About the service
A macOS browser from The Browser Company, the team behind Arc and part of Atlassian since autumn 2025. The AI is not bolted on the side but sits in the browser itself: you can ask about the page you are on, talk across several tabs at once and pull context from connected services — Slack, Gmail, Outlook, Notion, GitHub, Google Calendar, Figma. Repeat prompts are saved as skills, and memory and personalisation are opt-in. Higher terms add a morning brief over your calendar, inbox and key links, prep and follow-up for every meeting, and finished reports, decks and recaps assembled from context scattered across tools. The ordinary browser side is all present: work and personal profiles with separate tabs and logins, tab groups with meaningful names, split view and picture-in-picture, an ad and tracker blocker, and end-to-end encrypted sync. Usage is counted in tasks rather than requests, and while the vendor does not name the models it promises models that will not store your data. Dia's plans are official and published; there is no separate corporate tier with SSO on the plans page yet.