diff --git a/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/deepseek.ts b/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/deepseek.ts
index 967be8c6e2..0ebb7307d2 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/deepseek.ts
+++ b/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/deepseek.ts
@@ -12,7 +12,9 @@ import { LLMProvider } from './provider';
 import { LLMProviderOptions } from '../manager/ai-manager';
 
 export class DeepSeekProvider extends LLMProvider {
-  baseURL = 'https://api.deepseek.com';
+  get baseURL() {
+    return 'https://api.deepseek.com';
+  }
 
   createModel() {
     const { baseURL, apiKey } = this.serviceOptions || {};
diff --git a/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/openai.ts b/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/openai.ts
index bdc6243a4e..798a463bb1 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/openai.ts
+++ b/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/openai.ts
@@ -11,7 +11,9 @@ import { ChatOpenAI } from '@langchain/openai';
 import { LLMProvider } from './provider';
 
 export class OpenAIProvider extends LLMProvider {
-  baseURL = 'https://api.openai.com/v1';
+  get baseURL() {
+    return 'https://api.openai.com/v1';
+  }
 
   createModel() {
     const { baseURL, apiKey } = this.serviceOptions || {};
diff --git a/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/provider.ts b/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/provider.ts
index 419a354f63..5b9df78701 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/provider.ts
+++ b/packages/plugins/@nocobase/plugin-ai/src/server/llm-providers/provider.ts
@@ -13,7 +13,6 @@ import { parseMessages } from './handlers/parse-messages';
 import { Application } from '@nocobase/server';
 
 export abstract class LLMProvider {
-  baseURL?: string;
   serviceOptions: Record<string, any>;
   modelOptions: Record<string, any>;
   messages: any[];
@@ -22,6 +21,10 @@ export abstract class LLMProvider {
 
   abstract createModel(): BaseChatModel;
 
+  get baseURL() {
+    return null;
+  }
+
   constructor(opts: {
     app: Application;
     serviceOptions: any;