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Dia is The Browser Company’s AI-first browser for getting work done across tabs, documents, email, calendars, Slack, and other connected services. It is the company’s post-Arc product, but it should not be described as merely Arc with a chatbot attached. Dia is being developed as a distinct, work-oriented browser built around conversational context, reusable Skills, proactive summaries, and cross-application workflows.
The most important practical limitation comes first: Dia currently requires macOS 14 or later and an Apple silicon Mac with an M1 chip or newer. Windows, Linux, iPhone, Android, and Intel Macs are not listed as supported platforms in the current availability information.
Current-status note: Dia is changing quickly. The release history reviewed for this article lists July 23, 2026 as its latest displayed release-notes entry and identifies version 1.40.1 in the release history. Features, integrations, experiments, and paid-feature plans may vary by version, account, connected service, and rollout.
What is Dia?
Dia is a Chromium-based browser from The Browser Company, the company behind Arc. Arc emphasized a different approach to browser organization and navigation; Dia takes the company’s next strategic step by making AI a central part of how users find, understand, organize, and act on work information.
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Dia can work with the context already open in the browser and, in supported workflows, information from connected services. That makes its intended use different from opening a separate chatbot and manually copying in a webpage, Slack message, email, or document. The goal is to reduce the context switching involved in knowledge work.
Atlassian announced an agreement to acquire The Browser Company on September 4, 2025. That places Dia and Arc within Atlassian’s announced strategic plans, but the announcement does not make Dia an ordinary Atlassian app or guarantee that every Atlassian product will be integrated with it.
Dia compatibility: the requirement that determines whether you can use it
| Requirement | Current status |
|---|---|
| Operating system | macOS 14 or later |
| Mac processor | Apple silicon with an M1 chip or newer |
| Intel Mac | Does not meet the stated requirement |
| Windows, Linux, iPhone, and Android | Not listed as supported in the current availability statement |
| Current price | Dia’s current Terms of Use say the product is free, but paid features may be introduced later |
If you already have a compatible Mac, the hardware requirement is straightforward. If you do not, the computer—not Dia—is the purchase you need to consider. A MacBook Air M1 or newer Apple silicon Mac can serve as the enabling hardware, but it is not a Dia-branded product and does not include a separate guarantee of future Dia pricing or compatibility.
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How Dia is meant to fit into a workday
Dia’s value becomes clearer in a workflow than in a feature list. A typical use case might look like this:
- Start with Morning Brief. Proactive features can use context from connected services and open tabs to surface upcoming meetings, follow-ups, documents, messages, and related priorities.
- Ask a question about the work already in front of you. Dia’s Chat can use tab context and, in supported workflows, connected application context. For example, you might ask it to compare the documents open in your tabs with the related Slack discussion or to identify what needs attention before a meeting.
- Turn a larger request into a Report. Reports, introduced in the July 9, 2026 release, are designed for more presentable outputs. Dia can draft plans, summarize or analyze work context, produce comparisons, and create an editable document that can be styled and shared.
- Save a recurring process as a Skill. If you repeatedly perform the same research, writing, planning, shopping, transcription, learning, development, or fact-checking task, a Skill can provide a reusable workflow shortcut.
- Organize the result and the source material. Tab Groups, automatic tab-group names, tab cleanup, Splits, custom tabs, and separate work and personal contexts are intended to keep the browser from becoming another unstructured work queue.
This workflow does not mean Dia can safely or autonomously complete every web task. It is better understood as a browser that can interpret and synthesize selected context, with the user still responsible for checking sources, approving consequential actions, and deciding what information to connect.
Dia’s main features
Conversational browsing and tab context
Dia began with the idea of chatting with open tabs. Instead of describing every page manually, a user can ask questions that refer to the current browser context. Release notes also describe improvements involving Slack search, tab-related tool visibility, and memory search.
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The practical advantage is strongest when the answer depends on several pieces of information: a webpage, a document, a conversation, and a calendar item. The practical risk is that the answer may still be incomplete or wrong, especially if the relevant information is not available to Dia or if the model misinterprets the page.
Skills: reusable workflow templates
Skills are reusable shortcuts for repeatable workflows. The Skills Gallery includes examples for areas such as fact-checking, transcription, writing, shopping, research, planning, learning, and development. Users can discover Skills, remix them, and submit their own.
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That makes Skills closer to workflow templates than conventional browser extensions. They can help standardize a recurring process, but they should not be treated as automatically trustworthy. Review what a Skill is designed to do and check its output before relying on it for research, business decisions, purchases, or published material.
Memory
Memory allows Dia to use summaries of prior activity when answering questions about earlier browsing or work context. Dia’s security information says that these memory summaries are created on the company’s servers and stored locally on the device.
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Connected services and proactive suggestions
Release notes document connections involving calendar, email, Slack, Google Drive, Notion, and other tools. Morning Brief and Proactive Suggestions can use information from connected services and browser tabs to surface meetings, follow-ups, documents, messages, and priorities.
The exact integration list and available actions can change. Connecting a service should not be interpreted as a promise that Dia can freely modify that service, send messages, reschedule meetings, or complete every action inside it. Check the current connection permissions and the specific workflow before assuming that Dia can take an action rather than summarize information.
Reports for larger pieces of work
Quick Chat is suited to a focused question. Reports are intended for a more substantial deliverable. Dia can use available work context to draft a plan, comparison, summary, or analysis, then provide a document that the user can edit inline, style, and share.
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Organization and work/personal separation
Dia includes Tab Groups, automatic naming for groups, tab cleanup, Splits, custom tabs, and a sidebar-oriented organization model. It also supports separate work and personal contexts. These features matter because an AI browser becomes less useful if the user cannot control which context is available to a question.
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Optional Sync arrived in April 2026. Dia describes Sync as local-first and end-to-end encrypted. It also depends on a recovery kit: if you lose both your machine and your recovery file, you may be unable to recover synced data. Treat the recovery file as an important backup credential rather than something to store only on the computer being synced.
Privacy: what stays local and what may leave the device?
Dia’s privacy model is more nuanced than either “everything stays on your Mac” or “the company stores your complete browsing history in the cloud.” The important distinction is between local browser data, AI requests, optional synchronization, and product-improvement data.
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| Data or feature | What Dia says happens | What users should take from it |
|---|---|---|
| Browsing history, bookmarks, and files | Stored locally by default in encrypted form | Local storage is the default, but using an AI feature can create a separate external-processing event |
| AI questions and page context | Relevant prompts and page context may pass through Dia’s servers to trusted AI partners | Do not assume an AI request is processed entirely on-device |
| Memory | Summaries are created on company servers and stored locally | This is not the same claim as retaining a complete server-side copy of all browsing history |
| Content used to improve Dia | Some content data is used by default to improve speed and accuracy, is not associated with the user’s account, and may be retained for up to 30 days | Review the content-sharing controls and disable this behavior if it does not fit your requirements |
| Sync | Optional encrypted browser-data synchronization using end-to-end encryption | Dia says its servers cannot read synced data, but losing both the device and recovery file can make recovery impossible |
| Incognito | Prevents storage of content data, chats, and history | Use it when you do not want those categories stored by Dia |
When an AI feature requires outside processing, Dia’s security FAQ names provider relationships involving OpenAI/Azure, Anthropic, Google Vertex, AWS, and Gemini. Dia says its trusted AI partners are contractually restricted from retaining or using user data to train their own models.
That statement does not mean that no processing occurs. Dia separately says that some content data is used by default to improve its own speed and accuracy. It also says that this data is not associated with the user’s account, can be retained for up to 30 days, and can be disabled in Settings. Privacy-sensitive users should review Memory, personalized chats, content sharing, and related data controls before connecting work accounts.
Dia also includes native ad blocking and tracker controls. Those features reduce some routine tracking and advertising activity, but they do not turn every webpage, connected service, or AI request into a private offline workflow.
A practical privacy checklist before connecting work accounts
- Review Settings before importing context. Check Memory, personalized chats, content sharing, and any connected-service permissions.
- Connect only the services you need. A calendar, Slack workspace, email account, Google Drive, or Notion workspace can expose substantially different categories of work information.
- Use Incognito for sensitive sessions that should not be stored. Dia says Incognito prevents storage of content data, chats, and history.
- Keep the Sync recovery file separate and protected. The recovery file is essential if you later lose the device holding your local data.
- Do not paste regulated information into an AI workflow without approval. In particular, Dia is not HIPAA-compliant and The Browser Company does not offer a Business Associate Agreement.
Enterprise and security posture
Dia presents a more serious enterprise story than a simple consumer browser with an AI panel. The company says it conducts regular external security assessments, encrypts data at rest and in transit, restricts production access by role, and operates a bug-bounty program through HackerOne. It also says critical Chromium security fixes are published within 48 hours and that Dia follows a weekly update cadence.
These are Dia’s company representations, not independent testing performed for this article. A fast update schedule can improve security responsiveness, but it can also mean that IT teams need a disciplined process for testing new browser versions and changing AI behavior.
Dia says it completed a SOC 2 Type II examination covering security, confidentiality, and privacy for calendar year 2025, with the final report issued in 2026. It also supports SAML-based single sign-on, Chromium enterprise policies, Google Chrome Cloud Management, and Dia-specific MDM policies that can disable AI features on specified websites. The product is called Dia for Work in its work-oriented positioning.
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The HIPAA limitation is decisive
Dia’s security FAQ explicitly says that Dia is not HIPAA-compliant and that The Browser Company does not offer a Business Associate Agreement. Organizations handling protected health information should not use Dia for those workflows without a separate legal, security, and compliance review. The same caution applies to other regulated or contractually restricted data where an organization must control external AI processing.
Prompt injection is still a risk
Webpages can contain instructions designed to manipulate an AI system. Dia acknowledges prompt-injection risk and says it uses layered controls. It also says the browser will not automatically open or follow URLs generated by an LLM.
That is a useful safeguard, but it does not make Dia risk-free or fully agent-proof. Users should be particularly cautious when an AI answer recommends opening a link, downloading a file, changing an account setting, sending a message, or making a legally or financially consequential decision.
How mature is Dia?
Dia is actively developed rather than static. Documented 2026 releases include Sync, Reports, Proactive Suggestions, tab cleanup, Slack attachment reading, Google Drive notifications, automatic tab-group names, performance improvements, and experiments such as New Chat.
Frequent releases are a strength for users who want a product that is improving quickly, but they also make current documentation easier to outdate. A capability may depend on the release channel, the connected app, the account, or an experimental rollout. Check Dia’s current release notes and in-product settings before designing a business process around any one feature.
Who should try Dia?
| Dia is a good fit for | Why |
|---|---|
| Mac-based knowledge workers | The product is designed around browser tabs, documents, messages, calendars, and other work context |
| Researchers and writers | Chat, Skills, memory, and Reports can reduce repeated copying and reformatting |
| People with recurring information workflows | Skills can turn repeatable research, planning, writing, or fact-checking processes into shortcuts |
| Teams evaluating managed AI-browser deployment | SSO, enterprise policies, MDM controls, stated SOC 2 Type II coverage, and Dia for Work provide a starting point for review |
Who should wait or choose another tool?
- Windows, Linux, iPhone, and Android users: Dia’s current availability statement does not list those platforms.
- Owners of Intel Macs or Macs below macOS 14: The stated hardware and operating-system requirements are not met.
- Healthcare teams handling PHI: Dia is not HIPAA-compliant and has no Business Associate Agreement from The Browser Company.
- Users who need fully local AI: Relevant prompts and page context may be sent through Dia’s servers to outside AI providers.
- Users expecting a general-purpose autonomous agent: Dia is a context-aware browser, not a guarantee that an AI can safely complete any web task.
- People who only need basic browsing: Connecting services, reviewing permissions, and checking AI output may add complexity that a conventional browser does not.
Dia versus Arc: the short version
Arc is the product that established The Browser Company’s alternative browser approach. Dia is the company’s AI-first follow-up, focused more directly on helping users interpret and move work across tabs and connected services.
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Bottom-line evaluation
Dia is worth trying if you use a compatible Apple silicon Mac and much of your day is split between browser tabs, Slack, email, calendars, documents, and SaaS applications. Its strongest promise is not that it makes browsing more entertaining; it is that it can help assemble scattered work context into answers, summaries, plans, and repeatable workflows.
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The trade-off is that the product sits close to sensitive information. AI requests can involve external processing, some content-improvement processing is enabled by default according to Dia, Memory and connected services require deliberate configuration, and the product is not appropriate for HIPAA-protected workflows. Dia’s current free status, fast release cadence, and changing feature set also make it sensible to evaluate it as an evolving tool rather than a fixed long-term platform.
Frequently Asked Questions
Is Dia just Arc with AI added?
No. Dia comes from the same company and follows Arc strategically, but it is being developed as a distinct AI-first, work-oriented browser. Its positioning centers on tab context, connected services, Skills, Morning Brief, proactive suggestions, and Reports.
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Can Dia run on Windows, Linux, iPhone, or Android?
Those platforms are not listed as supported in Dia’s current availability statement. Dia currently requires macOS 14 or later and an Apple silicon Mac with an M1 chip or newer.
Is Dia free?
Dia’s current Terms of Use say that Dia is free, but they reserve the right to charge for certain features in the future. Do not interpret the current free status as a promise that Dia will remain free forever.
Does Dia keep all browsing data on the Mac?
Browsing history, bookmarks, and files are stored locally by default in encrypted form, but AI requests that require outside processing can send relevant prompts and page context through Dia’s servers to trusted AI partners. Optional Sync uses end-to-end encryption, while Memory summaries are created on company servers and stored locally.
Can a healthcare organization use Dia for protected health information?
Dia’s security FAQ says it is not HIPAA-compliant and that The Browser Company does not offer a Business Associate Agreement. It should not be used for PHI workflows without an organization-specific compliance and legal review.
The Bottom Line
Bottom line: Dia is a promising AI browser for Apple silicon Mac users whose work spans many tabs and connected workplace tools. It is not cross-platform, fully local, guaranteed accurate, HIPAA-compliant, or an autonomous agent that can safely handle every web task. Try it for context-heavy knowledge work, but review its privacy controls and treat AI output as something to verify.
