diff --git a/ui-tui/src/__tests__/text.test.ts b/ui-tui/src/__tests__/text.test.ts
index e96cbac3dd..1d61b71b1f 100644
--- a/ui-tui/src/__tests__/text.test.ts
+++ b/ui-tui/src/__tests__/text.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from 'vitest'
 
-import { sameToolTrailGroup } from '../lib/text.js'
+import { fmtK, sameToolTrailGroup } from '../lib/text.js'
 
 describe('sameToolTrailGroup', () => {
   it('matches bare check lines', () => {
@@ -18,3 +18,19 @@ describe('sameToolTrailGroup', () => {
     expect(sameToolTrailGroup('🔍 searching', '🔍 searching extra ✓')).toBe(false)
   })
 })
+
+describe('fmtK', () => {
+  it('keeps small numbers plain', () => {
+    expect(fmtK(999)).toBe('999')
+  })
+
+  it('formats thousands as K', () => {
+    expect(fmtK(1000)).toBe('1K')
+    expect(fmtK(1500)).toBe('1.5K')
+  })
+
+  it('formats millions and billions', () => {
+    expect(fmtK(1_000_000)).toBe('1M')
+    expect(fmtK(1_000_000_000)).toBe('1B')
+  })
+})
diff --git a/ui-tui/src/app.tsx b/ui-tui/src/app.tsx
index d17d0c0fbc..5a66dce58b 100644
--- a/ui-tui/src/app.tsx
+++ b/ui-tui/src/app.tsx
@@ -3,7 +3,7 @@ import { mkdtempSync, readFileSync, unlinkSync, writeFileSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 
-import { Box, Static, Text, useApp, useInput, useStdout } from 'ink'
+import { Box, Text, useApp, useInput, useStdout } from 'ink'
 import { useCallback, useEffect, useRef, useState } from 'react'
 
 import { ActivityLane } from './components/activityLane.js'
@@ -250,7 +250,6 @@ export function App({ gw }: { gw: GatewayClient }) {
   const [sid, setSid] = useState<string | null>(null)
   const [theme, setTheme] = useState<Theme>(DEFAULT_THEME)
   const [info, setInfo] = useState<SessionInfo | null>(null)
-  const [introCollapsed, setIntroCollapsed] = useState(false)
   const [thinking, setThinking] = useState(false)
   const [turnKey, setTurnKey] = useState(0)
   const [activity, setActivity] = useState<ActivityItem[]>([])
@@ -385,7 +384,6 @@ export function App({ gw }: { gw: GatewayClient }) {
     setPastes([])
     setActivity([])
     setBgTasks(new Set())
-    setIntroCollapsed(false)
     setUsage(ZERO)
     lastStatusNoteRef.current = ''
     protocolWarnedRef.current = false
@@ -545,7 +543,6 @@ export function App({ gw }: { gw: GatewayClient }) {
 
     inflightPasteIdsRef.current = payload.usedIds
     setLastUserMsg(text)
-    setIntroCollapsed(true)
     appendMessage({ role: 'user', text })
     setBusy(true)
     setStatus('running…')
@@ -1683,28 +1680,18 @@ export function App({ gw }: { gw: GatewayClient }) {
 
   return (
     <Box flexDirection="column">
-      <Static items={historyItems}>
-        {(m, i) => (
-          <Box flexDirection="column" key={i} paddingX={1}>
-            {m.kind === 'intro' && m.info ? (
-              <Box flexDirection="column" paddingTop={1}>
-                {introCollapsed ? (
-                  <Text color={theme.color.dim}>
-                    {theme.brand.icon} {theme.brand.name} · {m.info.model.split('/').pop()}
-                  </Text>
-                ) : (
-                  <>
-                    <Banner t={theme} />
-                    <SessionPanel info={m.info} sid={sid} t={theme} />
-                  </>
-                )}
-              </Box>
-            ) : (
-              <MessageLine cols={cols} compact={compact} msg={m} t={theme} />
-            )}
-          </Box>
-        )}
-      </Static>
+      {historyItems.map((m, i) => (
+        <Box flexDirection="column" key={i} paddingX={1}>
+          {m.kind === 'intro' && m.info ? (
+            <Box flexDirection="column" paddingTop={1}>
+              <Banner t={theme} />
+              <SessionPanel info={m.info} sid={sid} t={theme} />
+            </Box>
+          ) : (
+            <MessageLine cols={cols} compact={compact} msg={m} t={theme} />
+          )}
+        </Box>
+      ))}
 
       <Box flexDirection="column" paddingX={1}>
         {streaming && (
diff --git a/ui-tui/src/lib/text.ts b/ui-tui/src/lib/text.ts
index ac2efb2cb7..264d741fde 100644
--- a/ui-tui/src/lib/text.ts
+++ b/ui-tui/src/lib/text.ts
@@ -80,7 +80,12 @@ export const estimateRows = (text: string, w: number, compact = false) => {
 
 export const flat = (r: Record<string, string[]>) => Object.values(r).flat()
 
-export const fmtK = (n: number) => (n >= 1000 ? `${(n / 1000).toFixed(1)}k` : `${n}`)
+const COMPACT_NUMBER = new Intl.NumberFormat('en-US', {
+  maximumFractionDigits: 1,
+  notation: 'compact'
+})
+
+export const fmtK = (n: number) => COMPACT_NUMBER.format(n)
 
 export const hasInterpolation = (s: string) => {
   INTERPOLATION_RE.lastIndex = 0