diff --git a/.env.example b/.env.example
index dfb6bdc5..8f47c087 100644
--- a/.env.example
+++ b/.env.example
@@ -5,7 +5,9 @@ OPENAI_API_KEY=openai_api_key_placeholder
 # Optional API Keys (for alternative LLM providers)
 ANTHROPIC_API_KEY=anthropic_api_key_placeholder
 GOOGLE_API_KEY=GOOGLE_API_KEY_placeholder
-OPENROUTER_API_KEY=openrouter_api_key_placeholder
+XAI_API_KEY=XAI_API_KEY_placeholder
+DEEPSEEK_API_KEY=deepseek_api_key_placeholder
+DASHSCOPE_API_KEY=dashscope_api_key_placeholder
 
 # Deployment Configuration
 TRADINGAGENTS_RESULTS_DIR=/app/results
diff --git a/README.md b/README.md
index 69aa747e..56adfcf5 100644
--- a/README.md
+++ b/README.md
@@ -207,7 +207,7 @@ ALPHA_VANTAGE_API_KEY=your-alpha-vantage-key
 # 其他 LLM 提供商 (可選)
 ANTHROPIC_API_KEY=your-claude-api-key
 GOOGLE_API_KEY=your-gemini-api-key
-OPENROUTER_API_KEY=your-openrouter-api-key
+GOOGLE_API_KEY=your-gemini-api-key
 
 # ============ 後端服務配置 ============
 BACKEND_HOST=0.0.0.0
@@ -341,21 +341,19 @@ docker compose down -v
      
      **快速思維模型** (用於快速分析和即時回應):
      - `gpt-5.1-2025-11-13` - GPT-5.1 (最新)
-     - `gpt-5-mini-2025-08-07` - GPT-5 Mini
+     - `gpt-5-mini-2025-08-07` - GPT-5 Mini (預設)
      - `gpt-5-nano-2025-08-07` - GPT-5 Nano
      - `gpt-4.1-mini` - GPT-4.1 Mini
      - `gpt-4.1-nano` - GPT-4.1 Nano
-     - `gpt-4o` - GPT-4o (推薦預設)
-     - `gpt-4o-mini` - GPT-4o Mini (預設)
+     - `o4-mini-2025-04-16` - o4-mini
      
      **深層思維模型** (用於複雜推理和深度分析):
      - `gpt-5.1-2025-11-13` - GPT-5.1 (最新)
-     - `gpt-5-mini-2025-08-07` - GPT-5 Mini
+     - `gpt-5-mini-2025-08-07` - GPT-5 Mini (預設)
      - `gpt-5-nano-2025-08-07` - GPT-5 Nano
      - `gpt-4.1-mini` - GPT-4.1 Mini
      - `gpt-4.1-nano` - GPT-4.1 Nano
-     - `gpt-4o` - GPT-4o (推薦預設)
-     - `gpt-4o-mini` - GPT-4o Mini
+     - `o4-mini-2025-04-16` - o4-mini
      
      > 💡 **提示**: 快速思維模型用於初步分析和資料收集，深層思維模型用於複雜決策和策略制定。您可以根據需求選擇不同的模型組合。
 
@@ -410,7 +408,7 @@ curl -X POST http://localhost:8000/api/analyze \
     "ticker": "NVDA",
     "analysis_date": "2024-01-15",
     "research_depth": "medium",
-    "model": "gpt-4o",
+    "model": "gpt-5-mini-2025-08-07",
     "selected_analysts": ["market", "sentiment", "news", "fundamental"],
     "api_key": "sk-your-openai-key"
   }'
@@ -502,7 +500,7 @@ TradingAgents 模擬真實交易公司的組織架構，每個代理都有其專
 - 支援 OpenAI (GPT-4, GPT-4o, o1 系列)
 - 支援 Anthropic Claude
 - 支援 Google Gemini
-- 可透過 OpenRouter 存取更多模型
+- 支援 Google Gemini
 
 #### 3. 長期記憶系統
 - 使用 ChromaDB 向量資料庫儲存歷史決策
diff --git a/backend/app/core/config.py b/backend/app/core/config.py
index 4a5872c4..6eb795be 100644
--- a/backend/app/core/config.py
+++ b/backend/app/core/config.py
@@ -33,8 +33,8 @@ class Settings(BaseSettings):
     results_dir: str = "./results"
     max_debate_rounds: int = 1
     max_risk_discuss_rounds: int = 1
-    deep_think_llm: str = "gpt-4o-mini"
-    quick_think_llm: str = "gpt-4o-mini"
+    deep_think_llm: str = "gpt-5-mini-2025-08-07"
+    quick_think_llm: str = "gpt-5-mini-2025-08-07"
     
     class Config:
         env_file = ".env"
diff --git a/backend/app/models/schemas.py b/backend/app/models/schemas.py
index 76293a25..f7249d06 100644
--- a/backend/app/models/schemas.py
+++ b/backend/app/models/schemas.py
@@ -15,8 +15,8 @@ class AnalysisRequest(BaseModel):
         description="List of analysts to include in analysis"
     )
     research_depth: Optional[int] = Field(default=1, ge=1, le=5, description="Research depth (1-5)")
-    deep_think_llm: Optional[str] = Field(default="gpt-4o-mini", description="Deep thinking LLM model")
-    quick_think_llm: Optional[str] = Field(default="gpt-4o-mini", description="Quick thinking LLM model")
+    deep_think_llm: Optional[str] = Field(default="gpt-5-mini-2025-08-07", description="Deep thinking LLM model")
+    quick_think_llm: Optional[str] = Field(default="gpt-5-mini-2025-08-07", description="Quick thinking LLM model")
     
     # API Configuration
     openai_api_key: Optional[str] = Field(None, description="OpenAI API Key (optional if set on server)", min_length=0)
diff --git a/backend/app/services/trading_service.py b/backend/app/services/trading_service.py
index a3ab9144..1d157a59 100644
--- a/backend/app/services/trading_service.py
+++ b/backend/app/services/trading_service.py
@@ -26,8 +26,8 @@ class TradingService:
     def create_config(
         self,
         research_depth: int = 1,
-        deep_think_llm: str = "gpt-4o-mini",
-        quick_think_llm: str = "gpt-4o-mini",
+        deep_think_llm: str = "gpt-5-mini-2025-08-07",
+        quick_think_llm: str = "gpt-5-mini-2025-08-07",
     ) -> Dict[str, Any]:
         """Create configuration for TradingAgents"""
         config = self.default_config.copy()
@@ -47,8 +47,8 @@ class TradingService:
         alpha_vantage_api_key: Optional[str] = None,
         analysts: Optional[List[str]] = None,
         research_depth: int = 1,
-        deep_think_llm: str = "gpt-4o-mini",
-        quick_think_llm: str = "gpt-4o-mini",
+        deep_think_llm: str = "gpt-5-mini-2025-08-07",
+        quick_think_llm: str = "gpt-5-mini-2025-08-07",
     ) -> Dict[str, Any]:
         """
         Run trading analysis for a given ticker and date with user-provided API keys
@@ -170,21 +170,45 @@ class TradingService:
     def get_available_llms(self) -> List[str]:
         """Get list of available OpenAI LLM models"""
         return [
+            # OpenAI
             "gpt-5.1-2025-11-13",
             "gpt-5-mini-2025-08-07",
             "gpt-5-nano-2025-08-07",
             "gpt-4.1-mini",
             "gpt-4.1-nano",
-            "gpt-4o",
-            "gpt-4o-mini",
+            "o4-mini-2025-04-16",
+            # Anthropic
+            "claude-haiku-4-5-20251001",
+            "claude-sonnet-4-5-20250929",
+            "claude-sonnet-4-0",
+            "claude-3-5-haiku-20241022",
+            "claude-3-haiku-20240307",
+            # Google
+            "gemini-2.0-flash-lite",
+            "gemini-2.0-flash",
+            "gemini-2.5-flash-lite",
+            # Grok
+            "grok-4-1-fast-reasoning",
+            "grok-4-1-fast-non-reasoning",
+            "grok-4-fast-reasoning",
+            "grok-4-fast-non-reasoning",
+            "grok-4-0709",
+            "grok-3",
+            "grok-3-mini",
+            # DeepSeek
+            "deepseek-reasoner",
+            "deepseek-chat",
+            # Qwen
+            "qwen3-max",
+            "qwen-plus",
         ]
     
     def get_default_config(self) -> Dict[str, Any]:
         """Get default configuration"""
         return {
             "research_depth": 1,
-            "deep_think_llm": "gpt-4o-mini",
-            "quick_think_llm": "gpt-4o-mini",
+            "deep_think_llm": "gpt-5-mini-2025-08-07",
+            "quick_think_llm": "gpt-5-mini-2025-08-07",
             "max_debate_rounds": 1,
             "max_risk_discuss_rounds": 1,
         }
diff --git a/cli/utils.py b/cli/utils.py
index 1df018fc..02ad07ce 100644
--- a/cli/utils.py
+++ b/cli/utils.py
@@ -187,28 +187,36 @@ def select_shallow_thinking_agent(provider) -> str:
             ("GPT-5-nano","gpt-5-nano-2025-08-07"),
             ("GPT-4.1-mini", "gpt-4.1-mini"),
             ("GPT-4.1-nano", "gpt-4.1-nano"),
-            ("GPT-4o", "gpt-4o"),
-            ("GPT-4o-mini", "gpt-4o-mini")
+            ("o4-mini", "o4-mini-2025-04-16")
         ],
         "anthropic": [
-            ("Claude Haiku 3.5", "claude-3-5-haiku-latest"),
-            ("Claude Sonnet 3.5", "claude-3-5-sonnet-latest"),
-            ("Claude Sonnet 3.7", "claude-3-7-sonnet-latest"),
+            ("Claude Haiku 4.5", "claude-haiku-4-5-20251001"),
+            ("Claude Sonnet 4.5", "claude-sonnet-4-5-20250929"),
             ("Claude Sonnet 4", "claude-sonnet-4-0"),
+            ("Claude Haiku 3.5", "claude-3-5-haiku-20241022"),
+            ("Claude Haiku 3", "claude-3-haiku-20240307")
         ],
         "google": [
             ("Gemini 2.0 Flash-Lite", "gemini-2.0-flash-lite"),
             ("Gemini 2.0 Flash", "gemini-2.0-flash"),
-            ("Gemini 2.5 Flash", "gemini-2.5-flash-preview-05-20"),
+            ("Gemini 2.5 Flash Lite", "gemini-2.5-flash-lite")
         ],
-        "openrouter": [
-            ("Meta: Llama 4 Scout", "meta-llama/llama-4-scout:free"),
-            ("Meta: Llama 3.3 8B Instruct - Llama 3.3 70B", "meta-llama/llama-3.3-8b-instruct:free"),
-            ("google/gemini-2.0-flash-exp:free - Gemini Flash 2.0", "google/gemini-2.0-flash-exp:free"),
+        "Grok":[
+            ("Grok 4.1 Fast Reasoning","grok-4-1-fast-reasoning"),
+            ("Grok 4.1 Fast Non Reasoning","grok-4-1-fast-non-reasoning"),
+            ("Grok 4 Fast Reasoning","grok-4-fast-reasoning"),
+            ("Grok 4 Fast Non Reasoning","grok-4-fast-non-reasoning"),
+            ("Grok 4","grok-4-0709"),
+            ("Grok 3","grok-3"),
+            ("Grok 3 Mini","grok-3-mini")           
         ],
-        "ollama": [
-            ("llama3.1 本機版", "llama3.1"),
-            ("llama3.2 本機版", "llama3.2"),
+        "DeepSeek": [
+            ("DeepSeek Reasoner","deepseek-reasoner"),
+            ("DeepSeek Chat","deepseek-chat")
+        ],
+        "Qwen":[
+            ("Qwen 3.5 Max", "qwen3-max"),
+            ("Qwen Plus", "qwen-plus")
         ]
     }
 
@@ -261,29 +269,36 @@ def select_deep_thinking_agent(provider) -> str:
             ("GPT-5-nano","gpt-5-nano-2025-08-07"),
             ("GPT-4.1-mini", "gpt-4.1-mini"),
             ("GPT-4.1-nano", "gpt-4.1-nano"),
-            ("GPT-4o", "gpt-4o"),
-            ("GPT-4o-mini", "gpt-4o-mini")
+            ("o4-mini", "o4-mini-2025-04-16")
         ],
         "anthropic": [
-            ("Claude Haiku 3.5", "claude-3-5-haiku-latest"),
-            ("Claude Sonnet 3.5", "claude-3-5-sonnet-latest"),
-            ("Claude Sonnet 3.7", "claude-3-7-sonnet-latest"),
+            ("Claude Haiku 4.5", "claude-haiku-4-5-20251001"),
+            ("Claude Sonnet 4.5", "claude-sonnet-4-5-20250929"),
             ("Claude Sonnet 4", "claude-sonnet-4-0"),
-            ("Claude Opus 4", "claude-opus-4-0"),
+            ("Claude Haiku 3.5", "claude-3-5-haiku-20241022"),
+            ("Claude Haiku 3", "claude-3-haiku-20240307")
         ],
         "google": [
             ("Gemini 2.0 Flash-Lite", "gemini-2.0-flash-lite"),
             ("Gemini 2.0 Flash", "gemini-2.0-flash"),
-            ("Gemini 2.5 Flash", "gemini-2.5-flash-preview-05-20"),
-            ("Gemini 2.5 Pro", "gemini-2.5-pro-preview-06-05"),
+            ("Gemini 2.5 Flash Lite", "gemini-2.5-flash-lite")
         ],
-        "openrouter": [
-            ("DeepSeek V3 - 一個 685B 參數的專家混合模型", "deepseek/deepseek-chat-v3-0324:free"),
-            ("Deepseek - DeepSeek 團隊旗艦聊天模型的最新版本", "deepseek/deepseek-chat-v3-0324:free"),
+        "Grok":[
+            ("Grok 4.1 Fast Reasoning","grok-4-1-fast-reasoning"),
+            ("Grok 4.1 Fast Non Reasoning","grok-4-1-fast-non-reasoning"),
+            ("Grok 4 Fast Reasoning","grok-4-fast-reasoning"),
+            ("Grok 4 Fast Non Reasoning","grok-4-fast-non-reasoning"),
+            ("Grok 4","grok-4-0709"),
+            ("Grok 3","grok-3"),
+            ("Grok 3 Mini","grok-3-mini")           
         ],
-        "ollama": [
-            ("llama3.1 本機版", "llama3.1"),
-            ("qwen3", "qwen3"),
+        "DeepSeek":[
+            ("DeepSeek Reasoner","deepseek-reasoner"),
+            ("DeepSeek Chat","deepseek-chat")
+        ],
+        "Qwen":[
+            ("Qwen 3.5 Max", "qwen3-max"),
+            ("Qwen Plus", "qwen-plus")
         ]
     }
     
@@ -326,8 +341,9 @@ def select_llm_provider() -> tuple[str, str]:
         ("OpenAI", "https://api.openai.com/v1"),
         ("Anthropic", "https://api.anthropic.com/"),
         ("Google", "https://generativelanguage.googleapis.com/v1"),
-        ("Openrouter", "https://openrouter.ai/api/v1"),
-        ("Ollama", "http://localhost:11434/v1"),        
+        ("Grok", "https://api.x.ai/v1"),
+        ("DeepSeek", "https://api.deepseek.com"),
+        ("Qwen", "https://dashscope-intl.aliyuncs.com/compatible-mode/v1")       
     ]
     
     choice = questionary.select(
diff --git a/frontend/components/analysis/AnalysisForm.tsx b/frontend/components/analysis/AnalysisForm.tsx
index 712b3c70..5d27744e 100644
--- a/frontend/components/analysis/AnalysisForm.tsx
+++ b/frontend/components/analysis/AnalysisForm.tsx
@@ -65,8 +65,8 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
       analysis_date: format(new Date(), "yyyy-MM-dd"),
       analysts: ["market", "social", "news", "fundamentals"], // 預設全選
       research_depth: 3, // 預設中等層級
-      shallow_thinking_agent: "gpt-4o-mini",
-      deep_thinking_agent: "gpt-4o",
+      shallow_thinking_agent: "gpt-5-mini-2025-08-07",
+      deep_thinking_agent: "gpt-5-mini-2025-08-07",
       openai_api_key: "",
       openai_base_url: "https://api.openai.com/v1",
       alpha_vantage_api_key: "",
@@ -236,13 +236,42 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                           </SelectTrigger>
                         </FormControl>
                         <SelectContent>
-                          <SelectItem value="gpt-5.1-2025-11-13">GPT-5.1</SelectItem>
-                          <SelectItem value="gpt-5-mini-2025-08-07">GPT-5 Mini</SelectItem>
-                          <SelectItem value="gpt-5-nano-2025-08-07">GPT-5 Nano</SelectItem>
-                          <SelectItem value="gpt-4.1-mini">GPT-4.1 Mini</SelectItem>
-                          <SelectItem value="gpt-4.1-nano">GPT-4.1 Nano</SelectItem>
-                          <SelectItem value="gpt-4o">GPT-4o</SelectItem>
-                          <SelectItem value="gpt-4o-mini">GPT-4o Mini</SelectItem>
+                          {/* OpenAI */}
+                          <SelectItem value="gpt-5.1-2025-11-13">OpenAI: GPT-5.1</SelectItem>
+                          <SelectItem value="gpt-5-mini-2025-08-07">OpenAI: GPT-5 Mini</SelectItem>
+                          <SelectItem value="gpt-5-nano-2025-08-07">OpenAI: GPT-5 Nano</SelectItem>
+                          <SelectItem value="gpt-4.1-mini">OpenAI: GPT-4.1 Mini</SelectItem>
+                          <SelectItem value="gpt-4.1-nano">OpenAI: GPT-4.1 Nano</SelectItem>
+                          <SelectItem value="o4-mini-2025-04-16">OpenAI: o4-mini</SelectItem>
+                          
+                          {/* Anthropic */}
+                          <SelectItem value="claude-haiku-4-5-20251001">Anthropic: Claude Haiku 4.5</SelectItem>
+                          <SelectItem value="claude-sonnet-4-5-20250929">Anthropic: Claude Sonnet 4.5</SelectItem>
+                          <SelectItem value="claude-sonnet-4-0">Anthropic: Claude Sonnet 4</SelectItem>
+                          <SelectItem value="claude-3-5-haiku-20241022">Anthropic: Claude 3.5 Haiku</SelectItem>
+                          <SelectItem value="claude-3-haiku-20240307">Anthropic: Claude 3 Haiku</SelectItem>
+
+                          {/* Google */}
+                          <SelectItem value="gemini-2.0-flash-lite">Google: Gemini 2.0 Flash-Lite</SelectItem>
+                          <SelectItem value="gemini-2.0-flash">Google: Gemini 2.0 Flash</SelectItem>
+                          <SelectItem value="gemini-2.5-flash-lite">Google: Gemini 2.5 Flash Lite</SelectItem>
+
+                          {/* Grok */}
+                          <SelectItem value="grok-4-1-fast-reasoning">Grok: 4.1 Fast Reasoning</SelectItem>
+                          <SelectItem value="grok-4-1-fast-non-reasoning">Grok: 4.1 Fast Non Reasoning</SelectItem>
+                          <SelectItem value="grok-4-fast-reasoning">Grok: 4 Fast Reasoning</SelectItem>
+                          <SelectItem value="grok-4-fast-non-reasoning">Grok: 4 Fast Non Reasoning</SelectItem>
+                          <SelectItem value="grok-4-0709">Grok: 4</SelectItem>
+                          <SelectItem value="grok-3">Grok: 3</SelectItem>
+                          <SelectItem value="grok-3-mini">Grok: 3 Mini</SelectItem>
+
+                          {/* DeepSeek */}
+                          <SelectItem value="deepseek-reasoner">DeepSeek: Reasoner</SelectItem>
+                          <SelectItem value="deepseek-chat">DeepSeek: Chat</SelectItem>
+
+                          {/* Qwen */}
+                          <SelectItem value="qwen3-max">Qwen: 3.5 Max</SelectItem>
+                          <SelectItem value="qwen-plus">Qwen: Plus</SelectItem>
                         </SelectContent>
                       </Select>
                       <FormDescription>
@@ -266,13 +295,42 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                           </SelectTrigger>
                         </FormControl>
                         <SelectContent>
-                          <SelectItem value="gpt-5.1-2025-11-13">GPT-5.1</SelectItem>
-                          <SelectItem value="gpt-5-mini-2025-08-07">GPT-5 Mini</SelectItem>
-                          <SelectItem value="gpt-5-nano-2025-08-07">GPT-5 Nano</SelectItem>
-                          <SelectItem value="gpt-4.1-mini">GPT-4.1 Mini</SelectItem>
-                          <SelectItem value="gpt-4.1-nano">GPT-4.1 Nano</SelectItem>
-                          <SelectItem value="gpt-4o">GPT-4o</SelectItem>
-                          <SelectItem value="gpt-4o-mini">GPT-4o Mini</SelectItem>
+                          {/* OpenAI */}
+                          <SelectItem value="gpt-5.1-2025-11-13">OpenAI: GPT-5.1</SelectItem>
+                          <SelectItem value="gpt-5-mini-2025-08-07">OpenAI: GPT-5 Mini</SelectItem>
+                          <SelectItem value="gpt-5-nano-2025-08-07">OpenAI: GPT-5 Nano</SelectItem>
+                          <SelectItem value="gpt-4.1-mini">OpenAI: GPT-4.1 Mini</SelectItem>
+                          <SelectItem value="gpt-4.1-nano">OpenAI: GPT-4.1 Nano</SelectItem>
+                          <SelectItem value="o4-mini-2025-04-16">OpenAI: o4-mini</SelectItem>
+                          
+                          {/* Anthropic */}
+                          <SelectItem value="claude-haiku-4-5-20251001">Anthropic: Claude Haiku 4.5</SelectItem>
+                          <SelectItem value="claude-sonnet-4-5-20250929">Anthropic: Claude Sonnet 4.5</SelectItem>
+                          <SelectItem value="claude-sonnet-4-0">Anthropic: Claude Sonnet 4</SelectItem>
+                          <SelectItem value="claude-3-5-haiku-20241022">Anthropic: Claude 3.5 Haiku</SelectItem>
+                          <SelectItem value="claude-3-haiku-20240307">Anthropic: Claude 3 Haiku</SelectItem>
+
+                          {/* Google */}
+                          <SelectItem value="gemini-2.0-flash-lite">Google: Gemini 2.0 Flash-Lite</SelectItem>
+                          <SelectItem value="gemini-2.0-flash">Google: Gemini 2.0 Flash</SelectItem>
+                          <SelectItem value="gemini-2.5-flash-lite">Google: Gemini 2.5 Flash Lite</SelectItem>
+
+                          {/* Grok */}
+                          <SelectItem value="grok-4-1-fast-reasoning">Grok: 4.1 Fast Reasoning</SelectItem>
+                          <SelectItem value="grok-4-1-fast-non-reasoning">Grok: 4.1 Fast Non Reasoning</SelectItem>
+                          <SelectItem value="grok-4-fast-reasoning">Grok: 4 Fast Reasoning</SelectItem>
+                          <SelectItem value="grok-4-fast-non-reasoning">Grok: 4 Fast Non Reasoning</SelectItem>
+                          <SelectItem value="grok-4-0709">Grok: 4</SelectItem>
+                          <SelectItem value="grok-3">Grok: 3</SelectItem>
+                          <SelectItem value="grok-3-mini">Grok: 3 Mini</SelectItem>
+
+                          {/* DeepSeek */}
+                          <SelectItem value="deepseek-reasoner">DeepSeek: Reasoner</SelectItem>
+                          <SelectItem value="deepseek-chat">DeepSeek: Chat</SelectItem>
+
+                          {/* Qwen */}
+                          <SelectItem value="qwen3-max">Qwen: 3.5 Max</SelectItem>
+                          <SelectItem value="qwen-plus">Qwen: Plus</SelectItem>
                         </SelectContent>
                       </Select>
                       <FormDescription>
@@ -311,12 +369,67 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                 name="openai_base_url"
                 render={({ field }) => (
                   <FormItem>
-                    <FormLabel>OpenAI Base URL（選填）</FormLabel>
-                    <FormControl>
-                      <Input placeholder="https://api.openai.com/v1" {...field} />
-                    </FormControl>
+                    <FormLabel>API Base URL</FormLabel>
+                    <Select
+                      onValueChange={(value) => {
+                        if (value !== "custom") {
+                          field.onChange(value);
+                        } else {
+                          field.onChange(""); // Clear value for custom input
+                        }
+                        // Store selection state if needed, or just rely on field value
+                      }}
+                      defaultValue={
+                        [
+                          "https://api.openai.com/v1",
+                          "https://api.anthropic.com/",
+                          "https://generativelanguage.googleapis.com/v1",
+                          "https://api.x.ai/v1",
+                          "https://api.deepseek.com",
+                          "https://dashscope-intl.aliyuncs.com/compatible-mode/v1"
+                        ].includes(field.value || "") 
+                          ? field.value 
+                          : "custom"
+                      }
+                    >
+                      <FormControl>
+                        <SelectTrigger>
+                          <SelectValue placeholder="選擇 API 端點" />
+                        </SelectTrigger>
+                      </FormControl>
+                      <SelectContent>
+                        <SelectItem value="https://api.openai.com/v1">OpenAI (預設)</SelectItem>
+                        <SelectItem value="https://api.anthropic.com/">Anthropic</SelectItem>
+                        <SelectItem value="https://generativelanguage.googleapis.com/v1">Google Gemini</SelectItem>
+                        <SelectItem value="https://api.x.ai/v1">Grok (xAI)</SelectItem>
+                        <SelectItem value="https://api.deepseek.com">DeepSeek</SelectItem>
+                        <SelectItem value="https://dashscope-intl.aliyuncs.com/compatible-mode/v1">Qwen (Alibaba)</SelectItem>
+                        <SelectItem value="custom">自訂端點</SelectItem>
+                      </SelectContent>
+                    </Select>
+                    
+                    {/* Show input only when custom is selected or value is not in the list */}
+                    {(![
+                      "https://api.openai.com/v1",
+                      "https://api.anthropic.com/",
+                      "https://generativelanguage.googleapis.com/v1",
+                      "https://api.x.ai/v1",
+                      "https://api.deepseek.com",
+                      "https://dashscope-intl.aliyuncs.com/compatible-mode/v1"
+                    ].includes(field.value || "") || field.value === "") && (
+                      <div className="mt-2">
+                        <FormControl>
+                          <Input 
+                            placeholder="請輸入自訂 Base URL" 
+                            value={field.value || ""} 
+                            onChange={field.onChange} 
+                          />
+                        </FormControl>
+                      </div>
+                    )}
+                    
                     <FormDescription>
-                      API 基礎網址（預設為 OpenAI 官方）
+                      選擇或輸入 LLM 服務的 API 基礎網址
                     </FormDescription>
                     <FormMessage />
                   </FormItem>
diff --git a/main.py b/main.py
index 12df9dea..24392ba7 100644
--- a/main.py
+++ b/main.py
@@ -8,8 +8,8 @@ load_dotenv(override=True)
 
 # 建立自訂設定
 config = DEFAULT_CONFIG.copy()
-config["deep_think_llm"] = "gpt-4o-mini"  # 使用不同的模型
-config["quick_think_llm"] = "gpt-4o-mini"  # 使用不同的模型
+config["deep_think_llm"] = "gpt-5-mini-2025-08-07"  # 使用不同的模型
+config["quick_think_llm"] = "gpt-5-mini-2025-08-07"  # 使用不同的模型
 config["max_debate_rounds"] = 1  # 增加辯論回合
 
 # 設定資料供應商 (預設使用 yfinance 和 alpha_vantage)
diff --git a/tradingagents/agents/managers/research_manager.py b/tradingagents/agents/managers/research_manager.py
index ce2bfa2f..f986a92a 100644
--- a/tradingagents/agents/managers/research_manager.py
+++ b/tradingagents/agents/managers/research_manager.py
@@ -47,7 +47,7 @@ def create_research_manager(llm, memory):
             return text[:max_chars] + "\n...(內容已截斷)"
         
         # 為每個報告設置合理的字符限制
-        # 模型 gpt-4o-mini 的限制是 8192 tokens
+        # 模型 gpt-5-mini 的限制是 8192 tokens
         # 混合中英文估算: 1 字符 ≈ 1.5-2 tokens (取保守值)
         # 目標: 總字符數 < 3500 字符 (約 5250-7000 tokens，留足夠 tokens 給 completion)
         market_research_report = truncate_text(market_research_report, 500)
diff --git a/tradingagents/agents/managers/risk_manager.py b/tradingagents/agents/managers/risk_manager.py
index 97189860..81322cd1 100644
--- a/tradingagents/agents/managers/risk_manager.py
+++ b/tradingagents/agents/managers/risk_manager.py
@@ -49,7 +49,7 @@ def create_risk_manager(llm, memory):
             return text[:max_chars] + "\n...(內容已截斷)"
         
         # 為每個報告設置合理的字符限制
-        # 模型 gpt-4o-mini 的限制是 8192 tokens
+        # 模型 gpt-5-mini 的限制是 8192 tokens
         # 混合中英文估算: 1 字符 ≈ 1.5-2 tokens (取保守值)
         # 目標: 總字符數 < 3500 字符 (約 5250-7000 tokens，留足夠 tokens 給 completion)
         market_research_report = truncate_text(market_research_report, 500)
diff --git a/tradingagents/agents/utils/memory.py b/tradingagents/agents/utils/memory.py
index e62ff04e..5d75266f 100644
--- a/tradingagents/agents/utils/memory.py
+++ b/tradingagents/agents/utils/memory.py
@@ -6,10 +6,7 @@ from openai import OpenAI
 
 class FinancialSituationMemory:
     def __init__(self, name, config):
-        if config["backend_url"] == "http://localhost:11434/v1":
-            self.embedding = "nomic-embed-text"
-        else:
-            self.embedding = "text-embedding-3-small"
+        self.embedding = "text-embedding-3-small"
         # Get the OpenAI API key from environment variable
         openai_api_key = os.getenv("OPENAI_API_KEY")
         self.client = OpenAI(base_url=config["backend_url"], api_key=openai_api_key)
diff --git a/tradingagents/default_config.py b/tradingagents/default_config.py
index b5be7c69..e22edaab 100644
--- a/tradingagents/default_config.py
+++ b/tradingagents/default_config.py
@@ -10,8 +10,8 @@ DEFAULT_CONFIG = {
     )),
     # LLM 設定
     "llm_provider": "openai",
-    "deep_think_llm": "gpt-4o-mini",
-    "quick_think_llm": "gpt-4o-mini",
+    "deep_think_llm": "gpt-5-mini-2025-08-07",
+    "quick_think_llm": "gpt-5-mini-2025-08-07",
     "backend_url": "https://api.openai.com/v1",
     # 辯論與討論設定
     "max_debate_rounds": 1,
diff --git a/tradingagents/graph/trading_graph.py b/tradingagents/graph/trading_graph.py
index 1a19cc1f..63b12f62 100644
--- a/tradingagents/graph/trading_graph.py
+++ b/tradingagents/graph/trading_graph.py
@@ -83,7 +83,7 @@ class TradingAgentsGraph:
 
         # 初始化 LLM
         provider = self.config["llm_provider"].lower()
-        if provider in ["openai", "ollama", "openrouter"]:
+        if provider in ["openai"]:
             # Get the OpenAI API key from environment variable
             openai_api_key = os.getenv("OPENAI_API_KEY")
             self.deep_thinking_llm = ChatOpenAI(