What Is Dia?Dia 是什么？
Dia is The Browser Company's AI-first browser — the company's answer to the question Arc could not solve: Arc's novel interface won devoted fans but its "novelty tax" limited mainstream adoption, so active Arc feature development stopped in 2025 and the team built Dia instead. Dia puts an AI assistant in the address bar: it can see your open tabs and, once connected, your work apps — Slack, Google Workspace, Atlassian tools, Loom — and act across them: summarise a tab stack, draft from your documents, assemble a report from live sources.Dia 是 The Browser Company 的 AI 优先浏览器——回答了 Arc 没能解决的问题：Arc 的新颖界面赢得了死忠用户，但"新颖税"限制了大众 adoption，于是 2025 年 Arc 停止新功能开发，团队转做 Dia。Dia 把 AI 助手放进地址栏：能看到你打开的标签页，连接后还能看到你的工作应用——Slack、Google Workspace、Atlassian 工具、Loom——并跨应用行动：总结一叠标签页、按文档起草、从实时来源拼报告。
Dia was macOS-only for a year (open without invitation since October 9, 2025); Windows 1.0 launched October 6, 2026 (official changelog), followed quickly by 1.1.0 (October 8), 1.2.0 with AI Skills (October 15) and 1.3.0 with Dia Sync (October 22). The company behind it was acquired by Atlassian for $610 million in 2025 and now signs users in through Atlassian accounts. One caution from launch week: an early Windows installer carried an "early, untested build" warning in hands-on reports — download only from the official site. Prices per the official site.Dia 做了一年 macOS 独占（自 2025 年 10 月 9 日起无需邀请）；Windows 1.0 于 2026 年 10 月 6 日上线（官方更新日志），随后迅速跟进 1.1.0（10 月 8 日）、带 AI Skills 的 1.2.0（10 月 15 日）与带 Dia Sync 的 1.3.0（10 月 22 日）。背后的公司 2025 年被 Atlassian 以 6.1 亿美元收购，现通过 Atlassian 账号登录。发布周的一个提醒：上手报道称早期 Windows 安装包带有"早期未测试版本"警告——只从官网下载。价格以官网为准。
Dia is the right successor for Arc loyalists and the most interesting browser bet for Atlassian-centric teams: Profiles and sidebar tabs preserve the Arc muscle memory, while the address-bar assistant plus connected-app tools turn the browser from a tab holder into a work surface. The honest risks: Windows is weeks old (expect rough edges — the launch-week installer warning says so plainly), AI features mean granting a browser deep access to your work apps, and Atlassian ownership will shape the roadmap toward workplace suites. Verdict: Arc users should migrate to Dia before December 22 — it is the only path that preserves Spaces, folders and extensions intact — and everyone else should trial it as a second browser before making it home.
Dia 是 Arc 老用户正确的继任者、也是 Atlassian 重度团队最值得看的浏览器赌注：Profiles 与侧边栏标签页保留了 Arc 的肌肉记忆，地址栏助手加已连接应用工具则把浏览器从标签容器变成工作台面。真实风险：Windows 版才上线几周（毛边难免——发布周的安装包警告就明说了），AI 功能意味着给浏览器深挖工作应用的权限，Atlassian 的所有权会把路线图推向办公套件方向。结论：Arc 用户应在 12 月 22 日前迁到 Dia——这是唯一能完整保留 Spaces、文件夹与扩展的路径——其他人则先把它当第二浏览器试用、再决定是否安家。
— 中国吧 AI Tools Hub Editorial Team
Who Should Use Dia?谁适合使用 Dia？
✓ Good Fit For适合以下场景
- Arc users who must migrate before December 22, 2026必须在 2026 年 12 月 22 日前迁移的 Arc 用户
- Atlassian/Slack/Google Workspace teams wanting browser-level AI希望浏览器层就有 AI 的 Atlassian/Slack/Google Workspace 团队
- Researchers juggling many tabs into one summary or report要把一堆标签页压成一份总结或报告的研究者
✕ Not Ideal For不适合以下场景
- Anyone looking to adopt Arc — it is shutting down, not for sale想新用 Arc 的人——它在关停、不是在售
- Privacy-minimalists unwilling to connect work apps to a browser AI不愿把工作应用接给浏览器 AI 的极简隐私派
- Users needing a battle-tested Windows browser on day one — Win 1.0 is weeks old第一天就要久经考验的 Windows 浏览器的人——Win 1.0 才上线几周
Getting Started with DiaDia 快速开始
1. Download Dia only from diabrowser.com (macOS or Windows) and sign in1. 只从 diabrowser.com 下载 Dia（macOS 或 Windows）并登录2. Arc user? Choose Import from Arc during setup — check Profiles and Tab Groups arrived2. 是 Arc 用户？设置时选从 Arc 导入——检查 Profiles 与 Tab Groups 是否到齐3. Connect only the work apps you need, then try one address-bar task across tabs3. 只连接你需要的工作应用，然后用地址栏跨标签页跑一个真实任务Key Features核心功能
- Assistant in the Address Bar地址栏里的助手 — Ask from any tab; Dia uses open tabs as context instead of forcing a separate chatbot window.在任何标签页提问；Dia 把打开的标签页当上下文，不用另开聊天窗口。
- Profiles & Sidebar Tabs (Arc DNA)Profiles 与侧边栏标签页（Arc 血统） — Arc Spaces become Profiles; Folders become Tab Groups; vertical sidebar tabs carry the Arc workflow over.Arc 的 Spaces 变成 Profiles，Folders 变成 Tab Groups；竖排侧边栏标签页承接 Arc 工作流。
- Connected-App Tools & Skills已连接应用工具与 Skills — Slack, Google Workspace, Atlassian, Loom and more as tools; custom Skills (Windows 1.2.0) shortcut repeated assistant routines.Slack、Google Workspace、Atlassian、Loom 等作为工具；自定义 Skills（Win 1.2.0）把重复助手流程变成快捷方式。
- Arc Importer & Dia SyncArc 导入器与 Dia Sync — Passwords, bookmarks, extensions, history, tabs and Spaces import intact; Dia Sync (Win 1.3.0) keeps Mac and Windows in step.密码、书签、扩展、历史、标签页与 Spaces 完整导入；Dia Sync（Win 1.3.0）让 Mac 与 Windows 同步。
- Free Download, AI Optional免费下载，AI 可选 — Browser features free on macOS and Windows; AI is optional — future paid AI tiers per the official site.macOS 与 Windows 上浏览器功能免费；AI 可选——未来付费 AI 档位以官网为准。
Pros & Cons优缺点
✓ Pros优点
- Arc migration path preserves Spaces, folders and extensionsArc 迁移路径完整保留 Spaces、文件夹与扩展
- Address-bar AI works across tabs and work apps地址栏 AI 跨标签页与工作应用工作
- Free on both macOS and WindowsmacOS 与 Windows 均免费
- Fast Windows catch-up: Skills and Sync within weeksWindows 追赶快：几周内补上 Skills 与 Sync
✕ Cons缺点
- Windows build is weeks old — expect rough edgesWindows 版才上线几周——毛边难免
- AI access to work apps is a real privacy tradeoffAI 访问工作应用是真实的隐私权衡
- Arc shutdown deadline is hard: December 22, 2026Arc 关停 deadline 是硬性的：2026-12-22
Use Cases应用场景
Popular ways people use Dia.人们使用 Dia 的常见场景：
📑 Tab-Stack Summaries标签页堆总结
Select a stack of research tabs and ask Dia for one summary with the key points — no copy-paste round trip.选中一叠调研标签页，让 Dia 直接给一份要点总结——不用复制粘贴来回倒。
📋 Reports from Live Work从实时工作中拼报告
Pull a bug summary or status report from connected Atlassian/Slack sources without leaving the browser.不用离开浏览器，直接从已连接的 Atlassian/Slack 来源拉缺陷摘要或状态报告。
🔄 Arc Migration in One PassArc 一次性迁移
Import Spaces, folders, passwords and extensions into Dia before December 22 — then verify Profiles and Tab Groups.12 月 22 日前把 Spaces、文件夹、密码与扩展一次导进 Dia——然后核对 Profiles 与 Tab Groups。
🪟 Work/Personal Profiles工作/个人 Profiles
Swipe between work and personal environments (formerly Arc Spaces) with separate logins per profile.在工作与个人环境（原 Arc Spaces）之间滑动切换，每个 Profile 独立登录。
Similar AI Tools相似 AI 工具
If Dia doesn't fit, the other AI browser in this site's coverage is Perplexity (whose Comet browser is covered in its own upcoming page), and the classic fallback remains Chrome, Edge or Firefox — export from Arc before December 22 either way.如果 Dia 不合用，本站覆盖的另一 AI 浏览器方向是 Perplexity（其 Comet 浏览器将另页介绍），经典 fallback 仍是 Chrome、Edge 或 Firefox——无论如何请在 12 月 22 日前从 Arc 导出。