Arc has 61 days left. The Browser Company plans to shut the browser down on Dec. 22, when the Mac and Windows apps stop working and every Arc account is deactivated, and it is pointing people to Dia, its newer AI browser.
Security is the reason the company gave. “Keeping a browser secure takes constant, dedicated work that is only increasing in the age of AI,” it wrote on a farewell page at arc.net, adding that its engineering and security teams will focus on Dia from here. The Arc help center was blunter, saying “we can no longer keep Arc as safe and secure as it needs to be.”
Mobile goes first, then the desktop apps
Nobody can open a new Arc account as of Thursday. Existing members on Mac and Windows keep getting basic fixes until the cutoff. Arc Search on iOS and Android loses Browse for Me and its other AI features on Nov. 23, along with sign-in and tab sync. On Dec. 22 the Android app is pulled from Google Play and from the phones it’s installed on, while the iPhone app stays around as a plain browser.
The firmest deadline sits a week before the shutdown. Dec. 15 is the last day to ask for a copy of the personal data tied to an Arc account, or to have it deleted. Local history and passwords aren’t part of that copy, because the company says it has no access to them, so those survive only through an import into Dia or an export from Arc before the apps go dark.
What doesn’t carry over to Dia
Dia imports Arc’s Spaces, Favorites, pinned tabs, folders, bookmarks, history, passwords and extensions, with Spaces turning into Profiles. It’s a one-time copy, though, and Dia needs its own account. Seven Arc features aren’t in Dia at all, including Air Traffic Control, Boosts, Easels and Peek. Anyone who relied on Air Traffic Control to send certain sites into a specific Space will be switching Profiles by hand, since Arc’s FAQ says Dia can’t do that automatically.
The decision comes almost exactly a year after Atlassian closed its purchase of The Browser Company on Oct. 20, 2025. A quarterly filing put the price at about $610 million, roughly $488.3 million of it in cash and the rest in Class A shares subject to vesting. When the deal was announced, the two companies said they intended to make Dia “the AI browser for work,” and Atlassian pointed to its more than 300,000 customers as a way to reach millions of new users. Arc had stopped getting new features in 2025.
OpenAI went the other way on a dedicated browser. It announced in July that it would retire ChatGPT Atlas, moving its browsing agent into the ChatGPT desktop app and a Chrome extension, and Atlas stopped working on Aug. 9, less than a year after it launched.