diff --git a/packages/daemon/src/lib/agent/query-runner.ts b/packages/daemon/src/lib/agent/query-runner.ts
index e432f57b31..d28c9fcad9 100644
--- a/packages/daemon/src/lib/agent/query-runner.ts
+++ b/packages/daemon/src/lib/agent/query-runner.ts
@@ -521,7 +521,7 @@ export class QueryRunner {
 
         if (!hasAuth) {
           const authError = new Error(
-            'No authentication configured. Please set up API key for Anthropic or GLM.'
+            'No authentication configured. Please set up API key for Anthropic or Z.ai.'
           );
           await errorManager.handleError(
             session.id,
diff --git a/packages/daemon/src/lib/credential-discovery.ts b/packages/daemon/src/lib/credential-discovery.ts
index fa3f51feb7..773e9dafd6 100644
--- a/packages/daemon/src/lib/credential-discovery.ts
+++ b/packages/daemon/src/lib/credential-discovery.ts
@@ -154,7 +154,7 @@ const BUILT_IN_PROVIDER_ENV_MAP: BuiltInProviderEnvMapping[] = [
   },
   {
     providerId: 'glm',
-    displayName: 'GLM',
+    displayName: 'Z.ai',
     envVar: 'GLM_API_KEY',
     altEnvVar: 'ZHIPU_API_KEY',
     authType: 'api_key',
diff --git a/packages/daemon/src/lib/providers/glm-provider.ts b/packages/daemon/src/lib/providers/glm-provider.ts
index c0e23b0343..0a82352523 100644
--- a/packages/daemon/src/lib/providers/glm-provider.ts
+++ b/packages/daemon/src/lib/providers/glm-provider.ts
@@ -24,7 +24,8 @@ import { probeAnthropicCompatCredentials } from './shared/credential-probe.js';
  */
 export class GlmProvider implements Provider {
   readonly id = 'glm';
-  readonly displayName = 'GLM (智谱AI)';
+  // GLM is the model family; the provider/company is Zhipu AI, branded Z.ai.
+  readonly displayName = 'Z.ai';
 
   readonly capabilities: ProviderCapabilities = {
     streaming: true,
@@ -212,7 +213,7 @@ export class GlmProvider implements Provider {
       baseUrl,
       apiKey,
       model: 'glm-5-turbo',
-      providerName: 'GLM',
+      providerName: 'Z.ai',
       fetchImpl: this.fetchImpl,
     })
       .then(() => undefined)
@@ -269,7 +270,7 @@ export class GlmProvider implements Provider {
     // Get API key: session override > global env
     const apiKey = sessionConfig?.apiKey || this.getApiKey();
     if (!apiKey) {
-      throw new Error('GLM API key not configured');
+      throw new Error('Z.ai API key not configured');
     }
 
     // Get base URL: session override > default
diff --git a/packages/daemon/tests/online/glm/glm-provider.test.ts b/packages/daemon/tests/online/glm/glm-provider.test.ts
index 2abfad0fbd..d06b7933c1 100644
--- a/packages/daemon/tests/online/glm/glm-provider.test.ts
+++ b/packages/daemon/tests/online/glm/glm-provider.test.ts
@@ -1,5 +1,5 @@
 /**
- * Integration tests for GLM (智谱AI) provider support
+ * Integration tests for the Z.ai (智谱AI) provider (model family: GLM)
  *
  * Covers:
  * 1. ProviderService — GLM availability, provider listing, model defaults, provider switching
@@ -81,7 +81,7 @@ describe('GLM Provider Integration', () => {
       // Find GLM
       const glm = providers.find((p) => p.id === 'glm');
       expect(glm).toBeDefined();
-      expect(glm!.name).toBe('GLM (智谱AI)');
+      expect(glm!.name).toBe('Z.ai');
       // Note: baseUrl is now undefined in the new provider system (legacy field)
       expect(glm!.baseUrl).toBeUndefined();
     });
diff --git a/packages/daemon/tests/unit/1-core/providers/glm-provider.test.ts b/packages/daemon/tests/unit/1-core/providers/glm-provider.test.ts
index 0fe346114e..75777f433b 100644
--- a/packages/daemon/tests/unit/1-core/providers/glm-provider.test.ts
+++ b/packages/daemon/tests/unit/1-core/providers/glm-provider.test.ts
@@ -28,7 +28,7 @@ describe('GlmProvider', () => {
     });
 
     it('should have correct display name', () => {
-      expect(provider.displayName).toBe('GLM (智谱AI)');
+      expect(provider.displayName).toBe('Z.ai');
     });
 
     it('should have correct capabilities', () => {
@@ -142,7 +142,7 @@ describe('GlmProvider', () => {
       ) as unknown as typeof fetch;
       provider = new GlmProvider(process.env, fetchImpl);
 
-      expect(provider.getModels()).rejects.toThrow('GLM API key rejected (HTTP 401)');
+      expect(provider.getModels()).rejects.toThrow('Z.ai API key rejected (HTTP 401)');
     });
 
     it('throws when probe fails at the network layer', async () => {
@@ -152,7 +152,7 @@ describe('GlmProvider', () => {
       }) as unknown as typeof fetch;
       provider = new GlmProvider(process.env, fetchImpl);
 
-      expect(provider.getModels()).rejects.toThrow('GLM probe failed: ENOTFOUND');
+      expect(provider.getModels()).rejects.toThrow('Z.ai probe failed: ENOTFOUND');
     });
 
     it('caches successful probe for 30s so repeated calls do not re-probe', async () => {
@@ -372,7 +372,7 @@ describe('GlmProvider', () => {
       delete process.env.GLM_API_KEY;
       delete process.env.ZHIPU_API_KEY;
 
-      expect(() => provider.buildSdkConfig('glm-5')).toThrow('GLM API key not configured');
+      expect(() => provider.buildSdkConfig('glm-5')).toThrow('Z.ai API key not configured');
     });
   });
 
diff --git a/packages/shared/src/types.ts b/packages/shared/src/types.ts
index d868d819c0..7c6c459784 100644
--- a/packages/shared/src/types.ts
+++ b/packages/shared/src/types.ts
@@ -179,7 +179,7 @@ export type { RuntimeState } from './types/neo';
 /**
  * Supported AI providers
  * - 'anthropic': Default Claude API provider
- * - 'glm': GLM (智谱AI) via Anthropic-compatible API
+ * - 'glm': Z.ai (智谱AI) via Anthropic-compatible API
  * - 'minimax': MiniMax via Anthropic-compatible API
  * - 'kimi': Kimi (Moonshot AI) via Anthropic-compatible API
  * - 'openrouter': OpenRouter Anthropic-compatible API gateway
diff --git a/packages/web/src/components/settings/AddProviderModal.tsx b/packages/web/src/components/settings/AddProviderModal.tsx
index 06c8484f04..45079da502 100644
--- a/packages/web/src/components/settings/AddProviderModal.tsx
+++ b/packages/web/src/components/settings/AddProviderModal.tsx
@@ -58,7 +58,7 @@ const QUICK_ADD_PROVIDERS: BuiltInProviderPreset[] = [
   },
   {
     providerId: 'glm',
-    displayName: 'GLM',
+    displayName: 'Z.ai',
     authType: 'api_key',
     description: 'Zhipu AI models',
   },
diff --git a/packages/web/src/hooks/__tests__/useModelSwitcher.test.ts b/packages/web/src/hooks/__tests__/useModelSwitcher.test.ts
index 447f49b8bb..182413f65e 100644
--- a/packages/web/src/hooks/__tests__/useModelSwitcher.test.ts
+++ b/packages/web/src/hooks/__tests__/useModelSwitcher.test.ts
@@ -164,7 +164,7 @@ describe('useModelSwitcher', () => {
   describe('getProviderLabel', () => {
     it('should return correct label for known providers', () => {
       expect(getProviderLabel('anthropic')).toBe('Anthropic');
-      expect(getProviderLabel('glm')).toBe('GLM');
+      expect(getProviderLabel('glm')).toBe('Z.ai');
       expect(getProviderLabel('kimi')).toBe('Kimi');
       expect(getProviderLabel('minimax')).toBe('MiniMax');
       expect(getProviderLabel('openrouter')).toBe('OpenRouter');
diff --git a/packages/web/src/hooks/useModelSwitcher.ts b/packages/web/src/hooks/useModelSwitcher.ts
index 20fadb469e..5a41ee129a 100644
--- a/packages/web/src/hooks/useModelSwitcher.ts
+++ b/packages/web/src/hooks/useModelSwitcher.ts
@@ -244,7 +244,7 @@ export function groupModelsByProvider(models: ModelInfo[]): Map<string, ModelInf
 /** Provider display labels for UI */
 export const PROVIDER_LABELS: Record<string, string> = {
   anthropic: 'Anthropic',
-  glm: 'GLM',
+  glm: 'Z.ai',
   kimi: 'Kimi',
   minimax: 'MiniMax',
   openrouter: 'OpenRouter',
diff --git a/packages/web/src/lib/provider-brand.ts b/packages/web/src/lib/provider-brand.ts
index 6724fb8d82..b9492f0365 100644
--- a/packages/web/src/lib/provider-brand.ts
+++ b/packages/web/src/lib/provider-brand.ts
@@ -85,7 +85,7 @@ const AGGREGATOR_PROVIDERS = new Set(['openrouter']);
 // "(free)", "(preview)", or "(1M context)" that disambiguate models.
 const KNOWN_PROVIDER_LABELS = [
   'Anthropic',
-  'GLM',
+  'Z.ai',
   'Kimi',
   'MiniMax',
   'OpenRouter',