diff --git a/matrix_gpt/api_client_manager.py b/matrix_gpt/api_client_manager.py
index 5edbdef..73f748a 100644
--- a/matrix_gpt/api_client_manager.py
+++ b/matrix_gpt/api_client_manager.py
@@ -16,7 +16,6 @@ Global variable to sync importing and sharing the configured module.
 class ApiClientManager:
     def __init__(self):
         self._openai_api_key = None
-        self._openai_api_base = None
         self._anth_api_key = None
         self.logger = logging.getLogger('MatrixGPT').getChild('ApiClientManager')
 
diff --git a/matrix_gpt/generate_clients/anthropic.py b/matrix_gpt/generate_clients/anthropic.py
index ae35745..9c8a151 100644
--- a/matrix_gpt/generate_clients/anthropic.py
+++ b/matrix_gpt/generate_clients/anthropic.py
@@ -11,10 +11,10 @@ class AnthropicApiClient(ApiClient):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-    def _create_client(self):
+    def _create_client(self, api_base: str = None):
         return AsyncAnthropic(
             api_key=self._api_key,
-            base_url=self._api_base
+            base_url=api_base
         )
 
     def prepare_context(self, context: list, system_prompt: str = None, injected_system_prompt: str = None):
@@ -58,7 +58,7 @@ class AnthropicApiClient(ApiClient):
         })
 
     async def generate(self, command_info: CommandInfo, matrix_gpt_data: str = None):
-        r = await self._create_client().messages.create(
+        r = await self._create_client(command_info.api_base).messages.create(
             model=command_info.model,
             max_tokens=None if command_info.max_tokens == 0 else command_info.max_tokens,
             temperature=command_info.temperature,
diff --git a/matrix_gpt/generate_clients/api_client.py b/matrix_gpt/generate_clients/api_client.py
index 95aef66..50e745b 100644
--- a/matrix_gpt/generate_clients/api_client.py
+++ b/matrix_gpt/generate_clients/api_client.py
@@ -10,12 +10,11 @@ class ApiClient:
     _HUMAN_NAME = 'user'
     _BOT_NAME = 'assistant'
 
-    def __init__(self, api_key: str, client_helper: MatrixClientHelper, room: MatrixRoom, event: Event, api_base: str = None):
+    def __init__(self, api_key: str, client_helper: MatrixClientHelper, room: MatrixRoom, event: Event):
         self._api_key = api_key
         self._client_helper = client_helper
         self._room = room
         self._event = event
-        self._api_base = api_base
         self._context = []
 
     def _create_client(self):
diff --git a/matrix_gpt/generate_clients/openai.py b/matrix_gpt/generate_clients/openai.py
index c0b80c8..55d38a7 100644
--- a/matrix_gpt/generate_clients/openai.py
+++ b/matrix_gpt/generate_clients/openai.py
@@ -12,10 +12,10 @@ class OpenAIClient(ApiClient):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
-    def _create_client(self):
+    def _create_client(self, api_base: str = None):
         return AsyncOpenAI(
             api_key=self._api_key,
-            base_url=self._api_base
+            base_url=api_base
         )
 
     def append_msg(self, content: str, role: str):