diff --git a/src/main/rate-limits/grok-auth.test.ts b/src/main/rate-limits/grok-auth.test.ts
index 793e3e7a694..7bf8f9e62b3 100644
--- a/src/main/rate-limits/grok-auth.test.ts
+++ b/src/main/rate-limits/grok-auth.test.ts
@@ -45,4 +45,112 @@ describe('readGrokAuthSession', () => {
       error: 'Grok auth file is invalid'
     })
   })
+
+  it.each(['https://auth.x.ai', 'https://auth.x.ai::client'])(
+    'prefers the %s issuer entry over an earlier alternate issuer',
+    async (preferredIssuer) => {
+      vi.doMock('node:fs', () => ({
+        existsSync: vi.fn(() => true),
+        readFileSync: vi.fn(() =>
+          JSON.stringify({
+            'https://stale.example.com::client': {
+              key: 'stale-token',
+              user_id: 'stale-user',
+              email: 'stale@example.com',
+              expires_at: '2099-01-01T00:00:00.000Z'
+            },
+            [preferredIssuer]: {
+              key: 'live-token',
+              user_id: 'live-user',
+              email: 'live@example.com',
+              team_id: 'team-1',
+              expires_at: '2099-06-01T00:00:00.000Z',
+              oidc_client_id: 'client-1'
+            }
+          })
+        )
+      }))
+      const { readGrokAuthSession } = await import('./grok-auth')
+
+      expect(readGrokAuthSession()).toEqual({
+        status: 'ok',
+        session: {
+          accessToken: 'live-token',
+          userId: 'live-user',
+          email: 'live@example.com',
+          teamId: 'team-1',
+          expiresAtMs: Date.parse('2099-06-01T00:00:00.000Z'),
+          oidcClientId: 'client-1'
+        }
+      })
+    }
+  )
+
+  it('falls back to the first tokenized entry when no auth.x.ai key exists', async () => {
+    vi.doMock('node:fs', () => ({
+      existsSync: vi.fn(() => true),
+      readFileSync: vi.fn(() =>
+        JSON.stringify({
+          'https://alternate.example.com::client': {
+            key: 'alt-token',
+            user_id: 'alt-user',
+            email: 'alt@example.com',
+            expires_at: '2099-01-01T00:00:00.000Z'
+          }
+        })
+      )
+    }))
+    const { readGrokAuthSession } = await import('./grok-auth')
+
+    expect(readGrokAuthSession()).toEqual({
+      status: 'ok',
+      session: {
+        accessToken: 'alt-token',
+        userId: 'alt-user',
+        email: 'alt@example.com',
+        teamId: null,
+        expiresAtMs: Date.parse('2099-01-01T00:00:00.000Z'),
+        oidcClientId: null
+      }
+    })
+  })
+
+  it('skips an expired auth.x.ai client entry when a fresh one follows it', async () => {
+    vi.doMock('node:fs', () => ({
+      existsSync: vi.fn(() => true),
+      readFileSync: vi.fn(() =>
+        JSON.stringify({
+          'https://auth.x.ai::old-client': {
+            key: 'expired-token',
+            expires_at: '2020-01-01T00:00:00.000Z'
+          },
+          'https://auth.x.ai::current-client': {
+            key: 'fresh-token',
+            expires_at: '2099-01-01T00:00:00.000Z'
+          }
+        })
+      )
+    }))
+    const { readGrokAuthSession } = await import('./grok-auth')
+
+    expect(readGrokAuthSession()).toMatchObject({
+      status: 'ok',
+      session: { accessToken: 'fresh-token' }
+    })
+  })
+
+  it('does not resurrect an alternate issuer when an auth.x.ai entry is tokenless', async () => {
+    vi.doMock('node:fs', () => ({
+      existsSync: vi.fn(() => true),
+      readFileSync: vi.fn(() =>
+        JSON.stringify({
+          'https://alternate.example.com::client': { key: 'stale-token' },
+          'https://auth.x.ai::client': { user_id: 'signed-out-user' }
+        })
+      )
+    }))
+    const { readGrokAuthSession } = await import('./grok-auth')
+
+    expect(readGrokAuthSession()).toEqual({ status: 'missing' })
+  })
 })
diff --git a/src/main/rate-limits/grok-auth.ts b/src/main/rate-limits/grok-auth.ts
index 10ba629ff34..e055c022975 100644
--- a/src/main/rate-limits/grok-auth.ts
+++ b/src/main/rate-limits/grok-auth.ts
@@ -29,6 +29,8 @@ type GrokAuthEntry = {
   oidc_client_id?: string
 }
 
+type TokenizedGrokAuthEntry = GrokAuthEntry & { key: string }
+
 export type GrokAuthReadResult =
   | { status: 'missing' }
   | { status: 'error'; error: string }
@@ -43,7 +45,7 @@ function getGrokAuthReadError(err: unknown): string {
   return 'Unable to read Grok auth file'
 }
 
-function parseAuthEntry(value: unknown): GrokAuthEntry | null {
+function parseAuthEntry(value: unknown): TokenizedGrokAuthEntry | null {
   if (typeof value !== 'object' || value === null) {
     return null
   }
@@ -51,7 +53,7 @@ function parseAuthEntry(value: unknown): GrokAuthEntry | null {
   if (typeof entry.key !== 'string' || entry.key.length === 0) {
     return null
   }
-  return entry
+  return entry as TokenizedGrokAuthEntry
 }
 
 function parseExpiresAtMs(iso: string | undefined): number | null {
@@ -62,6 +64,24 @@ function parseExpiresAtMs(iso: string | undefined): number | null {
   return Number.isFinite(ms) ? ms : null
 }
 
+// Why: stale alternate issuers can precede the default xAI OAuth session in auth.json.
+const PREFERRED_GROK_AUTH_ISSUER = 'https://auth.x.ai'
+
+function sessionFromAuthEntry(authEntry: TokenizedGrokAuthEntry): GrokAuthSession {
+  return {
+    accessToken: authEntry.key,
+    userId: typeof authEntry.user_id === 'string' ? authEntry.user_id : null,
+    email: typeof authEntry.email === 'string' ? authEntry.email : null,
+    teamId: typeof authEntry.team_id === 'string' ? authEntry.team_id : null,
+    expiresAtMs: parseExpiresAtMs(authEntry.expires_at),
+    oidcClientId: typeof authEntry.oidc_client_id === 'string' ? authEntry.oidc_client_id : null
+  }
+}
+
+function isPreferredGrokAuthKey(key: string): boolean {
+  return key === PREFERRED_GROK_AUTH_ISSUER || key.startsWith(`${PREFERRED_GROK_AUTH_ISSUER}::`)
+}
+
 export function readGrokAuthSession(): GrokAuthReadResult {
   const path = getGrokAuthPath()
   if (!existsSync(path)) {
@@ -72,23 +92,32 @@ export function readGrokAuthSession(): GrokAuthReadResult {
     if (typeof parsed !== 'object' || parsed === null) {
       return { status: 'error', error: 'Grok auth file is invalid' }
     }
-    for (const entry of Object.values(parsed)) {
+    let preferredKeySeen = false
+    let expiredPreferred: GrokAuthSession | null = null
+    let fallback: GrokAuthSession | null = null
+    for (const [key, entry] of Object.entries(parsed as Record<string, unknown>)) {
+      const isPreferred = isPreferredGrokAuthKey(key)
+      preferredKeySeen ||= isPreferred
       const authEntry = parseAuthEntry(entry)
-      if (!authEntry?.key) {
+      if (!authEntry) {
         continue
       }
-      return {
-        status: 'ok',
-        session: {
-          accessToken: authEntry.key,
-          userId: typeof authEntry.user_id === 'string' ? authEntry.user_id : null,
-          email: typeof authEntry.email === 'string' ? authEntry.email : null,
-          teamId: typeof authEntry.team_id === 'string' ? authEntry.team_id : null,
-          expiresAtMs: parseExpiresAtMs(authEntry.expires_at),
-          oidcClientId:
-            typeof authEntry.oidc_client_id === 'string' ? authEntry.oidc_client_id : null
+      const session = sessionFromAuthEntry(authEntry)
+      if (isPreferred) {
+        if (isGrokAccessTokenFresh(session)) {
+          return { status: 'ok', session }
         }
+        expiredPreferred ??= session
+        continue
       }
+      if (!fallback) {
+        fallback = session
+      }
+    }
+    // Why: alternate issuers are compatibility fallbacks only when no default entry exists.
+    const selectedSession = expiredPreferred ?? (preferredKeySeen ? null : fallback)
+    if (selectedSession) {
+      return { status: 'ok', session: selectedSession }
     }
     // Why: a token-less file (e.g. after grok logout) means signed out, not a
     // failure — 'error' would keep a status-bar alert visible for that user.
diff --git a/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.test.ts b/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.test.ts
index efdac51caef..185cc6460e6 100644
--- a/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.test.ts
+++ b/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.test.ts
@@ -1,4 +1,9 @@
 import { beforeEach, describe, expect, it, vi } from 'vitest'
+import en from '@/i18n/locales/en.json'
+import es from '@/i18n/locales/es.json'
+import ja from '@/i18n/locales/ja.json'
+import ko from '@/i18n/locales/ko.json'
+import zh from '@/i18n/locales/zh.json'
 import { OSC52_CLIPBOARD_SETTING_ID } from './osc52-clipboard-setting-anchor'
 import type * as Osc52ClipboardBlockedToastModule from './osc52-clipboard-blocked-toast'
 
@@ -41,6 +46,7 @@ describe('showOsc52ClipboardBlockedToast', () => {
 
     showOsc52ClipboardBlockedToast()
 
+    expect(toastInfoMock.mock.calls[0]?.[1]?.description).toContain('Grok')
     const options = toastInfoMock.mock.calls[0]?.[1]
     expect(options).toMatchObject({
       action: {
@@ -67,4 +73,14 @@ describe('showOsc52ClipboardBlockedToast', () => {
 
     expect(toastInfoMock).toHaveBeenCalledTimes(1)
   })
+
+  it('mentions Grok in every supported locale', () => {
+    const locales = [en, es, ja, ko, zh]
+
+    for (const locale of locales) {
+      expect(
+        locale.auto.components.terminal.pane.osc52.clipboard.blocked.toast['7cf51f74fd']
+      ).toContain('Grok')
+    }
+  })
 })
diff --git a/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.ts b/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.ts
index 127f40f7a99..fb0b5d73a60 100644
--- a/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.ts
+++ b/src/renderer/src/components/terminal-pane/osc52-clipboard-blocked-toast.ts
@@ -19,7 +19,7 @@ export function showOsc52ClipboardBlockedToast(): void {
     {
       description: translate(
         'auto.components.terminal.pane.osc52.clipboard.blocked.toast.7cf51f74fd',
-        'Enable TUI clipboard writes in Terminal settings to copy from SSH, tmux, Neovim, or fzf.'
+        'Enable TUI clipboard writes in Terminal settings to copy from SSH, tmux, Neovim, fzf, or Grok.'
       ),
       duration: 12_000,
       action: {
diff --git a/src/renderer/src/i18n/locales/en.json b/src/renderer/src/i18n/locales/en.json
index c89567567d0..6030a8a47a8 100644
--- a/src/renderer/src/i18n/locales/en.json
+++ b/src/renderer/src/i18n/locales/en.json
@@ -2581,7 +2581,7 @@
               "blocked": {
                 "toast": {
                   "97c98f1afe": "Open Setting",
-                  "7cf51f74fd": "Enable TUI clipboard writes in Terminal settings to copy from SSH, tmux, Neovim, or fzf.",
+                  "7cf51f74fd": "Enable TUI clipboard writes in Terminal settings to copy from SSH, tmux, Neovim, fzf, or Grok.",
                   "89eaa3e80b": "Terminal clipboard write blocked"
                 }
               }
diff --git a/src/renderer/src/i18n/locales/es.json b/src/renderer/src/i18n/locales/es.json
index 11cf5339d6b..ee5e4ebc003 100644
--- a/src/renderer/src/i18n/locales/es.json
+++ b/src/renderer/src/i18n/locales/es.json
@@ -2581,7 +2581,7 @@
               "blocked": {
                 "toast": {
                   "97c98f1afe": "Abrir ajustes",
-                  "7cf51f74fd": "Habilita las escrituras al portapapeles TUI en los ajustes de Terminal para copiar desde SSH, tmux, Neovim o fzf.",
+                  "7cf51f74fd": "Habilita las escrituras al portapapeles TUI en los ajustes de Terminal para copiar desde SSH, tmux, Neovim, fzf o Grok.",
                   "89eaa3e80b": "Escritura al portapapeles del terminal bloqueada"
                 }
               }
diff --git a/src/renderer/src/i18n/locales/ja.json b/src/renderer/src/i18n/locales/ja.json
index 8cc54d3ac1f..adf70d56d71 100644
--- a/src/renderer/src/i18n/locales/ja.json
+++ b/src/renderer/src/i18n/locales/ja.json
@@ -2581,7 +2581,7 @@
               "blocked": {
                 "toast": {
                   "97c98f1afe": "設定を開く",
-                  "7cf51f74fd": "SSH、tmux、Neovim、または fzf からコピーするには、Terminal 設定で TUI クリップボードへの書き込みを有効にします。",
+                  "7cf51f74fd": "SSH、tmux、Neovim、fzf、または Grok からコピーするには、Terminal 設定で TUI クリップボードへの書き込みを有効にします。",
                   "89eaa3e80b": "Terminal のクリップボードへの書き込みがブロックされました"
                 }
               }
diff --git a/src/renderer/src/i18n/locales/ko.json b/src/renderer/src/i18n/locales/ko.json
index e66b07cc5e0..503002ecfa6 100644
--- a/src/renderer/src/i18n/locales/ko.json
+++ b/src/renderer/src/i18n/locales/ko.json
@@ -2581,7 +2581,7 @@
               "blocked": {
                 "toast": {
                   "97c98f1afe": "설정 열기",
-                  "7cf51f74fd": "SSH, tmux, Neovim 또는 fzf에서 복사하려면 Terminal 설정에서 TUI 클립보드 쓰기를 활성화하세요.",
+                  "7cf51f74fd": "SSH, tmux, Neovim, fzf 또는 Grok에서 복사하려면 Terminal 설정에서 TUI 클립보드 쓰기를 활성화하세요.",
                   "89eaa3e80b": "Terminal 클립보드 쓰기가 차단되었습니다."
                 }
               }
diff --git a/src/renderer/src/i18n/locales/zh.json b/src/renderer/src/i18n/locales/zh.json
index e0d28d35be6..e39655c1850 100644
--- a/src/renderer/src/i18n/locales/zh.json
+++ b/src/renderer/src/i18n/locales/zh.json
@@ -2581,7 +2581,7 @@
               "blocked": {
                 "toast": {
                   "97c98f1afe": "打开设置",
-                  "7cf51f74fd": "在终端设置中启用 TUI 剪贴板写入，以从 SSH、tmux、Neovim 或 fzf 进行复制。",
+                  "7cf51f74fd": "在终端设置中启用 TUI 剪贴板写入，以从 SSH、tmux、Neovim、fzf 或 Grok 进行复制。",
                   "89eaa3e80b": "终端剪贴板写入被阻止"
                 }
               }