diff --git a/api/core/model_runtime/model_providers/azure_openai/llm/llm.py b/api/core/model_runtime/model_providers/azure_openai/llm/llm.py
index c5d7a83a4e..03818741f6 100644
--- a/api/core/model_runtime/model_providers/azure_openai/llm/llm.py
+++ b/api/core/model_runtime/model_providers/azure_openai/llm/llm.py
@@ -113,7 +113,7 @@ class AzureOpenAILargeLanguageModel(_CommonAzureOpenAI, LargeLanguageModel):
         try:
             client = AzureOpenAI(**self._to_credential_kwargs(credentials))
 
-            if "o1" in model:
+            if model.startswith("o1"):
                 client.chat.completions.create(
                     messages=[{"role": "user", "content": "ping"}],
                     model=model,
@@ -311,7 +311,10 @@ class AzureOpenAILargeLanguageModel(_CommonAzureOpenAI, LargeLanguageModel):
         prompt_messages = self._clear_illegal_prompt_messages(model, prompt_messages)
 
         block_as_stream = False
-        if "o1" in model:
+        if model.startswith("o1"):
+            if "max_tokens" in model_parameters:
+                model_parameters["max_completion_tokens"] = model_parameters["max_tokens"]
+                del model_parameters["max_tokens"]
             if stream:
                 block_as_stream = True
                 stream = False
@@ -404,7 +407,7 @@ class AzureOpenAILargeLanguageModel(_CommonAzureOpenAI, LargeLanguageModel):
                                 ]
                             )
 
-        if "o1" in model:
+        if model.startswith("o1"):
             system_message_count = len([m for m in prompt_messages if isinstance(m, SystemPromptMessage)])
             if system_message_count > 0:
                 new_prompt_messages = []