Dia

Dia is a web browser from The Browser Company, the team that made Arc, which Atlassian bought in October 2025. It has a chat built in that can read the page you're on and any tabs you @-mention, so you can ask it to compare two proposals, summarise a thread or rewrite a paragraph in place. Connect Slack, Gmail, Google Calendar, Notion, Jira or Confluence and it can answer questions across those too.

It's aimed squarely at office work. The paid plans add a Morning Brief that pulls your calendar, inbox and to-dos into one page, meeting prep that opens the agenda and notes before each call, and reports or slide decks built from what it has gathered. Skills let you save a prompt you use often and run it with a slash command. Choose Dia over Comet if your day runs on Slack and Atlassian tools; choose Comet if you want an agent that clicks through websites for you or a browser on your phone.

The catch is price. Since August 2026, new Mac users get a free browser with no AI after a two-week trial, and the AI costs $20 a month (or $100 for the full workday features). Arc fans also say it still lacks some of Arc's best touches, there's no phone app, Windows only arrived in October 2026, and new accounts now have to sign in with an Atlassian account.

• Office workers
• Product managers
• Agencies
• Former Arc users

Office workers and teams who live in Slack, Gmail and Atlassian tools and want their browser to pull it all together.

• Chat with your tabs

  Ask about the page you're on or @-mention several tabs to compare or summarise them together.

• Connected apps

  Links to Slack, Gmail, Outlook, Google Calendar, Notion, GitHub, Figma, Jira and Confluence so answers draw on your work.

• Skills

  Save a prompt you use often, like 'turn this into a LinkedIn post', and run it with a slash command.

• Morning Brief

  A daily page with your meetings, important emails and assigned work, on the top plan.

• Meeting prep

  Opens the agenda, notes and related docs before a call and helps with the follow-up.

• Arc-style tabs

  Pinned tabs, split view, tab groups and profiles for keeping work and personal apart.

• Better Browser

  Free

  People who want a tidy browser without AI.

  • Profiles, tab groups and split view
  • Built-in ad and tracker blocking
  • Sync across devices
  • 14-day trial of Better Days, then no AI
• Our pick

  Better Answers

  $10 to $20/mo (Dia's page shows both)

  Anyone who wants the AI chat day to day.

  • Ask Dia about any page or tab
  • Answers using your connected apps
  • Models that don't store your data
  • Usage limits apply

• Better Days

  $100/mo

  Heavy users who want the full workday assistant.

  • Six times the chats and tasks
  • Daily Morning Brief
  • Reports, decks and recaps
  • Meeting prep and follow-up

• Dia for Work

  See website

  Companies rolling it out to staff.

  • Single sign-on and admin tools
  • Device management support
  • Security attestation for IT teams

Prices in USD unless noted, checked 21 October 2026. Vendors change plans often, so confirm on their site before you buy.

Ways Dia can slot into your week.

1. 1

   Compare two quotes

   Open both proposals, @-mention them and ask Dia where they differ on price, scope and terms.

2. 2

   Start the day in one place

   Read the Morning Brief with your meetings, urgent emails and Jira tickets before opening anything else.

3. 3

   Walk into meetings prepared

   Let it pull up the agenda, past notes and the client's latest emails ten minutes before the call.

4. 4

   Reuse your best prompts

   Save a Skill for 'summarise this for a client update' and run it on any page.

Dia replaces Chrome or Arc as your main browser and draws on the apps you already use, especially Slack, Google Workspace and Atlassian. If your business doesn't use those, much of the value goes away and a free option like Comet makes more sense.

The closest alternatives to Dia in the library, best rated first.

• Comet3.9/5· best for summarising long pages, PDFs and videosDia vs Comet
• Manus3.7/5· best for multi-step research with a report at the endDia vs Manus
• Genspark3.5/5· best for first-draft slide decks from a briefDia vs Genspark
• OpenClaw3.2/5· best for A personal assistant you text on WhatsApp or TelegramDia vs OpenClaw

Nobody has reviewed Dia here yet. If you use it, your take helps everyone else choose.