diff --git a/packages/core/src/core/openaiContentGenerator/provider/dashscope.test.ts b/packages/core/src/core/openaiContentGenerator/provider/dashscope.test.ts
index 03761133a64..3becf07f18e 100644
--- a/packages/core/src/core/openaiContentGenerator/provider/dashscope.test.ts
+++ b/packages/core/src/core/openaiContentGenerator/provider/dashscope.test.ts
@@ -164,6 +164,92 @@ describe('DashScopeOpenAICompatibleProvider', () => {
       expect(result).toBe(true);
     });
 
+    it('should return true for internal alibaba-inc.com subdomain', () => {
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://gateway.alibaba-inc.com/dashscope/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+      expect(result).toBe(true);
+      expect(mockDebugLogger.debug).toHaveBeenCalledWith(
+        'DashScope provider activated via internal origin: gateway.alibaba-inc.com',
+      );
+    });
+
+    it('should return true for internal aliyun-inc.com subdomain', () => {
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://model-gateway.aliyun-inc.com/dashscope/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+      expect(result).toBe(true);
+    });
+
+    it('should return true for multi-level internal subdomain', () => {
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://a.b.alibaba-inc.com/dashscope/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+      expect(result).toBe(true);
+    });
+
+    it('should return true for port-bearing internal URL', () => {
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://gateway.alibaba-inc.com:8443/dashscope/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+      expect(result).toBe(true);
+    });
+
+    it('should return false for bare alibaba-inc.com domain', () => {
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://alibaba-inc.com/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+      expect(result).toBe(false);
+    });
+
+    it('should return false for bare aliyun-inc.com domain', () => {
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://aliyun-inc.com/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+      expect(result).toBe(false);
+    });
+
+    it('should return false for lookalike internal domains without dot boundary', () => {
+      const configs = [
+        'https://notalibaba-inc.com/v1',
+        'https://notaliyun-inc.com/v1',
+        'https://alibaba-inc.com.evil.com/v1',
+        'https://aliyun-inc.com.evil.com/v1',
+      ];
+
+      configs.forEach((baseUrl) => {
+        const result = DashScopeOpenAICompatibleProvider.isDashScopeProvider({
+          authType: AuthType.USE_OPENAI,
+          baseUrl,
+        } as ContentGeneratorConfig);
+        expect(result).toBe(false);
+      });
+    });
+
     it('should return false for non-DashScope configurations', () => {
       const configs = [
         {
@@ -275,6 +361,31 @@ describe('DashScopeOpenAICompatibleProvider', () => {
       );
     });
 
+    it('should log internal-origin activation instead of proxy mismatch for internal domains', () => {
+      vi.stubEnv(
+        'DASHSCOPE_PROXY_BASE_URL',
+        'https://your-proxy.com/dashscope',
+      );
+
+      const config = {
+        authType: AuthType.USE_OPENAI,
+        baseUrl: 'https://gateway.alibaba-inc.com/dashscope/v1',
+      } as ContentGeneratorConfig;
+
+      const result =
+        DashScopeOpenAICompatibleProvider.isDashScopeProvider(config);
+
+      expect(result).toBe(true);
+      expect(mockDebugLogger.debug).toHaveBeenCalledWith(
+        'DashScope provider activated via internal origin: gateway.alibaba-inc.com',
+      );
+      expect(mockDebugLogger.debug).not.toHaveBeenCalledWith(
+        expect.stringContaining(
+          'DASHSCOPE_PROXY_BASE_URL is configured but the request baseUrl does not match',
+        ),
+      );
+    });
+
     it('should return true when baseUrl matches DASHSCOPE_PROXY_BASE_URL with trailing slash', () => {
       vi.stubEnv(
         'DASHSCOPE_PROXY_BASE_URL',
diff --git a/packages/core/src/core/openaiContentGenerator/provider/dashscope.ts b/packages/core/src/core/openaiContentGenerator/provider/dashscope.ts
index 8f0e2dfe2da..644232b58b5 100644
--- a/packages/core/src/core/openaiContentGenerator/provider/dashscope.ts
+++ b/packages/core/src/core/openaiContentGenerator/provider/dashscope.ts
@@ -29,6 +29,16 @@ export class DashScopeOpenAICompatibleProvider extends DefaultOpenAICompatiblePr
     super(contentGeneratorConfig, cliConfig);
   }
 
+  /**
+   * Determines whether to use the DashScope-compatible provider.
+   * Covers dashscope.aliyuncs.com, dashscope-intl.aliyuncs.com,
+   * internal Alibaba domains (*.alibaba-inc.com, *.aliyun-inc.com),
+   * and proxy matches.
+   *
+   * Note: any *.alibaba-inc.com / *.aliyun-inc.com host is treated as a
+   * DashScope-compatible endpoint by design. Keep this generic and avoid
+   * embedding individual private gateway hostnames in provider detection.
+   */
   static isDashScopeProvider(
     contentGeneratorConfig: ContentGeneratorConfig,
   ): boolean {
@@ -60,6 +70,13 @@ export class DashScopeOpenAICompatibleProvider extends DefaultOpenAICompatiblePr
         hostname.endsWith('.dashscope.aliyuncs.com') ||
         hostname.endsWith('.dashscope-intl.aliyuncs.com'));
 
+    // Internal Alibaba domains proxying to DashScope-compatible APIs.
+    // Covers *.alibaba-inc.com and *.aliyun-inc.com.
+    const isInternalOrigin =
+      hostname !== null &&
+      (hostname.endsWith('.alibaba-inc.com') ||
+        hostname.endsWith('.aliyun-inc.com'));
+
     // Check if proxy is configured and matches
     const normalizedProxyUrl = DASHSCOPE_PROXY_BASE_URL?.endsWith('/')
       ? DASHSCOPE_PROXY_BASE_URL.slice(0, -1)
@@ -70,13 +87,24 @@ export class DashScopeOpenAICompatibleProvider extends DefaultOpenAICompatiblePr
         normalizedBaseUrl.toLowerCase() === normalizedProxyUrl.toLowerCase(),
     );
 
-    if (normalizedProxyUrl && !isDashscopeOrigin && !isProxyMatch) {
+    if (
+      normalizedProxyUrl &&
+      !isDashscopeOrigin &&
+      !isInternalOrigin &&
+      !isProxyMatch
+    ) {
       debugLogger.debug(
         `DASHSCOPE_PROXY_BASE_URL is configured but the request baseUrl does not match. DashScope headers/cache control will be skipped.`,
       );
     }
 
-    return isDashscopeOrigin || isProxyMatch;
+    if (isInternalOrigin) {
+      debugLogger.debug(
+        `DashScope provider activated via internal origin: ${hostname}`,
+      );
+    }
+
+    return isDashscopeOrigin || isInternalOrigin || isProxyMatch;
   }
 
   override buildHeaders(): Record<string, string | undefined> {