diff --git a/README.md b/README.md
index c3fe6827..5fa3455c 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ TradingAgentsX 支援業界領先的多家 LLM 提供商，並為每個模型配
 | 提供商             | 支援模型                                                                                         | Base URL                                                  | 是否支援自訂端點 |
 | ------------------ | ------------------------------------------------------------------------------------------------ | --------------------------------------------------------- | ---------------- |
 | **OpenAI**         | GPT-5.1, GPT-5 Mini/Nano, GPT-4.1 Mini/Nano, o4-mini                                             | `https://api.openai.com/v1`                               | ✅ 是            |
-| **Anthropic**      | Claude Haiku 4.5, Claude Sonnet 4.5/4.0, Claude 3.5 Haiku, Claude 3 Haiku                        | `https://api.anthropic.com/v1/`                           | ✅ 是            |
+| **Anthropic**      | Claude Haiku 4.5, Claude Sonnet 4.5/4.0, Claude 3.5 Haiku, Claude 3 Haiku                        | `https://api.anthropic.com`                           | ✅ 是            |
 | **Gemini**         | Gemini 2.5 Pro, Gemini 2.5 Flash, Gemini 2.5 Flash Lite, Gemini 2.0 Flash, Gemini 2.0 Flash Lite | `https://generativelanguage.googleapis.com/v1beta/openai` | ✅ 是            |
 | **Grok (xAI)**     | Grok-4.1 Fast, Grok-4 Fast, Grok-4, Grok-3, Grok-3 Mini                                          | `https://api.x.ai/v1`                                     | ✅ 是            |
 | **DeepSeek**       | DeepSeek Reasoner, DeepSeek Chat                                                                 | `https://api.deepseek.com/v1`                                | ✅ 是            |
@@ -483,7 +483,7 @@ docker compose down -v
    快速思維 API Key: sk-your-openai-key
 
    深層思維模型: claude-sonnet-4-5
-   深層思維 Base URL: https://api.anthropic.com/v1/
+   深層思維 Base URL: https://api.anthropic.com
    深層思維 API Key: sk-ant-your-claude-key
 
    嵌入模型 Base URL: 自訂 → https://api.your-embedding-service.com/v1
@@ -571,7 +571,7 @@ curl -X POST http://localhost:8000/api/analyze \
     "quick_think_llm": "gpt-5-mini-2025-08-07",
     "analysts": ["market", "sentiment", "news", "fundamental"],
     "quick_think_base_url": "https://api.openai.com/v1",
-    "deep_think_base_url": "https://api.anthropic.com/v1/",
+    "deep_think_base_url": "https://api.anthropic.com",
     "embedding_base_url": "https://api.openai.com/v1",
     "quick_think_api_key": "sk-your-openai-key",
     "deep_think_api_key": "sk-ant-your-claude-key",
diff --git a/cli/utils.py b/cli/utils.py
index f807a199..8365008a 100644
--- a/cli/utils.py
+++ b/cli/utils.py
@@ -428,7 +428,7 @@ def select_llm_provider() -> tuple[str, str]:
     # 定義 LLM 供應商及其 API 基礎 URL
     BASE_URLS = [
         ("OpenAI", "https://api.openai.com/v1"),
-        ("Anthropic", "https://api.anthropic.com/v1/"),
+        ("Anthropic", "https://api.anthropic.com"),
         ("Google", "https://generativelanguage.googleapis.com/v1beta/openai"),
         ("Grok", "https://api.x.ai/v1"),
         ("DeepSeek", "https://api.deepseek.com/v1"),
diff --git a/frontend/components/analysis/AnalysisForm.tsx b/frontend/components/analysis/AnalysisForm.tsx
index 37af95d8..15480c72 100644
--- a/frontend/components/analysis/AnalysisForm.tsx
+++ b/frontend/components/analysis/AnalysisForm.tsx
@@ -516,7 +516,7 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                       defaultValue={
                         [
                           "https://api.openai.com/v1",
-                          "https://api.anthropic.com/v1/",
+                          "https://api.anthropic.com",
                           "https://api.x.ai/v1",
                           "https://api.deepseek.com/v1",
                           "https://dashscope-intl.aliyuncs.com/compatible-mode/v1",
@@ -534,7 +534,7 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                         <SelectItem value="https://api.openai.com/v1">
                           OpenAI (預設)
                         </SelectItem>
-                        <SelectItem value="https://api.anthropic.com/v1/">
+                        <SelectItem value="https://api.anthropic.com">
                           Anthropic
                         </SelectItem>
                         <SelectItem value="https://generativelanguage.googleapis.com/v1beta/openai">
@@ -555,7 +555,7 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
 
                     {(![
                       "https://api.openai.com/v1",
-                      "https://api.anthropic.com/v1/",
+                      "https://api.anthropic.com",
                       "https://generativelanguage.googleapis.com/v1beta/openai",
                       "https://api.x.ai/v1",
                       "https://api.deepseek.com/v1",
@@ -615,7 +615,7 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                       defaultValue={
                         [
                           "https://api.openai.com/v1",
-                          "https://api.anthropic.com/v1/",
+                          "https://api.anthropic.com",
                           "https://api.x.ai/v1",
                           "https://api.deepseek.com/v1",
                           "https://dashscope-intl.aliyuncs.com/compatible-mode/v1",
@@ -633,7 +633,7 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
                         <SelectItem value="https://api.openai.com/v1">
                           OpenAI (預設)
                         </SelectItem>
-                        <SelectItem value="https://api.anthropic.com/v1/">
+                        <SelectItem value="https://api.anthropic.com">
                           Anthropic
                         </SelectItem>
                         <SelectItem value="https://generativelanguage.googleapis.com/v1beta/openai">
@@ -654,7 +654,7 @@ export function AnalysisForm({ onSubmit, loading = false }: AnalysisFormProps) {
 
                     {(![
                       "https://api.openai.com/v1",
-                      "https://api.anthropic.com/v1/",
+                      "https://api.anthropic.com",
                       "https://generativelanguage.googleapis.com/v1beta/openai",
                       "https://api.x.ai/v1",
                       "https://api.deepseek.com/v1",