diff --git a/apps/admin-web/src/api/adminApiTypes.ts b/apps/admin-web/src/api/adminApiTypes.ts
index 01e99ed10..70faa20f9 100644
--- a/apps/admin-web/src/api/adminApiTypes.ts
+++ b/apps/admin-web/src/api/adminApiTypes.ts
@@ -1075,16 +1075,16 @@ export interface AdminRechargeRefundActionResponse {
 export interface AdminWalletRestrictionResponse {
   wallet: AdminProfileWalletPayload;
 }
+/** AGC 平台模型目录项：`model` 就是上游原始模型名。 */
 export interface AdminAgcModel {
-  id: string;
-  alias: string;
-  modelId: string;
+  model: string;
   enabled: boolean;
 }
 
+/** AGC 平台模型目录：开放给客户端的模型、启用状态与默认项。 */
 export interface AdminAgcModelCatalog {
   revision: number;
-  defaultModelId: string;
+  defaultModel: string;
   models: AdminAgcModel[];
 }
 
diff --git a/apps/admin-web/src/pages/AdminAgcModelsPage.test.tsx b/apps/admin-web/src/pages/AdminAgcModelsPage.test.tsx
index bb88b9de6..94c718046 100644
--- a/apps/admin-web/src/pages/AdminAgcModelsPage.test.tsx
+++ b/apps/admin-web/src/pages/AdminAgcModelsPage.test.tsx
@@ -25,13 +25,11 @@ vi.mock('../components/useAdminWriteConfirm', () => ({
 }));
 afterEach(cleanup);
 
-test('edits alias and upstream model without changing the stable identifier or revision', async () => {
+test('renames a model name while keeping revision and row order', async () => {
   const catalog = {
     revision: 3,
-    defaultModelId: 'quality',
-    models: [
-      { id: 'quality', alias: '高质量', modelId: 'gpt-6-astra', enabled: true },
-    ],
+    defaultModel: 'gpt-5.6-sol',
+    models: [{ model: 'gpt-5.6-sol', enabled: true }],
   };
   vi.mocked(getAgcModelCatalog).mockResolvedValue(catalog);
   vi.mocked(saveAgcModelCatalog).mockImplementation(async (_, input) => ({
@@ -39,18 +37,56 @@ test('edits alias and upstream model without changing the stable identifier or r
     revision: 4,
   }));
   render(<AdminAgcModelsPage token="test" onUnauthorized={vi.fn()} />);
-  await screen.findByDisplayValue('gpt-6-astra');
-  fireEvent.change(screen.getByLabelText('模型 1 别名'), {
-    target: { value: '精细创作' },
+  await screen.findByDisplayValue('gpt-5.6-sol');
+  fireEvent.change(screen.getByLabelText('模型 1 模型名'), {
+    target: { value: 'gpt-5.6-terra' },
   });
   fireEvent.click(screen.getByRole('button', { name: '保存' }));
   await waitFor(() =>
     expect(saveAgcModelCatalog).toHaveBeenCalledWith('test', {
-      ...catalog,
-      models: [{ ...catalog.models[0], alias: '精细创作' }],
+      revision: 3,
+      defaultModel: 'gpt-5.6-terra',
+      models: [{ model: 'gpt-5.6-terra', enabled: true }],
     }),
   );
   await waitFor(() => {
     expect(screen.getAllByText('已保存').length).toBeGreaterThanOrEqual(2);
   });
 });
+
+test('keeps the default model on the renamed row and appends an enabled blank row', async () => {
+  const catalog = {
+    revision: 3,
+    defaultModel: 'gpt-5.6-sol',
+    models: [
+      { model: 'gpt-5.6-sol', enabled: true },
+      { model: 'gpt-5.6-luna', enabled: true },
+    ],
+  };
+  vi.mocked(getAgcModelCatalog).mockResolvedValue(catalog);
+  vi.mocked(saveAgcModelCatalog).mockImplementation(async (_, input) => input);
+  render(<AdminAgcModelsPage token="test" onUnauthorized={vi.fn()} />);
+  await screen.findByDisplayValue('gpt-5.6-luna');
+
+  fireEvent.click(screen.getByLabelText('模型 2 默认'));
+  fireEvent.change(screen.getByLabelText('模型 2 模型名'), {
+    target: { value: 'gpt-5.6-verda' },
+  });
+  fireEvent.click(screen.getByRole('button', { name: '添加模型' }));
+  fireEvent.change(screen.getByLabelText('模型 3 模型名'), {
+    target: { value: 'gpt-5.6-nova' },
+  });
+  fireEvent.click(screen.getByRole('button', { name: '保存' }));
+
+  await waitFor(() =>
+    expect(saveAgcModelCatalog).toHaveBeenCalledWith('test', {
+      revision: 3,
+      defaultModel: 'gpt-5.6-verda',
+      models: [
+        { model: 'gpt-5.6-sol', enabled: true },
+        { model: 'gpt-5.6-verda', enabled: true },
+        { model: 'gpt-5.6-nova', enabled: true },
+      ],
+    }),
+  );
+});
diff --git a/apps/admin-web/src/pages/AdminAgcModelsPage.tsx b/apps/admin-web/src/pages/AdminAgcModelsPage.tsx
index 2a3618fc1..150fedb1b 100644
--- a/apps/admin-web/src/pages/AdminAgcModelsPage.tsx
+++ b/apps/admin-web/src/pages/AdminAgcModelsPage.tsx
@@ -2,7 +2,7 @@ import { CircleHelp, Plus, RefreshCcw, Save, Trash2 } from 'lucide-react';
 import { useEffect, useState } from 'react';
 
 import { getAgcModelCatalog, saveAgcModelCatalog } from '../api/adminApiClient';
-import type { AdminAgcModel, AdminAgcModelCatalog } from '../api/adminApiTypes';
+import type { AdminAgcModelCatalog } from '../api/adminApiTypes';
 import { useAdminWriteConfirm } from '../components/useAdminWriteConfirm';
 import { handlePageError } from './pageUtils';
 
@@ -38,19 +38,38 @@ export function AdminAgcModelsPage({
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [token]);
 
-  function update(id: string, patch: Partial<AdminAgcModel>) {
+  /** 目录项没有稳定标识，一律按下标定位。 */
+  function setEnabled(index: number, enabled: boolean) {
     setSaved(false);
     setCatalog(
       (current) =>
         current && {
           ...current,
-          models: current.models.map((model) =>
-            model.id === id ? { ...model, ...patch } : model,
+          models: current.models.map((model, candidate) =>
+            candidate === index ? { ...model, enabled } : model,
           ),
         },
     );
   }
 
+  /** 重命名默认项时必须同步默认模型名，否则服务端会因默认项不在目录中而拒绝保存。 */
+  function renameModel(index: number, model: string) {
+    setSaved(false);
+    setCatalog(
+      (current) =>
+        current && {
+          ...current,
+          models: current.models.map((entry, candidate) =>
+            candidate === index ? { ...entry, model } : entry,
+          ),
+          defaultModel:
+            current.models[index]?.model === current.defaultModel
+              ? model
+              : current.defaultModel,
+        },
+    );
+  }
+
   async function save() {
     if (!catalog || busy) return;
     if (
@@ -78,7 +97,7 @@ export function AdminAgcModelsPage({
       <div className="admin-page-heading">
         <div>
           <h2>AGC 模型</h2>
-          <p>管理客户端可用模型与用户看到的名称</p>
+          <p>维护平台开放给客户端的模型、启用状态与默认项</p>
         </div>
         <span className="admin-agc-models-revision">
           版本 v{catalog?.revision ?? '-'}
@@ -93,13 +112,7 @@ export function AdminAgcModelsPage({
         </div>
         <div>
           <span>默认模型</span>
-          <strong>
-            {catalog
-              ? (catalog.models.find(
-                  (model) => model.id === catalog.defaultModelId,
-                )?.alias ?? '未设置')
-              : '未设置'}
-          </strong>
+          <strong>{catalog?.defaultModel || '未设置'}</strong>
         </div>
         <div>
           <span>发布状态</span>
@@ -110,7 +123,9 @@ export function AdminAgcModelsPage({
         <div className="admin-panel-heading">
           <div>
             <h3>模型目录</h3>
-            <span>客户端仅显示别名，实际模型名仅在这里维护</span>
+            <span>
+              目录初始值由服务端启动时从上游同步，这里维护平台开放给客户端的模型、启用状态与默认项
+            </span>
           </div>
           <CircleHelp size={17} aria-label="模型目录帮助" />
         </div>
@@ -135,15 +150,7 @@ export function AdminAgcModelsPage({
                 (current) =>
                   current && {
                     ...current,
-                    models: [
-                      ...current.models,
-                      {
-                        id: crypto.randomUUID(),
-                        alias: '',
-                        modelId: '',
-                        enabled: true,
-                      },
-                    ],
+                    models: [...current.models, { model: '', enabled: true }],
                   },
               );
             }}
@@ -166,85 +173,80 @@ export function AdminAgcModelsPage({
           <table className="admin-table admin-agc-models-table-grid">
             <thead>
               <tr>
-                <th>别名</th>
-                <th>实际模型名</th>
+                <th>模型名</th>
                 <th>启用</th>
                 <th>默认</th>
                 <th>操作</th>
               </tr>
             </thead>
             <tbody>
-              {catalog?.models.map((model, index) => (
-                <tr key={model.id}>
-                  <td>
-                    <input
-                      aria-label={`模型 ${index + 1} 别名`}
-                      maxLength={40}
-                      required
-                      value={model.alias}
-                      disabled={busy}
-                      onChange={(e) =>
-                        update(model.id, { alias: e.target.value })
-                      }
-                    />
-                  </td>
-                  <td>
-                    <input
-                      aria-label={`模型 ${index + 1} 实际模型名`}
-                      maxLength={200}
-                      required
-                      value={model.modelId}
-                      disabled={busy}
-                      onChange={(e) =>
-                        update(model.id, { modelId: e.target.value })
-                      }
-                    />
-                  </td>
-                  <td>
-                    <input
-                      aria-label={`模型 ${index + 1} 启用`}
-                      type="checkbox"
-                      checked={model.enabled}
-                      disabled={busy || model.id === catalog.defaultModelId}
-                      onChange={(e) =>
-                        update(model.id, { enabled: e.target.checked })
-                      }
-                    />
-                  </td>
-                  <td>
-                    <input
-                      aria-label={`模型 ${index + 1} 默认`}
-                      name="agc-default-model"
-                      type="radio"
-                      checked={model.id === catalog.defaultModelId}
-                      disabled={busy || !model.enabled}
-                      onChange={() => {
-                        setSaved(false);
-                        setCatalog({ ...catalog, defaultModelId: model.id });
-                      }}
-                    />
-                  </td>
-                  <td>
-                    <button
-                      type="button"
-                      title="删除模型"
-                      aria-label={`删除模型 ${index + 1}`}
-                      disabled={busy || model.id === catalog.defaultModelId}
-                      onClick={() => {
-                        setSaved(false);
-                        setCatalog({
-                          ...catalog,
-                          models: catalog.models.filter(
-                            (candidate) => candidate.id !== model.id,
-                          ),
-                        });
-                      }}
-                    >
-                      <Trash2 size={16} />
-                    </button>
-                  </td>
-                </tr>
-              ))}
+              {catalog?.models.map((model, index) => {
+                const isDefault = catalog.defaultModel === model.model;
+                return (
+                  <tr key={index}>
+                    <td>
+                      <input
+                        aria-label={`模型 ${index + 1} 模型名`}
+                        maxLength={200}
+                        required
+                        value={model.model}
+                        disabled={busy}
+                        onChange={(e) => renameModel(index, e.target.value)}
+                      />
+                    </td>
+                    <td>
+                      <input
+                        aria-label={`模型 ${index + 1} 启用`}
+                        type="checkbox"
+                        checked={model.enabled}
+                        disabled={busy || isDefault}
+                        onChange={(e) => setEnabled(index, e.target.checked)}
+                      />
+                    </td>
+                    <td>
+                      <input
+                        aria-label={`模型 ${index + 1} 默认`}
+                        name="agc-default-model"
+                        type="radio"
+                        checked={isDefault}
+                        disabled={busy || !model.enabled}
+                        onChange={() => {
+                          setSaved(false);
+                          setCatalog(
+                            (current) =>
+                              current && {
+                                ...current,
+                                defaultModel: model.model,
+                              },
+                          );
+                        }}
+                      />
+                    </td>
+                    <td>
+                      <button
+                        type="button"
+                        title="删除模型"
+                        aria-label={`删除模型 ${index + 1}`}
+                        disabled={busy || isDefault}
+                        onClick={() => {
+                          setSaved(false);
+                          setCatalog(
+                            (current) =>
+                              current && {
+                                ...current,
+                                models: current.models.filter(
+                                  (_, candidate) => candidate !== index,
+                                ),
+                              },
+                          );
+                        }}
+                      >
+                        <Trash2 size={16} />
+                      </button>
+                    </td>
+                  </tr>
+                );
+              })}
             </tbody>
           </table>
         </div>
diff --git a/apps/admin-web/src/styles/admin.css b/apps/admin-web/src/styles/admin.css
index 2198adbdf..5026f941a 100644
--- a/apps/admin-web/src/styles/admin.css
+++ b/apps/admin-web/src/styles/admin.css
@@ -3816,7 +3816,7 @@ button:disabled {
   color: #fff;
 }
 .admin-agc-models-table-grid {
-  min-width: 720px;
+  min-width: 540px;
 }
 .admin-agc-models-table-grid th {
   padding-top: 12px;