ChatGPT Atlas: OpenAI's ChatGPT browser is gone, here is what took over
ChatGPT Atlas is OpenAI's web browser with ChatGPT built in, launched on macOS in October 2025 and shut down on August 9, 2026. Its capabilities now live inside the ChatGPT desktop app and the company's Chrome extension. The download itself cost nothing, with agent mode kept behind paid plans. Windows and Android builds were announced on day one but never shipped, which makes the Atlas browser a short yet telling chapter in OpenAI's history.
- ChatGPT sidebar on every page you visit
- Agent mode filled carts and forms on its own
- Browsing excluded from model training by default
- Password and bookmark import from any browser
- Never left macOS, no Windows or Android build
- Service ended on August 9, 2026
- Agent mode required a paid plan
What ChatGPT Atlas did, from the sidebar to agent mode
Atlas was built on Chromium, the same base as Chrome, with ChatGPT pinned in a right-hand column on every page. The assistant summarized articles, compared shop listings and rewrote selected text without any copy-paste. Agent mode went further, you asked for a recipe and the cursor filled a grocery cart while you watched.
Browser memories, fully optional, kept context from the sites you visited and brought it back later, say a recap of the job listings you browsed that week. Deleting your history wiped the linked memories, and nothing fed model training without explicit consent. Researchers still flagged prompt injection as the weak spot of this kind of agent.
A shutdown dated August 9, 2026, and a successor already in place
The announcement came on July 9, 2026. OpenAI merged Chat, Work and Codex into one new desktop app and scheduled the Atlas shutdown a month later. The browser no longer opens, and the official path now runs through the ChatGPT app and its Chrome extension.
Migration took some elbow grease, bookmarks exported as an HTML file (old school, Netscape style) while history and open sessions stayed behind. After 292 days, Atlas joined the growing list of retired AI tools, and it is quite a famous entry.
| Atlas capability | Where it lives now |
|---|---|
| ChatGPT sidebar on every page | ChatGPT extension for Chrome |
| Agent mode that browses and fills forms | ChatGPT desktop app and Codex |
| Tabs, downloads, account logins | Built-in browser inside the ChatGPT app |
| Bookmarks saved in Atlas | HTML export to import into Chrome |
ChatGPT Atlas vs Comet and Gemini in Chrome
The closest rival to Atlas was Comet, the browser from Perplexity, which remains available and pursues the same idea of an assistant acting on your pages. Google went another way and folded Gemini into Chrome rather than shipping a separate browser. Atlas ended up as a trial run, and OpenAI concluded that an app plus an extension covered the job.
The gesture changed, the idea did not. You open the ChatGPT app, hand over a browsing task, and the agent works through its own tabs.
Frequently asked questions
Is ChatGPT Atlas available on Windows?
No, ChatGPT Atlas never shipped on Windows. The October 2025 macOS build stayed the only one, even though Windows, iOS and Android versions were promised at launch. Since the shutdown, the official route on a PC goes through the ChatGPT desktop app and the Chrome extension, which carry over most of what the browser did.
Is ChatGPT Atlas free?
Downloading Atlas cost nothing and a free ChatGPT account was enough for the sidebar. Agent mode sat behind the Plus, Pro and Business plans, billed $20 a month at the entry level back then. Since August 9, 2026, the browser can no longer be downloaded at all.
ChatGPT Atlas or Comet, which one should you pick?
Comet won by forfeit, in a way, since Atlas stopped working in August 2026. Perplexity's browser remains available on Mac and Windows with its built-in assistant. On the OpenAI side, the equivalent now lives in the ChatGPT desktop app, which inherited Atlas tabs, downloads and agent mode.
Was ChatGPT Atlas safe for my browsing data?
On paper, yes, browsing stayed out of model training by default and memories could be deleted at any time. Security researchers still reported prompt injection risks, hidden page instructions that could hijack the agent. OpenAI had set guardrails, a forced pause on banking sites and a ban on file downloads or code execution.
Verdict: Less than a year on the clock, and the idea outlived the product. Anyone who enjoyed browsing with ChatGPT at their side will find the same reflexes in OpenAI's desktop app and Chrome extension, with nothing exotic left to install.
