diff --git a/src/pages/AuthFileManagementPage.tsx b/src/pages/AuthFileManagementPage.tsx
index 1bab8bd..aa6d95b 100644
--- a/src/pages/AuthFileManagementPage.tsx
+++ b/src/pages/AuthFileManagementPage.tsx
@@ -69,6 +69,7 @@ import {
   parseAuthFilePriority,
   resetAuthFileCooldown,
   setOAuthCredentialFileDisabled,
+  sortAuthFilesByPriority,
 } from '../services/authFiles';
 import { authFileHealth, normalizeAuthFileCooldowns } from '../services/authFileHealth';
 import { codexMetadataFor } from '../services/quotaMetadata';
@@ -175,7 +176,7 @@ export function AuthFileManagementPage() {
     try {
       const payload = await managementApi.get('/credentials');
       if (!mountedRef.current || requestId !== fileRequestRef.current) return;
-      const nextFiles = dedupeAuthFiles(responseList(payload, 'files'));
+      const nextFiles = sortAuthFilesByPriority(dedupeAuthFiles(responseList(payload, 'files')));
       setFileSnapshot({ files: nextFiles, receivedAtMs: Date.now(), observedAt: readString(payload, 'observed_at') });
       const validQuotaKeys = new Set(nextFiles.map(quotaKey));
       pruneQuotaCache(validQuotaKeys);
diff --git a/src/pages/QuotaPage.tsx b/src/pages/QuotaPage.tsx
index 281ec70..f54a5bd 100644
--- a/src/pages/QuotaPage.tsx
+++ b/src/pages/QuotaPage.tsx
@@ -34,7 +34,7 @@ import {
   updateQuotaCache,
   useQuotaCache,
 } from '../services/quotaCache';
-import { dedupeAuthFiles } from '../services/authFiles';
+import { dedupeAuthFiles, parseAuthFilePriority, sortAuthFilesByPriority } from '../services/authFiles';
 import { useI18n } from '../i18n';
 import './QuotaPage.css';
 
@@ -65,7 +65,7 @@ export function QuotaPage() {
     setError('');
     try {
       const payload = await managementApi.get('/credentials');
-      const allFiles = dedupeAuthFiles(responseList(payload, 'files'));
+      const allFiles = sortAuthFilesByPriority(dedupeAuthFiles(responseList(payload, 'files')));
       const nextFiles = allFiles.filter((file) => !readBoolean(file, 'disabled') && providerForFile(file));
       setFiles(nextFiles);
       const validQuotaKeys = new Set(allFiles.map(quotaKey));
@@ -188,6 +188,7 @@ export function QuotaCard({ file, quota, onRefresh, onReset }: { file: AuthFile;
   const provider = providerForFile(file);
   const name = fileName(file);
   const disabled = readBoolean(file, 'disabled');
+  const priority = parseAuthFilePriority(file.priority) ?? 0;
   return (
     <article className="panel real-quota-card">
       <div className="real-quota-card-header">
@@ -196,7 +197,7 @@ export function QuotaCard({ file, quota, onRefresh, onReset }: { file: AuthFile;
           <div><strong title={name}>{name}</strong><span>{provider ? providerMeta[provider].label : t('quota.unknownProvider')}</span></div>
         </div>
         <div className="quota-plan"><strong>{quota.plan || '—'}</strong><span>{quota.subscriptionActiveUntil ? t('quota.expiresAt', { time: formatQuotaTimestamp(quota.subscriptionActiveUntil, locale) }) : ''}</span></div>
-        <div className="quota-status"><span className={quota.status === 'success' ? 'quota-status-badge ready' : quota.status === 'error' ? 'quota-status-badge error' : 'quota-status-badge'}>{quota.status === 'success' ? t('common.enabled') : quota.status === 'loading' ? t('quota.querying') : quota.status === 'error' ? t('common.unavailable') : t('quota.notFetched')}</span><small>{t('authFiles.settings.priority')} 0</small></div>
+        <div className="quota-status"><span className={quota.status === 'success' ? 'quota-status-badge ready' : quota.status === 'error' ? 'quota-status-badge error' : 'quota-status-badge'}>{quota.status === 'success' ? t('common.enabled') : quota.status === 'loading' ? t('quota.querying') : quota.status === 'error' ? t('common.unavailable') : t('quota.notFetched')}</span><small>{t('authFiles.settings.priority')} {priority}</small></div>
         <div className="quota-card-actions">
           <button type="button" className="icon-button quiet" onClick={onRefresh} disabled={disabled || quota.status === 'loading'} title={disabled ? t('quota.fileDisabled') : t('quota.refresh')} aria-label={disabled ? t('quota.fileDisabled') : t('quota.refresh')}><RefreshCw size={16} className={quota.status === 'loading' ? 'spin' : ''} aria-hidden="true" /></button>
         </div>
diff --git a/src/services/authFiles.ts b/src/services/authFiles.ts
index 9e2542c..6629b24 100644
--- a/src/services/authFiles.ts
+++ b/src/services/authFiles.ts
@@ -37,6 +37,19 @@ export const resetAuthFileCooldown = async (
 export const authFileName = (file: AuthFileRecord) =>
   readString(file, 'name') || translate(getCurrentLocale(), 'authFiles.unnamed');
 
+/**
+ * Present credentials in the same order used by routing: higher explicit
+ * priority first, then a deterministic case-insensitive filename order.
+ * Return a new array so callers do not mutate the API response or snapshots.
+ */
+export const sortAuthFilesByPriority = <File extends AuthFileRecord>(files: File[]): File[] =>
+  [...files].sort((left, right) => {
+    const priorityDelta = (parseAuthFilePriority(right.priority) ?? 0)
+      - (parseAuthFilePriority(left.priority) ?? 0);
+    if (priorityDelta !== 0) return priorityDelta;
+    return authFileName(left).localeCompare(authFileName(right), undefined, { sensitivity: 'base' });
+  });
+
 export const isRuntimeOnlyAuthFile = (file: AuthFileRecord) =>
   readBoolean(file, 'runtime_only', 'runtimeOnly');
 
diff --git a/tests/authFileQuotaPanel.test.tsx b/tests/authFileQuotaPanel.test.tsx
index 0eb7a33..3af4fbb 100644
--- a/tests/authFileQuotaPanel.test.tsx
+++ b/tests/authFileQuotaPanel.test.tsx
@@ -25,6 +25,28 @@ it('shows every reset expiry in chronological order, including duplicates, on bo
   }
 });
 
+it('shows the OAuth credential priority on the quota card', () => {
+  const html = renderToStaticMarkup(<I18nProvider><QuotaCard
+    file={{ name: 'priority.json', provider: 'codex', priority: 7 }}
+    quota={{ status: 'success', rows: [] }} onRefresh={() => {}}
+  /></I18nProvider>);
+  expect(html).toContain('Priority 7');
+  expect(html).not.toContain('Priority 0');
+});
+
+it('normalizes a string priority and keeps zero as the default', () => {
+  const stringPriority = renderToStaticMarkup(<I18nProvider><QuotaCard
+    file={{ name: 'priority.json', provider: 'codex', priority: '3' }}
+    quota={{ status: 'idle', rows: [] }} onRefresh={() => {}}
+  /></I18nProvider>);
+  const missingPriority = renderToStaticMarkup(<I18nProvider><QuotaCard
+    file={{ name: 'default.json', provider: 'codex' }}
+    quota={{ status: 'idle', rows: [] }} onRefresh={() => {}}
+  /></I18nProvider>);
+  expect(stringPriority).toContain('Priority 3');
+  expect(missingPriority).toContain('Priority 0');
+});
+
 it('renders real quota values with bounded bars and keeps unknown distinct from zero', () => {
   const html = render({ status: 'success', rows: [
     { label: 'empty', remainingPercent: 0 }, { label: 'full', remainingPercent: 100 },
diff --git a/tests/authFiles.test.ts b/tests/authFiles.test.ts
index 0e40b72..cad2f5e 100644
--- a/tests/authFiles.test.ts
+++ b/tests/authFiles.test.ts
@@ -9,6 +9,7 @@ import {
   oauthModelProvidersFromAuthFiles,
   parseAuthFilePriority,
   setOAuthCredentialFileDisabled,
+  sortAuthFilesByPriority,
   snapshotAuthFiles,
 } from '../src/services/authFiles';
 
@@ -181,6 +182,18 @@ describe('authentication file priority', () => {
     expect(normalizeAuthFilePriorityInput('1.5')).toBeNull();
   });
 
+  it('sorts credentials by descending priority, then filename', () => {
+    expect(sortAuthFilesByPriority([
+      { name: 'zeta.json', priority: 2 },
+      { name: 'Beta.json', priority: 5 },
+      { name: 'alpha.json', priority: 5 },
+      { name: 'default.json' },
+      { name: 'negative.json', priority: -1 },
+    ]).map((file) => file.name)).toEqual([
+      'alpha.json', 'Beta.json', 'zeta.json', 'default.json', 'negative.json',
+    ]);
+  });
+
   it('finds only credentials created or updated by the completed OAuth provider', () => {
     const before = snapshotAuthFiles([
       { name: 'codex-old.json', provider: 'codex', modtime: 1, priority: 8 },