diff --git a/src/pipecat/services/openai.py b/src/pipecat/services/openai.py
index 4d3e1d6d7..48b108ad0 100644
--- a/src/pipecat/services/openai.py
+++ b/src/pipecat/services/openai.py
@@ -112,6 +112,7 @@ class BaseOpenAILLMService(LLMService):
         base_url=None,
         organization=None,
         project=None,
+        default_headers: Mapping[str, str] | None = None,
         params: InputParams = InputParams(),
         **kwargs,
     ):
@@ -128,10 +129,10 @@ class BaseOpenAILLMService(LLMService):
         }
         self.set_model_name(model)
         self._client = self.create_client(
-            api_key=api_key, base_url=base_url, organization=organization, project=project, **kwargs
+            api_key=api_key, base_url=base_url, organization=organization, project=project, default_headers=default_headers, **kwargs
         )
 
-    def create_client(self, api_key=None, base_url=None, organization=None, project=None, **kwargs):
+    def create_client(self, api_key=None, base_url=None, organization=None, project=None, default_headers=None, **kwargs):
         return AsyncOpenAI(
             api_key=api_key,
             base_url=base_url,
@@ -142,6 +143,7 @@ class BaseOpenAILLMService(LLMService):
                     max_keepalive_connections=100, max_connections=1000, keepalive_expiry=None
                 )
             ),
+            default_headers=default_headers
         )
 
     def can_generate_metrics(self) -> bool: