Arc browser will be discontinued on December 22nd, and the team will shift to Dia The Arc browser will officially cease service on December 22nd. Officially, this decision was not easy. The team has invested a lot of effort in building Arc over the years and is proud to grow together with the community. However, due to safety concerns, especially in the AI era, maintaining browser security requires sustained and focused investment. Dia was built from scratch and meets current security standards, so the engineering and security teams will focus their resources on Dia.