diff --git a/generate/image_generation/models/openai.py b/generate/image_generation/models/openai.py
index 7c1dd81..87b7351 100644
--- a/generate/image_generation/models/openai.py
+++ b/generate/image_generation/models/openai.py
@@ -110,7 +110,7 @@ def _get_request_parameters(self, prompt: str, parameters: OpenAIImageGeneration
             **parameters.custom_model_dump(),
         }
         return {
-            'url': self.settings.api_base + 'images/generations',
+            'url': self.settings.api_base + '/images/generations',
             'json': json_data,
             'headers': headers,
         }
diff --git a/generate/text_to_speech/models/openai.py b/generate/text_to_speech/models/openai.py
index 769e3de..6771f24 100644
--- a/generate/text_to_speech/models/openai.py
+++ b/generate/text_to_speech/models/openai.py
@@ -54,7 +54,7 @@ def _get_request_parameters(self, text: str, parameters: OpenAISpeechParameters)
             'Content-Type': 'application/json',
         }
         return {
-            'url': self.settings.api_base + 'audio/speech',
+            'url': self.settings.api_base + '/audio/speech',
             'json': json_data,
             'headers': headers,
         }