Browserby The Browser Company★ 4.3

Dia

AI browser from The Browser Company (the Arc team, now part of Atlassian) that blends chat, search and browsing into one surface.

Try it

Safety & Trust

Delv Safety Grade: B

Score 72/100 · assessed 2026-04-18

Maintainer85

Permissions40

Supply chain75

Transparency45

Incidents100

Dia is an AI-native browser from The Browser Company, creators of Arc, now part of Atlassian. The maintainer credentials are strong given the established track record with Arc and corporate backing. However, as a full browser with integrated AI capabilities, Dia necessarily has extensive system permissions including network access, filesystem operations, and the ability to execute code through web content. The closed-source nature and lack of public repository significantly limit transparency. Supply chain is reasonably solid via standard desktop distribution channels, though without open code review. No security incidents are known. The broad permissions inherent to any modern browser, combined with AI features that may call external services, create a substantial trust surface that relies heavily on The Browser Company's reputation.

Green flags

Backed by The Browser Company (Arc creators) and Atlassian
Team has proven track record building secure consumer browsers
Standard desktop distribution reduces supply chain risk
No known security incidents or breaches
Professional organization with resources for security investment

Red flags

Closed source with no public repository for community review
Full browser permissions include filesystem, network, and code execution
AI features likely send browsing data to external LLM services
Minimal public documentation on data handling and privacy practices
New product without established security track record

Permissions requested

Read filesWrite filesOutbound networkInbound networkShell executeBrowser controlExternal LLM callRead env

Assessed by Delv Editorial using public metadata. Grades are advisory and update as the ecosystem changes. They do not replace your own review of permissions and code before granting an agent access to sensitive systems.

Pricing

FREE — Free

Platforms

desktop

Review

Dia is The Browser Company's attempt to collapse the chat-search-browse loop into a single surface. Instead of asking ChatGPT a question, copying the answer, opening a browser, and refining your search, Dia does all three in one pane. You type a query, it fetches pages, summarises them, and lets you drill into sources without leaving the conversation thread. The autonomy here is modest but useful. Dia decides which pages to fetch, how to rank them, and when to pull in live data versus cached summaries. I've used it for competitive research where I need to compare pricing pages across five SaaS products. Dia pulls them all, lays out a table, and lets me ask follow-ups like "which one has the cheapest enterprise tier?" without manually tabbing between sites. It's faster than Perplexity for this because the sources stay inline and clickable. Where it shines: multi-source synthesis. If you're researching a technical decision and need to cross-reference GitHub issues, Stack Overflow threads, and official docs, Dia handles the grunt work. It's not inventing answers; it's fetching, filtering, and formatting. The interface feels like Arc's spatial design philosophy applied to AI: clean, uncluttered, with tabs that don't multiply into chaos. Failure modes: Dia sometimes over-fetches. Ask a simple question and it'll pull six articles when one would do. The summaries can be shallow if the source material is dense. I've had it gloss over critical caveats in API documentation, so you still need to verify anything load-bearing. It's also not a replacement for deep reading. If you need to understand a 30-page whitepaper, Dia will give you the gist, but you'll miss the nuance. Compared to Perplexity, Dia feels more integrated but less polished. Perplexity's citations are tighter, and its answers feel more confident. Dia's advantage is the browsing layer: you can jump from summary to full page without context-switching. Compared to ChatGPT with browsing enabled, Dia is faster and less prone to hallucination because it shows you the sources upfront. It's free, which makes the calculus easy. I'd reach for Dia when I'm in research mode and need to triangulate information quickly. For single-answer queries, Perplexity is still faster.

Verdict

If you spend hours a week comparing sources or chasing down technical details across multiple sites, Dia will save you time. If you mostly ask one-off questions, stick with Perplexity or ChatGPT. Free tier makes it worth trying for a week to see if the workflow clicks.

Good at

Collapses chat, search, and browsing into one surface without tab chaos
Strong at multi-source synthesis and comparison tasks
Shows sources inline so you can verify without context-switching
Free, with no obvious paywalls or usage caps
Clean interface inherited from Arc's design philosophy

Watch out

Summaries can be shallow for dense or technical material
Sometimes over-fetches sources when a single page would suffice
Less polished than Perplexity for citation quality
Not a replacement for deep reading or nuanced analysis
Autonomy is limited to fetching and formatting, not true agentic planning

Use cases

AI browsing
tab chat
research