Dia AI Browser Integrates Arc's Popular Features

The Browser Company's AI-first browser, Dia, is adopting beloved functionalities from its predecessor, Arc.

The AI web browser Dia is incorporating 'greatest hits' features from Arc, leveraging past insights. This move aims to create a snappier, smarter, and simpler browsing experience. The Browser Company, now part of Atlassian, continues to innovate independently.

Mark Ellison

By Mark Ellison

November 9, 2025

4 min read

Dia AI Browser Integrates Arc's Popular Features

Key Facts

  • Dia, an AI web browser, is integrating popular features from its predecessor, Arc.
  • The Browser Company, developer of Dia and Arc, was acquired by Atlassian for $610 million.
  • Arc was considered too complex for most users, but provided valuable insights into user preferences.
  • Dia's architecture is designed for better AI, speed, and security.
  • Integrated features include Focus mode, vertical tabs, pinned tabs, and a sidebar mode.

Why You Care

Ever feel overwhelmed by your browser tabs and digital clutter? Imagine a browser that learns from past attempts and streamlines your online life. The AI web browser Dia is now integrating popular features from its predecessor, Arc, promising a more intuitive experience. This creation could significantly simplify how you interact with the internet daily. Are you ready for a smarter, less cluttered browsing future?

What Actually Happened

The AI web browser Dia is drawing significant inspiration from Arc, its earlier incarnation. This strategic move follows Dia’s acquisition by Atlassian for $610 million, as mentioned in the release. The Browser Company, which developed both browsers, is leveraging its past learnings. Arc, initially launched in mid-2023, aimed to reinvent browsing for modern internet use. It introduced features like separate workspaces and a Command Bar, according to the announcement. However, Arc proved too complex for many users, as detailed in the blog post by Josh Miller.

Miller, The Browser Company founder, admitted that Arc was “simply too different, with too many new things to learn, for too little reward.” This insight is now guiding Dia’s creation. Dia’s architecture is reportedly “much better for AI, speed, security,” the team revealed. The company is now adapting Arc’s most successful features to be native to Dia. This includes beloved functionalities like the sidebar mode and vertical tabs.

Why This Matters to You

This integration means you could soon enjoy a yet simple browsing experience. Dia is designed to be AI-native, offering features like memory and agents without unnecessary bloat. Think of it as getting the best of both worlds: AI capabilities combined with user-friendly design. For example, imagine having your work and personal browsing neatly separated, or quickly accessing your favorite sites through a streamlined sidebar. This could drastically reduce your digital fatigue.

What specific browsing frustrations could Dia help you overcome?

This approach helps the company get ahead in the competitive AI browser race. “Dia + Arc = snappier, smarter, simpler by default w/ Pro mode,” according to Josh Miller. The Browser Company continues to operate independently post-acquisition, as mentioned in the release. This independence allows them to focus on adding more “browser basics” that users loved in Arc. You can expect a browser that truly understands and anticipates your needs.

Key Features Being Integrated into Dia:

  • Focus Mode: Helps you concentrate on one task.
  • Vertical Tabs: Organizes your open tabs efficiently.
  • Pinned Tabs (Grid-view): Quick access to your most important pages.
  • Google Meet Picture-in-Picture: Multitask during video calls.
  • Sidebar Mode: Centralized access to search, tabs, and bookmarks.

The Surprising Finding

Here’s the twist: Arc, despite its complexity and lower adoption, was not a failure. The research shows that it provided over a year’s worth of crucial insights. This data revealed which modern browser features truly resonated with users. Miller admitted that Arc “lacked cohesion in both its core features and core values.” This honest assessment allowed the company to refine its strategy for Dia. It challenges the common assumption that a product must achieve widespread adoption to be successful. Instead, Arc served as a valuable learning system. Its experimental nature, while a source of complexity, also generated vital user feedback. This feedback is now directly shaping Dia’s creation, making it more user-centric.

What Happens Next

Expect to see these integrated features rolling out to Dia users in the coming months. The company is actively soliciting feedback for additional features, according to the announcement. This iterative creation process means Dia will continually evolve based on user needs. For example, future updates might include more AI agents for task automation. This could free up your time for more creative or strategic work. The industry implications are significant, potentially setting a new standard for AI-first browsers. The Browser Company aims to deliver a browser that is “snappier, smarter, simpler by default,” the team revealed. Our advice for readers is to keep an eye on Dia’s updates. Consider trying the browser as these Arc-inspired features become available. It could genuinely change your daily workflow.

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