OpenAI killed Atlas 10 months in: ChatGPT desktop now does the browsing, agents open tabs for you

新智元 · wechat · 2026-09-03

Xinzhiyuan's long-form piece reviews OpenAI's browser pivot: core exec Tibo Sottiaux says ChatGPT desktop is now his primary browser.

Timeline

Atlas launched Oct 2025 in the traditional "browser-first, AI in sidebar" form
Jul 2026: ChatGPT Work shipped to 100% of Pro users; the new desktop app force-merged Codex, triggering backlash
Jul 17: Tibo apologized and restored sidebar history/projects, cross-device sync, and dual-mode switching
Aug 9: Atlas shut down; the same day a new ChatGPT desktop launched, unifying Chat, Work and Codex with a built-in browser
Sep 3: Tibo declared ChatGPT his main browser

The logic

OpenAI abandoned the standalone browser shape, not browsing itself: tabs, downloads and navigation moved into the desktop app as components the AI invokes
The order flipped: instead of you navigating somewhere and summoning AI, you hand over tasks and the browser pops up on demand — pages become intermediate interfaces
Beat Chrome? Move into Chrome: ChatGPT's built-in browser uses isolated state but redirects complex tasks to the Codex Chrome extension to reuse existing logins; Anthropic's Claude in Chrome follows the same playbook
Market reality: AI browsers (Atlas, Comet) are squeezed into StatCounter's sub-3% "other" bucket while Chrome holds over two-thirds; Arc stalled, Sidekick shut down
The real contest is the high-frequency task entry point: who gets the task first when people need AI to work

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