Arc Browser Shuts Down on 22 December as Browser Company Bets Everything on Dia

The Browser Company has set a death date for Arc. The design-forward browser that briefly promised to reinvent the web will stop working entirely on 22 December 2026, the company announced on Thursday, as it directs all of its engineering effort into Dia, its AI-first successor (TechCrunch).

“We’ve decided to sunset Arc on December 22, 2026,” the company said, blaming the rising cost of keeping a browser secure. “Keeping a browser secure takes constant, dedicated work that is only increasing in the age of AI. Dia was built from the ground up to meet today’s security standards, so that’s where our engineering and security teams will focus moving forward.”

The wind-down is staged. New Arc accounts can no longer be created as of Thursday. On 23 November, Arc Search on iOS and Android loses its AI features — including “Browse for Me” — and users will no longer be able to sign in or sync tabs, though the app keeps working as a basic local browser. On 22 December, Arc stops working entirely on Mac and Windows, every account is deactivated, and personal data is deleted within 30 days. Arc Search also leaves the Google Play Store.

The company says Dia now surpasses Arc on speed, stability and security, and that bookmarks, passwords, extensions, history, Spaces, folders and tab groups import seamlessly. Browser features stay free in Dia, with AI optional.

Arc’s end has been in the offing since the company froze feature development in May 2025 and then sold itself to Atlassian for $610 million later that year (9to5Mac). CEO Josh Miller has previously said open-sourcing Arc is impossible without also open-sourcing the proprietary Arc Development Kit that powers Dia — a request disappointed fans are already reviving.