diff --git a/backend/app/controller/model_controller.py b/backend/app/controller/model_controller.py
index 692a7fb2a..db80dd9bf 100644
--- a/backend/app/controller/model_controller.py
+++ b/backend/app/controller/model_controller.py
@@ -1,6 +1,7 @@
 from fastapi import APIRouter, HTTPException
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, field_validator
 from app.component.model_validation import create_agent
+from app.model.chat import PLATFORM_MAPPING
 from camel.types import ModelType
 from app.component.error_format import normalize_error_to_openai_format
 from utils import traceroot_wrapper as traceroot
@@ -19,6 +20,11 @@ class ValidateModelRequest(BaseModel):
     model_config_dict: dict | None = Field(None, description="Model config dict")
     extra_params: dict | None = Field(None, description="Extra model parameters")
 
+    @field_validator("model_platform")
+    @classmethod
+    def map_model_platform(cls, v: str) -> str:
+        return PLATFORM_MAPPING.get(v, v)
+
 
 class ValidateModelResponse(BaseModel):
     is_valid: bool = Field(..., description="Is valid")
diff --git a/backend/app/model/chat.py b/backend/app/model/chat.py
index fc9010839..883cc522d 100644
--- a/backend/app/model/chat.py
+++ b/backend/app/model/chat.py
@@ -34,6 +34,9 @@ class QuestionAnalysisResult(BaseModel):
 
 McpServers = dict[Literal["mcpServers"], dict[str, dict]]
 
+PLATFORM_MAPPING = {
+    "Z.ai": "openai-compatible-model",
+}
 
 class Chat(BaseModel):
     task_id: str
@@ -65,6 +68,11 @@ class Chat(BaseModel):
     extra_params: dict | None = None  # For provider-specific parameters like Azure
     search_config: dict[str, str] | None = None  # User-specific search engine configurations (e.g., GOOGLE_API_KEY, SEARCH_ENGINE_ID)
 
+    @field_validator("model_platform")
+    @classmethod
+    def map_model_platform(cls, v: str) -> str:
+        return PLATFORM_MAPPING.get(v, v)
+
     @field_validator("model_type")
     @classmethod
     def check_model_type(cls, model_type: str):