instructor.patch(Router(model_list=[{
+# #     "model_name": "gpt-3.5-turbo", # openai model name 
+# #     "litellm_params": { # params for litellm completion/embedding call 
+# #         "model": "azure/chatgpt-v-2", 
+# #         "api_key": os.getenv("AZURE_API_KEY"),
+# #         "api_version": os.getenv("AZURE_API_VERSION"),
+# #         "api_base": os.getenv("AZURE_API_BASE")
+# #     }
+# # }]))
+
+# # class UserDetail(BaseModel):
+# #     name: str
+# #     age: int
+
+# # user = client.chat.completions.create(
+# #     model="gpt-3.5-turbo",
+# #     response_model=UserDetail,
+# #     messages=[
+# #         {"role": "user", "content": "Extract Jason is 25 years old"},
+# #     ]
+# # )
+# # assert isinstance(model, UserExtract)
+
+# # assert isinstance(user, UserDetail)
+# # assert user.name == "Jason"
+# # assert user.age == 25
+
+# # print(f"user: {user}")
+# import instructor
+# from openai import AsyncOpenAI
+
+# aclient = instructor.apatch(Router(model_list=[{
 #     "model_name": "gpt-3.5-turbo", # openai model name 
 #     "litellm_params": { # params for litellm completion/embedding call 
 #         "model": "azure/chatgpt-v-2", 
@@ -28,22 +56,19 @@ print(mr2.choices[0].finish_reason)
 #         "api_version": os.getenv("AZURE_API_VERSION"),
 #         "api_base": os.getenv("AZURE_API_BASE")
 #     }
-# }]))
+# }], chat_completion_params={"acompletion": True}))
 
-# class UserDetail(BaseModel):
+# class UserExtract(BaseModel):
 #     name: str
 #     age: int
+# async def main():
+#     model = await aclient.chat.completions.create(
+#         model="gpt-3.5-turbo",
+#         response_model=UserExtract,
+#         messages=[
+#             {"role": "user", "content": "Extract jason is 25 years old"},
+#         ],
+#     )
+#     print(f"model: {model}")
 
-# user = client.chat.completions.create(
-#     model="gpt-3.5-turbo",
-#     response_model=UserDetail,
-#     messages=[
-#         {"role": "user", "content": "Extract Jason is 25 years old"},
-#     ]
-# )
-
-# assert isinstance(user, UserDetail)
-# assert user.name == "Jason"
-# assert user.age == 25
-
-# print(f"user: {user}")
\ No newline at end of file
+# asyncio.run(main())
\ No newline at end of file