diff --git a/src/openai/resources/chat/completions.py b/src/openai/resources/chat/completions.py
index caf712c604..0011d75e6e 100644
--- a/src/openai/resources/chat/completions.py
+++ b/src/openai/resources/chat/completions.py
@@ -68,7 +68,6 @@ def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -123,9 +122,6 @@ def create(
 
               A list of functions the model may generate JSON inputs for.
 
-          instance_id: An unique identifier to a custom instance to execute the request. The requesting
-              organization is required to have access to the instance.
-
           logit_bias: Modify the likelihood of specified tokens appearing in the completion.
 
               Accepts a JSON object that maps tokens (specified by their token ID in the
@@ -263,7 +259,6 @@ def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -324,9 +319,6 @@ def create(
 
               A list of functions the model may generate JSON inputs for.
 
-          instance_id: An unique identifier to a custom instance to execute the request. The requesting
-              organization is required to have access to the instance.
-
           logit_bias: Modify the likelihood of specified tokens appearing in the completion.
 
               Accepts a JSON object that maps tokens (specified by their token ID in the
@@ -457,7 +449,6 @@ def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -518,9 +509,6 @@ def create(
 
               A list of functions the model may generate JSON inputs for.
 
-          instance_id: An unique identifier to a custom instance to execute the request. The requesting
-              organization is required to have access to the instance.
-
           logit_bias: Modify the likelihood of specified tokens appearing in the completion.
 
               Accepts a JSON object that maps tokens (specified by their token ID in the
@@ -650,7 +638,6 @@ def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -682,7 +669,6 @@ def create(
                     "frequency_penalty": frequency_penalty,
                     "function_call": function_call,
                     "functions": functions,
-                    "instance_id": instance_id,
                     "logit_bias": logit_bias,
                     "logprobs": logprobs,
                     "max_tokens": max_tokens,
@@ -749,7 +735,6 @@ async def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -804,9 +789,6 @@ async def create(
 
               A list of functions the model may generate JSON inputs for.
 
-          instance_id: An unique identifier to a custom instance to execute the request. The requesting
-              organization is required to have access to the instance.
-
           logit_bias: Modify the likelihood of specified tokens appearing in the completion.
 
               Accepts a JSON object that maps tokens (specified by their token ID in the
@@ -944,7 +926,6 @@ async def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -1005,9 +986,6 @@ async def create(
 
               A list of functions the model may generate JSON inputs for.
 
-          instance_id: An unique identifier to a custom instance to execute the request. The requesting
-              organization is required to have access to the instance.
-
           logit_bias: Modify the likelihood of specified tokens appearing in the completion.
 
               Accepts a JSON object that maps tokens (specified by their token ID in the
@@ -1138,7 +1116,6 @@ async def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -1199,9 +1176,6 @@ async def create(
 
               A list of functions the model may generate JSON inputs for.
 
-          instance_id: An unique identifier to a custom instance to execute the request. The requesting
-              organization is required to have access to the instance.
-
           logit_bias: Modify the likelihood of specified tokens appearing in the completion.
 
               Accepts a JSON object that maps tokens (specified by their token ID in the
@@ -1331,7 +1305,6 @@ async def create(
         frequency_penalty: Optional[float] | NotGiven = NOT_GIVEN,
         function_call: completion_create_params.FunctionCall | NotGiven = NOT_GIVEN,
         functions: Iterable[completion_create_params.Function] | NotGiven = NOT_GIVEN,
-        instance_id: Optional[str] | NotGiven = NOT_GIVEN,
         logit_bias: Optional[Dict[str, int]] | NotGiven = NOT_GIVEN,
         logprobs: Optional[bool] | NotGiven = NOT_GIVEN,
         max_tokens: Optional[int] | NotGiven = NOT_GIVEN,
@@ -1363,7 +1336,6 @@ async def create(
                     "frequency_penalty": frequency_penalty,
                     "function_call": function_call,
                     "functions": functions,
-                    "instance_id": instance_id,
                     "logit_bias": logit_bias,
                     "logprobs": logprobs,
                     "max_tokens": max_tokens,
diff --git a/src/openai/types/chat/completion_create_params.py b/src/openai/types/chat/completion_create_params.py
index 2c80d84e6a..e02a81bc51 100644
--- a/src/openai/types/chat/completion_create_params.py
+++ b/src/openai/types/chat/completion_create_params.py
@@ -87,12 +87,6 @@ class CompletionCreateParamsBase(TypedDict, total=False):
     A list of functions the model may generate JSON inputs for.
     """
 
-    instance_id: Optional[str]
-    """An unique identifier to a custom instance to execute the request.
-
-    The requesting organization is required to have access to the instance.
-    """
-
     logit_bias: Optional[Dict[str, int]]
     """Modify the likelihood of specified tokens appearing in the completion.
 
diff --git a/tests/api_resources/chat/test_completions.py b/tests/api_resources/chat/test_completions.py
index 856b7dc12c..4fa069ba2e 100644
--- a/tests/api_resources/chat/test_completions.py
+++ b/tests/api_resources/chat/test_completions.py
@@ -50,7 +50,6 @@ def test_method_create_with_all_params_overload_1(self, client: OpenAI) -> None:
                     "parameters": {"foo": "bar"},
                 }
             ],
-            instance_id="string",
             logit_bias={"foo": 0},
             logprobs=True,
             max_tokens=0,
@@ -165,7 +164,6 @@ def test_method_create_with_all_params_overload_2(self, client: OpenAI) -> None:
                     "parameters": {"foo": "bar"},
                 }
             ],
-            instance_id="string",
             logit_bias={"foo": 0},
             logprobs=True,
             max_tokens=0,
@@ -282,7 +280,6 @@ async def test_method_create_with_all_params_overload_1(self, async_client: Asyn
                     "parameters": {"foo": "bar"},
                 }
             ],
-            instance_id="string",
             logit_bias={"foo": 0},
             logprobs=True,
             max_tokens=0,
@@ -397,7 +394,6 @@ async def test_method_create_with_all_params_overload_2(self, async_client: Asyn
                     "parameters": {"foo": "bar"},
                 }
             ],
-            instance_id="string",
             logit_bias={"foo": 0},
             logprobs=True,
             max_tokens=0,