Source-backed analysis9
Review basis
Research-based review: the AppDuo Editorial Team compiled it from official pages, documentation, app stores, press and user feedback, without hands-on testing. Every claim links to a source with the date it was checked.
9 reference sourcesInformation updated Nov 10, 2026
How we review
Dia Review
AI browser that chats with your open tabs, from the makers of Arc
By AppDuo Editorial Team · Updated
- macOS
- Windows
On this page
Decide at a glance
Our verdict
Dia suits people who live in the browser and want answers and summaries drawn from their open tabs and work tools. The trade-off is that AI features are now paid (from $10/month), content is routed to third-party AI providers, and independent reviews are still scarce.
Best for: Knowledge workers across web tools such as Slack, Notion and Google Workspace who want an assistant inside the browser
Skip it if: Linux users, or anyone who wants AI features without paying
Pros
- Answers grounded in tabs and work tools, plus Morning Brief, Splits and Profiles
- Chromium-based with weekly security releases and a HackerOne bug bounty
- Free tier still includes ad blocking, tab groups and sync, with end-to-end encrypted sync
Cons
- AI features are limited to paid plans at $10 or $100/month, with usage metered in Tasks that is hard to predict
- Questions and context route through Dia/Atlassian to OpenAI, Anthropic and Google; content sharing is on by default
All pros and cons · Who is it for?
Pros
- SOC 2 Type II (calendar 2025) and contractual no-training limits on AI providers
Cons
- Launched in 2025, has no App Store or Google Play listing and very few independent reviews
Best for
- People who like a Chromium base but want profiles, split view and tidier tab handling
Skip it if
- Healthcare settings handling PHI: Dia states it is not HIPAA-compliant and offers no BAA
Problems it solves
Experience & key features
What Dia is
Dia is a browser from The Browser Company, the maker of Arc. Its homepage pitches it as more than a browser, using AI to pull context from tabs and work tools to answer questions. Atlassian announced on September 4, 2025 that it had agreed to acquire The Browser Company, and Wikipedia reports the price as $610 million in cash.
Key features
Per the homepage, Dia offers cross-tab answers, a Morning Brief summarizing calendar and inbox, Synthesis that pulls from Slack, Notion and Teams into reports, plus Profiles, Splits, named tab groups and slide generation from context. Recent releases added connections to LinkedIn, Linear, Notion and Microsoft. Dia runs on macOS and Windows (Windows was announced in release 1.42.0 on July 30).
Pricing and data
The pricing page now has three tiers: Free without AI, Better Answers at $10/month, and Better Days at $100/month with 20x more asks. New users get a 14-day Better Days trial with no card. The page also says paid plans start with new Mac users (rollout from August 17), while Dia on Windows stays as it is for now. On data, conversations and history are stored encrypted on the device, but AI requests go to OpenAI, Anthropic or Google according to the security page.
More analysis
Versus alternatives
Dia competes with AI browsers such as Perplexity Comet and Opera Neon, and with Chrome or Edge if you just want a built-in assistant. If you do not need AI, Firefox, Brave or Zen remain feature-rich free options. Dia fits best for people already on tools like Notion, Slack and Linear who will pay for the AI layer.
Screenshots
Plans & pricing
Prices last verified Nov 10, 2026
Free
PersonalFree
Free browser without AI features. Includes profiles, tab groups, split view, picture-in-picture, a built-in ad and tracker blocker, and cross-device sync.
Better Answers
Personal$10/mo
Adds the Morning Brief, AI help to find, summarize, draft and build things, and connections to work tools. Usage is measured in Tasks, resets each billing cycle and does not carry over.
Better Days
Personal$100/mo
Everything in Better Answers with 20x more asks.
- Free plan limits
- The free tier has no AI features. Running out of AI usage does not trigger overage charges; AI pauses until the next billing date. Extra usage is sold in $20 credit blocks that roll over for up to three months.
- Free trial
- 14-day free trial · no credit card
Cancellation & refunds
Per the pricing page, unused plan usage and credits are not refunded on cancellation or downgrade unless local law requires it. After cancelling, AI access continues to the end of the billing cycle, then Dia becomes a free browser.
Privacy
The security page says conversations, history, bookmarks and files are stored and encrypted locally by default. Questions and relevant context pass through Dia's servers and Atlassian's AI Gateway to OpenAI, Anthropic and Google; these providers are contractually restricted from training on the data. Content data sharing is on by default (kept 30 days, can be turned off in Settings). Dia completed a SOC 2 Type II examination for calendar year 2025, is not HIPAA-compliant, and says it never sells personal data. The privacy policy (effective April 9, 2026) says Dia may use content to improve the product unless the user opts out.
Dia alternatives
7.6/10Microsoft Edge
Microsoft's Chromium browser, built into Windows with Copilot integration
7.6/10Google Chrome
The world's most-used browser, with data synced through your Google Account
Frequently asked questions
Is Dia free?
The browser has a free tier but without AI features. AI is in Better Answers ($10/month) and Better Days ($100/month), with a 14-day Better Days trial that needs no card.
Which operating systems does Dia support?
macOS and Windows. The pricing page says paid plans had not yet reached Windows when it was checked.
Does Dia send my browsing data to AI providers?
Yes, when you ask: your question and relevant context are sent through Dia and Atlassian's AI Gateway to OpenAI, Anthropic and Google. Some features such as the Morning Brief send data without a prompt, and content sharing is on by default but can be turned off in Settings.
Does Dia replace Arc?
According to Wikipedia, Arc entered maintenance mode after CEO Josh Miller's letter dated May 26, 2025, and the company shifted its focus to Dia, described as Arc's successor.
Review evidence & sources9
Scores
- Ease of use
- 7.5
- Features
- 7.5
- Value for money
- 6.0
- Performance
- 7.0
- Support
- 5.5
- Privacy & security
- 6.5
Why this score
Familiar Chromium-style browser; Product Hunt reviewers note the absence of Arc's left-sidebar tabs. The interface is English-only.
Why this score
Cross-tab answers, Morning Brief, Splits, Profiles and Slack/Notion/Linear/Microsoft integrations; AI is gated behind paid plans.
Why this score
Free tier has no AI; $10/month for the entry plan jumping to $100 for 20x usage, with extra usage in $20 blocks.
Why this score
Weekly releases and critical fixes within 48 hours of Google's patch, but no independent benchmarks of speed or AI accuracy were found.
Why this score
Help, status and Trust Center pages exist; the pricing page lists only [email protected] for enterprise security questions, and no general support email or chat was found.
Why this score
Local encryption and SOC 2, but content goes to third-party AI, content sharing is on by default, and the policy allows using content to improve the product unless opted out.
What users say
- Product Hunt4.8/5 · 8
Sources
- Vendor-providedOfficial homepageNov 10, 2026
- Vendor-providedOfficial pricing pageNov 10, 2026
- Vendor-providedOfficial privacy policyNov 10, 2026
- Vendor-providedOfficial security pageNov 10, 2026
- Vendor-providedDia release notesNov 10, 2026
- Vendor-providedDia download pageNov 10, 2026
- pressAtlassian announcement (2025-09-04)Nov 10, 2026
- Community-reportedWikipedia: Arc (web browser)Nov 10, 2026
- review-siteProduct Hunt listingNov 10, 2026
Specs & compatibility
- Developer
- The Browser Company (Atlassian)
- Headquarters
- United States
- Launched
- 2025
- Category
- ProductivityAI
Capabilities
- AI features
- Integrations
- End-to-end encryption
Platforms
- macOS
- Windows
Interface languages
- English
Integrations
- Slack
- Notion
- Microsoft Teams
- GitHub
- Linear
- Google Workspace
Support
- Help center
Change history
- Feature.Release 1.42.0 announced Dia coming to Windows.
- Update.Dia's current privacy policy took effect.
- Company.Atlassian announced an agreement to acquire The Browser Company, Dia's developer.
Full change history (5)
- Launch.Dia ranked #2 of the day on Product Hunt, the earliest public launch marker on that page.
- Company.CEO Josh Miller's letter put Arc into maintenance mode as the company focused on Dia (per Wikipedia).
About the author
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