이미지: METAL LAB 생성
Summary
- The Frontier Lab account said Claude Desktop now launches about twice as fast as it did a month ago
- The fix addresses timers slowing down and the JS engine falling into sleep mode when the window is hidden in the background, enabling full-speed boot
- Measurements from July 20 to August 17 showed macOS improving 2.3x at p95 and Windows improving 2x at p75
- 발표 계정
- ClaudeDevs(앤스로픽 프론티어랩), 2026-08-18
- 개선 내용
- 백그라운드 실행 시 채팅 입력창 준비까지 걸리는 시간 단축
- Windows 개선폭
- p95 1.7배, p75 2배 빠름
- macOS 개선폭
- p95 2.3배, p75 1.8배 빠름
- 측정 기간
- 2026년 7월 20일 ~ 8월 17일, 기준선 8월 13일
Background boot time cut in half
ClaudeDevs, Anthropic's Frontier Lab account, said Claude Desktop now launches about twice as fast as it did a month ago. The cause was identified as timers being throttled and the JavaScript engine slipping into sleep mode when the app started in the background. The fix ensures full-speed boot even when the window isn't visible on screen, along with several smaller performance improvements, ClaudeDevs explained in a post on X.
An image shared alongside the post showed a log-scale chart tracking, from July 20 to August 17, how long it took for the chat input field to actually become typable. Using August 13 as a baseline, Windows improved 1.7x at p95 and 2x at p75, while macOS improved 2.3x at p95 and 1.8x at p75.
What this means
Claude Desktop is Anthropic's Claude client used directly on PCs without a browser. Desktop apps like this are typically built by wrapping web technology in a desktop window, and operating systems often deliberately slow down timers for windows that aren't visible on screen to save battery. Claude Desktop, which was already running quietly in the background before a user clicked the tray icon to open it, was caught by this power-saving logic, delaying its boot time. Anthropic has continued refining Claude Desktop and related tools over the past month. On August 12, it added a feature linking chat sessions in the "Claude in Chrome" extension across desktop, web, and mobile. A day later, on August 13, it added an auto-continue feature to the Claude Code desktop app for when usage limits are reached. This boot-speed improvement appears to be part of that same ongoing effort.
So what changes
What the numbers reflect is a difference measured in seconds of perceived wait time — specifically, the time it takes for the input field to appear after opening a Claude Desktop instance that's been running in the background. The change appears to already be in effect with no configuration needed, and should be noticeable starting with the next launch of Claude Desktop.
