What is Dia?
Dia is an AI web browser that chats with your open tabs and connected work tools, writes for you and prepares daily briefs and meeting material. It is made by The Browser Company of New York, the team behind Arc, which Atlassian acquired in 2025. Dia is available on Mac now, with Windows support listed as coming later for paid plans.
Dia differs from a chatbot in a tab because the assistant can read across Slack, Gmail, Notion, Outlook, GitHub, Google Calendar and Figma as well as the pages you have open. That lets it answer questions about your own work, synthesise scattered information into a shareable report or a slide deck, and show the agenda, notes and documents for an upcoming meeting. The free tier is a regular browser with profiles, split view, tab groups, ad and tracker blocking and sync, while the paid tiers add the AI features. It suits people who spend their day in browser-based work apps.
Main Features
- Answer questions using your open tabs and connected tools such as Slack, Gmail and Notion.
- Generate a Morning Brief with your calendar, inbox highlights and key links.
- Pull meeting agendas, notes and related documents together before a call.
- Turn scattered information into a shareable report or a slide deck.
- Group related tabs automatically and view pages side by side with Splits.
- Separate work, freelance and personal browsing with profiles.
- Block ads and trackers by default and sync with end-to-end encryption.
How to Get Started with Dia
- Download Dia for Mac from diabrowser.com and import your bookmarks and passwords.
- Start the 14-day trial of Better Days, which needs no credit card.
- Connect work tools such as Gmail, Google Calendar, Slack or Notion.
- Ask Dia a question about your open tabs or request a summary or draft.
- Choose a paid plan at the end of the trial or stay on the free browser.
Dia Pricing
The Better Browser plan is free and includes the core browser without AI features. Better Answers costs $20 per month and adds AI chat across your tabs and tools, while Better Days costs $100 per month with six times the usage plus the Morning Brief, report and deck generation and meeting prep. New users get a 14-day trial of Better Days with no credit card required.
Who Should Use It?
- Knowledge workers who live in Slack, Gmail and Notion all day.
- Managers who want a daily brief and meeting prep without manual digging.
- Former Arc users looking for the same team's newer browser.
- Consultants who juggle work and client profiles.
- Researchers who need answers drawn from many open tabs.
Dia Alternatives
- Comet: Perplexity's AI browser with stronger web research and agent tasks.
- Opera Neon: An agentic browser from Opera for automating web tasks.
- Genspark AI: An AI workspace that also builds reports and slides from research.
Frequently Asked Questions
Is Dia browser free?
Yes, Dia has a free plan, but it covers the browser only and does not include AI features. AI chat starts with Better Answers at $20 per month, and new users can try Better Days free for 14 days.
Who makes Dia?
Dia is made by The Browser Company of New York, the team behind the Arc browser. Atlassian acquired The Browser Company in 2025.
Does Dia work on Windows?
Dia's paid AI plans are rolling out on Mac first. The company says Windows users keep free access and that paid plans will come to Windows later.
Does Dia work with Slack and Gmail?
Yes, paid Dia plans connect to Slack, Gmail, Notion, Outlook, GitHub, Google Calendar and Figma. The assistant can then answer questions using that context.