diff --git a/app/agent/llm/provider.py b/app/agent/llm/provider.py
index 9742e7152..17f05ef3e 100644
--- a/app/agent/llm/provider.py
+++ b/app/agent/llm/provider.py
@@ -417,7 +417,7 @@ class LLMProviderManager(metaclass=Singleton):
                 base_url_editable=True,
                 requires_base_url=True,
                 supports_api_key=True,
-                api_key_hint="通用 OpenAI-compatible 兜底入口，需要手动填写 Base URL。",
+                api_key_hint="填写 OpenAI-compatible 服务的 API Key；如服务未启用鉴权，可填写任意占位值。",
                 description="通用 OpenAI-compatible 模型服务。",
                 sort_order=1,
             ),
diff --git a/tests/test_llm_provider_hints.py b/tests/test_llm_provider_hints.py
new file mode 100644
index 000000000..7887c51e0
--- /dev/null
+++ b/tests/test_llm_provider_hints.py
@@ -0,0 +1,12 @@
+from app.agent.llm.provider import LLMProviderManager
+
+
+def test_openai_compatible_provider_api_key_hint_only_describes_credentials() -> None:
+    """通用 OpenAI 兼容入口的 API Key 提示不应混入 Base URL 配置说明。"""
+    provider = LLMProviderManager().get_provider("openai")
+
+    assert provider.requires_base_url is True
+    assert provider.api_key_hint == (
+        "填写 OpenAI-compatible 服务的 API Key；如服务未启用鉴权，可填写任意占位值。"
+    )
+    assert "Base URL" not in provider.api_key_hint