diff --git a/api/core/model_runtime/model_providers/azure_openai/_constant.py b/api/core/model_runtime/model_providers/azure_openai/_constant.py
index d57e9ca351202b..973eb6c741a0ca 100644
--- a/api/core/model_runtime/model_providers/azure_openai/_constant.py
+++ b/api/core/model_runtime/model_providers/azure_openai/_constant.py
@@ -40,7 +40,7 @@ class AzureBaseModel(BaseModel):
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT,
+                'mode': LLMMode.CHAT.value,
                 'context_size': 4096,
             },
             parameter_rules=[
@@ -84,7 +84,7 @@ class AzureBaseModel(BaseModel):
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT,
+                'mode': LLMMode.CHAT.value,
                 'context_size': 16385,
             },
             parameter_rules=[
@@ -128,7 +128,7 @@ class AzureBaseModel(BaseModel):
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT,
+                'mode': LLMMode.CHAT.value,
                 'context_size': 8192,
             },
             parameter_rules=[
@@ -202,7 +202,7 @@ class AzureBaseModel(BaseModel):
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT,
+                'mode': LLMMode.CHAT.value,
                 'context_size': 32768,
             },
             parameter_rules=[
@@ -276,7 +276,7 @@ class AzureBaseModel(BaseModel):
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT,
+                'mode': LLMMode.CHAT.value,
                 'context_size': 128000,
             },
             parameter_rules=[
@@ -349,7 +349,7 @@ class AzureBaseModel(BaseModel):
             ],
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.CHAT,
+                'mode': LLMMode.CHAT.value,
                 'context_size': 128000,
             },
             parameter_rules=[
@@ -419,7 +419,7 @@ class AzureBaseModel(BaseModel):
             model_type=ModelType.LLM,
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_properties={
-                'mode': LLMMode.COMPLETION,
+                'mode': LLMMode.COMPLETION.value,
                 'context_size': 4096,
             },
             parameter_rules=[
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 42ac2b56835809..d12e21a6e897a2 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
@@ -32,7 +32,7 @@ def _invoke(self, model: str, credentials: dict,
 
         ai_model_entity = self._get_ai_model_entity(credentials['base_model_name'], model)
 
-        if ai_model_entity.entity.model_properties.get(ModelPropertyKey.MODE) == LLMMode.CHAT:
+        if ai_model_entity.entity.model_properties.get(ModelPropertyKey.MODE) == LLMMode.CHAT.value:
             # chat model
             return self._chat_generate(
                 model=model,
@@ -62,7 +62,7 @@ def get_num_tokens(self, model: str, credentials: dict, prompt_messages: list[Pr
         model_mode = self._get_ai_model_entity(credentials['base_model_name'], model).entity.model_properties.get(
             ModelPropertyKey.MODE)
 
-        if model_mode == LLMMode.CHAT:
+        if model_mode == LLMMode.CHAT.value:
             # chat model
             return self._num_tokens_from_messages(credentials, prompt_messages, tools)
         else:
@@ -87,7 +87,7 @@ def validate_credentials(self, model: str, credentials: dict) -> None:
         try:
             client = AzureOpenAI(**self._to_credential_kwargs(credentials))
 
-            if ai_model_entity.entity.model_properties.get(ModelPropertyKey.MODE) == LLMMode.CHAT:
+            if ai_model_entity.entity.model_properties.get(ModelPropertyKey.MODE) == LLMMode.CHAT.value:
                 # chat model
                 client.chat.completions.create(
                     messages=[{"role": "user", "content": 'ping'}],
diff --git a/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py b/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py
index 805a67db19e486..366950ad849784 100644
--- a/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py
+++ b/api/core/model_runtime/model_providers/huggingface_hub/llm/llm.py
@@ -97,7 +97,7 @@ def get_customizable_model_schema(self, model: str, credentials: dict) -> Option
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_type=ModelType.LLM,
             model_properties={
-                'mode': LLMMode.COMPLETION
+                'mode': LLMMode.COMPLETION.value
             },
             parameter_rules=self._get_customizable_model_parameter_rules()
         )
diff --git a/api/core/model_runtime/model_providers/replicate/llm/llm.py b/api/core/model_runtime/model_providers/replicate/llm/llm.py
index 8691833f0fa3c8..556fab977d9bc8 100644
--- a/api/core/model_runtime/model_providers/replicate/llm/llm.py
+++ b/api/core/model_runtime/model_providers/replicate/llm/llm.py
@@ -91,7 +91,7 @@ def get_customizable_model_schema(self, model: str, credentials: dict) -> Option
             fetch_from=FetchFrom.CUSTOMIZABLE_MODEL,
             model_type=ModelType.LLM,
             model_properties={
-                'mode': model_type
+                'mode': model_type.value
             },
             parameter_rules=self._get_customizable_model_parameter_rules(model, credentials)
         )