Perplexity Comet vs. Dia Browser: Which one is the best ?
Comet vs. Dia Browser: The first agentic browsers are here. Dia wins on polish and reliability, while Comet bets on bold automation—even making a $34.5B offer to buy Chrome.
A new battle is heating up—not for the smartest AI model, but for the smartest browser. Perplexity’s Comet and The Browser Company’s Dia Browser, it’s the same team behind the famous Arc Browser, are leading the charge, both betting that the future of AI lives inside the tool you use most: your browser.
And make no mistake—this isn’t just a UI refresh. These are early attempts at agentic browsers: software that doesn’t just show the web, but works the web for you.
No Time to Read? Here’s the Scoop
Dia Browser → Smooth, contextual, and reliable. $20/month Pro Plan with Skills.
Comet → Ambitious automation: scrape sites, create sheets, send emails. $200/month invite-only.
Dia wins on usability, Comet on raw potential.
Wild fact: Perplexity offered $34.5B for Chrome to supercharge Comet’s reach.
Verdict: Today, Dia is better. Tomorrow? Comet could be the one to watch.
Dia Browser: Polished and Personal
Dia feels like the Apple of agentic browsers—smooth, intuitive, and stable. Hit Ctrl+E / Cmd + E and a chat window slides in, ready to interact with whatever page you’re on. The magic lies in context awareness:
Dia understands what you’re doing across tabs and can act on it without needing step-by-step babysitting.
You can even create custom “skills”—think of it as a micro-automation layer inside the browser. I made a Twitter skill that instantly pulled up trending topics, analyzed them, and summarized the chatter for me. The experience felt smooth, natural, and, importantly, reliable.
Dia also leans heavily into personalization. You can teach it your writing style or preferences, and it remembers. Combine that with thoughtful design touches—the fonts, the fluid interface—and the result is a browser that feels both functional and delightful.
Dia is available only on "Invite Only" option, and it is available at the moment only for Mac users. Unfortunately, it's not yet live for Windows.
Dia’s Pro Plan launched recently at $20/month, giving you “unlimited” AI access and Skills (though with soft usage caps). It’s still early days, but the UX polish is unmistakable.
Check out the video below:
Comet: Ambition on Overdrive
Comet, on the other hand, is far more ambitious under the hood. It has a deep agentic architecture that lets it go beyond simple tab assistance.
Press Alt+A and you can literally command it to do things on the web—like “find AI jobs in Hyderabad” or “scrape these pages into an Excel sheet.” It’ll navigate, extract, and present data back to you in structured form.
On paper, this is next-level. In practice? It’s a bit rough. The Excel exports are often messy, email assistance doesn’t always hit the mark, and the whole experience feels less polished compared to Dia. Even small quirks—like defaulting to ChatGPT as the search engine in every new tab without an easy way to switch—get in the way.
That said, you can sense the potential.
Comet feels like the raw power play: an architecture that could eventually automate whole workflows inside the browser, but isn’t quite ready for prime time.
Let’s not forget a couple of cool features Comet brings to the table. First, there’s the instant summary icon—tap it, and Comet quickly digests whatever page you’re on, serving up the main points without the fluff. Then there’s voice mode, which honestly feels like chatting with your browser. You can ask it questions, get answers in real time, or even tell it to go to a specific page—and it’ll actually do it. It’s like having a super-responsive co-pilot riding shotgun while you browse.
For now, Comet is invite only or accessible only to Perplexity Max users at $200/month (invite-only). That price point screams “experimental playground” more than “mainstream adoption.” Still, Perplexity is doubling down—the CEO even called browsers, not chatbots, the “next killer AI app.” And in a move that shook headlines, they placed a $34.5B bid for Google Chrome, arguing antitrust could force a divestiture.
Comet vs. Dia: Where Things Stand
If Comet is about raw horsepower, Dia is about refinement.
Dia Browser wins on usability, stability, and design. Its contextual intelligence and skill creation make it genuinely useful today.
Comet brings the bolder vision, but with reliability gaps and a user experience that still needs tightening.
The battle reminds me of early mobile OS wars—one product offering stability and polish, the other offering disruptive ambition. The difference this time? The battleground is your browser, the tool you probably spend most of your day in.
Other Agentic Browsers in the Market
While Comet and Dia are the frontrunners, they’re not alone. A wave of agentic browsers is emerging, each experimenting with a slightly different angle:
Fellou – positions itself as an automation-first browser with deep workflow orchestration.
Opera Neon – an experimental AI browser from Opera with features like Neon Chat, Do, and Build.
Warmwind OS – marketed as the first AI-native operating system, streaming a cloud-based agentic environment through the browser.
Microsoft Edge (Copilot Mode / Olympia UI) – experimenting with AI-first browsing experiences.
Sigma OS - SigmaOS is a productivity-focused browser designed for multitaskers, offering a unique workspace approach to managing tabs and workflows. Its sleek interface and collaborative features make it stand out for users who juggle multiple projects at once.
Genspark Browser – smaller entrants carving out niches in the agentic browsing space.
The signal is clear: browsers are no longer passive windows to the web—they’re becoming active participants.
Check out my previous articles