diff --git a/open-sse/executors/default.ts b/open-sse/executors/default.ts
index 491ea48e75..3dd2ac39af 100644
--- a/open-sse/executors/default.ts
+++ b/open-sse/executors/default.ts
@@ -201,6 +201,10 @@ export class DefaultExecutor extends BaseExecutor {
         const baseUrl = credentials?.providerSpecificData?.baseUrl || this.config.baseUrl;
         return buildMaritalkChatUrl(baseUrl);
       }
+      case "siliconflow": {
+        const baseUrl = credentials?.providerSpecificData?.baseUrl || this.config.baseUrl;
+        return normalizeOpenAIChatUrl(baseUrl);
+      }
       case "lm-studio":
       case "modal":
       case "reka":
diff --git a/src/app/(dashboard)/dashboard/providers/[id]/page.tsx b/src/app/(dashboard)/dashboard/providers/[id]/page.tsx
index 44b672c032..4271047502 100644
--- a/src/app/(dashboard)/dashboard/providers/[id]/page.tsx
+++ b/src/app/(dashboard)/dashboard/providers/[id]/page.tsx
@@ -788,6 +788,7 @@ interface AddApiKeyModalProps {
   isOpen: boolean;
   provider?: string;
   providerName?: string;
+  initialBaseUrl?: string;
   isCompatible?: boolean;
   isAnthropic?: boolean;
   isCcCompatible?: boolean;
@@ -821,6 +822,11 @@ type CommandCodeAuthFlowState = {
   message?: string;
 };
 
+const SILICONFLOW_ENDPOINTS = [
+  { id: "siliconflow", label: "Global", baseUrl: "https://api.siliconflow.com/v1" },
+  { id: "siliconflow-cn", label: "China", baseUrl: "https://api.siliconflow.cn/v1" },
+] as const;
+
 interface EditConnectionModalConnection {
   id?: string;
   name?: string;
@@ -1361,6 +1367,8 @@ export default function ProviderDetailPage() {
   const [showOAuthModal, _setShowOAuthModal] = useState(false);
   const [reauthConnection, setReauthConnection] = useState<ConnectionRowConnection | null>(null);
   const [showAddApiKeyModal, setShowAddApiKeyModal] = useState(false);
+  const [showSiliconFlowEndpointModal, setShowSiliconFlowEndpointModal] = useState(false);
+  const [siliconFlowInitialBaseUrl, setSiliconFlowInitialBaseUrl] = useState<string | undefined>();
   const [showRiskNoticeModal, setShowRiskNoticeModal] = useState(false);
   const [commandCodeAuthState, setCommandCodeAuthState] = useState<CommandCodeAuthFlowState>({
     phase: "idle",
@@ -1959,13 +1967,21 @@ export default function ProviderDetailPage() {
     setShowOAuthModal(false);
   }, [fetchConnections]);
 
+  const openApiKeyAddFlow = useCallback(() => {
+    if (providerId === "siliconflow") {
+      setShowSiliconFlowEndpointModal(true);
+      return;
+    }
+    setShowAddApiKeyModal(true);
+  }, [providerId]);
+
   const openPrimaryAddFlow = useCallback(() => {
     if (isOAuth) {
       setShowOAuthModal(true);
       return;
     }
-    setShowAddApiKeyModal(true);
-  }, [isOAuth]);
+    openApiKeyAddFlow();
+  }, [isOAuth, openApiKeyAddFlow]);
 
   const gateConnectionFlow = useCallback(
     (callback: () => void) => {
@@ -2008,6 +2024,7 @@ export default function ProviderDetailPage() {
 
   const handleCloseAddApiKeyModal = useCallback(() => {
     clearCommandCodeAuthTimer();
+    setSiliconFlowInitialBaseUrl(undefined);
     commandCodeAuthWindowRef.current?.close?.();
     commandCodeAuthWindowRef.current = null;
     setCommandCodeAuthState({
@@ -2255,6 +2272,7 @@ export default function ProviderDetailPage() {
         const newConnection = connectionData?.connection;
         await fetchConnections();
         setShowAddApiKeyModal(false);
+        setSiliconFlowInitialBaseUrl(undefined);
 
         // For Gemini: show progress dialog and sync models from endpoint
         if (providerId === "gemini" && newConnection?.id) {
@@ -3915,11 +3933,7 @@ export default function ProviderDetailPage() {
               </p>
             </div>
             <div className="flex flex-wrap items-center gap-2">
-              <Button
-                size="sm"
-                icon="add"
-                onClick={() => gateConnectionFlow(() => setShowAddApiKeyModal(true))}
-              >
+              <Button size="sm" icon="add" onClick={() => gateConnectionFlow(openApiKeyAddFlow)}>
                 {t("add")}
               </Button>
               <Button
@@ -4091,7 +4105,7 @@ export default function ProviderDetailPage() {
                         size="sm"
                         variant="secondary"
                         icon="add"
-                        onClick={() => gateConnectionFlow(() => setShowAddApiKeyModal(true))}
+                        onClick={() => gateConnectionFlow(openApiKeyAddFlow)}
                       >
                         Manual API key
                       </Button>
@@ -4143,11 +4157,7 @@ export default function ProviderDetailPage() {
                 </>
               ) : (
                 connections.length === 0 && (
-                  <Button
-                    size="sm"
-                    icon="add"
-                    onClick={() => gateConnectionFlow(() => setShowAddApiKeyModal(true))}
-                  >
+                  <Button size="sm" icon="add" onClick={() => gateConnectionFlow(openApiKeyAddFlow)}>
                     {t("add")}
                   </Button>
                 )
@@ -4182,7 +4192,7 @@ export default function ProviderDetailPage() {
                       <Button
                         variant="secondary"
                         icon="add"
-                        onClick={() => gateConnectionFlow(() => setShowAddApiKeyModal(true))}
+                        onClick={() => gateConnectionFlow(openApiKeyAddFlow)}
                       >
                         Manual API key
                       </Button>
@@ -4710,11 +4720,26 @@ export default function ProviderDetailPage() {
             }}
           />
         ))}
+      {providerId === "siliconflow" && (
+        <SiliconFlowEndpointModal
+          isOpen={showSiliconFlowEndpointModal}
+          onSelect={(baseUrl) => {
+            setSiliconFlowInitialBaseUrl(baseUrl);
+            setShowSiliconFlowEndpointModal(false);
+            setShowAddApiKeyModal(true);
+          }}
+          onClose={() => {
+            setShowSiliconFlowEndpointModal(false);
+            setSiliconFlowInitialBaseUrl(undefined);
+          }}
+        />
+      )}
       {!isUpstreamProxyProvider && (
         <AddApiKeyModal
           isOpen={showAddApiKeyModal}
           provider={providerId}
           providerName={providerInfo.name}
+          initialBaseUrl={siliconFlowInitialBaseUrl}
           isCompatible={isCompatible}
           isAnthropic={isAnthropicProtocolCompatible}
           isCcCompatible={isCcCompatible}
@@ -7308,6 +7333,7 @@ const CONFIGURABLE_BASE_URL_PROVIDERS = new Set([
   "azure-ai",
   "bailian-coding-plan",
   "xiaomi-mimo",
+  "siliconflow",
   "heroku",
   "databricks",
   "snowflake",
@@ -7320,6 +7346,7 @@ const DEFAULT_PROVIDER_BASE_URLS: Record<string, string> = {
   "azure-ai": "https://example-resource.services.ai.azure.com/openai/v1",
   "bailian-coding-plan": "https://coding-intl.dashscope.aliyuncs.com/apps/anthropic/v1",
   "xiaomi-mimo": "https://token-plan-sgp.xiaomimimo.com/v1",
+  siliconflow: "https://api.siliconflow.com/v1",
   "searxng-search": "http://localhost:8888/search",
   petals: "https://chat.petals.dev/api/v1/generate",
 };
@@ -7385,6 +7412,8 @@ function getProviderBaseUrlPlaceholder(providerId?: string | null) {
     case "bailian-coding-plan":
     case "xiaomi-mimo":
       return getProviderBaseUrlDefault(providerId);
+    case "siliconflow":
+      return "https://api.siliconflow.cn/v1";
     case "heroku":
       return "https://us.inference.heroku.com";
     case "databricks":
@@ -7488,10 +7517,60 @@ function extractCommandCodeCredentialInput(value: string): string {
   return trimmed;
 }
 
+function SiliconFlowEndpointModal({
+  isOpen,
+  onSelect,
+  onClose,
+}: {
+  isOpen: boolean;
+  onSelect: (baseUrl: string) => void;
+  onClose: () => void;
+}) {
+  const t = useTranslations("providers");
+
+  return (
+    <Modal
+      isOpen={isOpen}
+      title={providerText(t, "connectSiliconFlow", "Connect SiliconFlow")}
+      onClose={onClose}
+      size="lg"
+    >
+      <div className="space-y-3">
+        <p className="text-sm text-text-muted mb-4">
+          {providerText(t, "chooseSiliconFlowEndpoint", "Choose your SiliconFlow endpoint:")}
+        </p>
+        {SILICONFLOW_ENDPOINTS.map((endpoint) => (
+          <button
+            key={endpoint.id}
+            type="button"
+            onClick={() => onSelect(endpoint.baseUrl)}
+            className="w-full p-4 text-left border border-border rounded-lg hover:bg-sidebar transition-colors"
+          >
+            <div className="flex items-start gap-3">
+              <span className="material-symbols-outlined text-primary mt-0.5">public</span>
+              <div className="flex-1">
+                <h3 className="font-semibold mb-1">
+                  {providerText(
+                    t,
+                    endpoint.id === "siliconflow" ? "endpointGlobal" : "endpointChina",
+                    endpoint.label
+                  )}
+                </h3>
+                <p className="text-sm text-text-muted font-mono">{endpoint.baseUrl}</p>
+              </div>
+            </div>
+          </button>
+        ))}
+      </div>
+    </Modal>
+  );
+}
+
 function AddApiKeyModal({
   isOpen,
   provider,
   providerName,
+  initialBaseUrl,
   isCompatible,
   isAnthropic,
   isCcCompatible,
@@ -7537,7 +7616,7 @@ function AddApiKeyModal({
     name: "",
     apiKey: "",
     priority: 1,
-    baseUrl: defaultBaseUrl,
+    baseUrl: initialBaseUrl || defaultBaseUrl,
     cx: "",
     region: showsRegion ? defaultRegion : "",
     apiRegion: "international",
@@ -7556,6 +7635,17 @@ function AddApiKeyModal({
   const [saveError, setSaveError] = useState<string | null>(null);
   const [showAdvanced, setShowAdvanced] = useState(false);
   const [copiedCommandCodeField, setCopiedCommandCodeField] = useState<string | null>(null);
+  const wasOpenRef = useRef(false);
+
+  useEffect(() => {
+    const wasOpen = wasOpenRef.current;
+    wasOpenRef.current = isOpen;
+    if (!isOpen || wasOpen) return;
+    setFormData((current) => ({
+      ...current,
+      baseUrl: initialBaseUrl || defaultBaseUrl,
+    }));
+  }, [defaultBaseUrl, initialBaseUrl, isOpen]);
 
   const bulkSupported = supportsBulkApiKey(provider);
   const [mode, setMode] = useState<"single" | "bulk">("single");
@@ -7770,6 +7860,16 @@ function AddApiKeyModal({
     setSaveError(null);
 
     try {
+      let providerSpecificData: Record<string, unknown> | undefined;
+      if (usesBaseUrl) {
+        const checked = normalizeAndValidateHttpBaseUrl(formData.baseUrl, defaultBaseUrl);
+        if (checked.error) {
+          setSaveError(checked.error);
+          return;
+        }
+        providerSpecificData = { baseUrl: checked.value };
+      }
+
       const res = await fetch("/api/providers/bulk", {
         method: "POST",
         headers: { "Content-Type": "application/json" },
@@ -7777,6 +7877,7 @@ function AddApiKeyModal({
           provider,
           entries: parsed.entries.map((e) => ({ name: e.name, apiKey: e.apiKey })),
           priority: formData.priority || 1,
+          providerSpecificData,
           validateKeys: bulkValidateKeys,
         }),
       });
diff --git a/tests/unit/executor-default-base.test.ts b/tests/unit/executor-default-base.test.ts
index ceb4cd2464..fcbf29474e 100644
--- a/tests/unit/executor-default-base.test.ts
+++ b/tests/unit/executor-default-base.test.ts
@@ -184,6 +184,7 @@ test("DefaultExecutor.buildUrl normalizes configurable chat-openai-compat base U
   const maritalk = new DefaultExecutor("maritalk");
   const snowflake = new DefaultExecutor("snowflake");
   const gigachat = new DefaultExecutor("gigachat");
+  const siliconflow = new DefaultExecutor("siliconflow");
 
   assert.equal(
     bailian.buildUrl("qwen3-coder-plus", true, 0, {
@@ -273,6 +274,16 @@ test("DefaultExecutor.buildUrl normalizes configurable chat-openai-compat base U
     }),
     "https://gigachat.devices.sberbank.ru/api/v1/chat/completions"
   );
+  assert.equal(
+    siliconflow.buildUrl("deepseek-ai/DeepSeek-V3.2", true),
+    "https://api.siliconflow.com/v1/chat/completions"
+  );
+  assert.equal(
+    siliconflow.buildUrl("deepseek-ai/DeepSeek-V3.2", true, 0, {
+      providerSpecificData: { baseUrl: "https://api.siliconflow.cn/v1" },
+    }),
+    "https://api.siliconflow.cn/v1/chat/completions"
+  );
 });
 
 test("DefaultExecutor.buildUrl falls back to OpenAI config for unknown providers", () => {