I’ve been using Dia on and off ever since it came out, and for the most part, it just works. The chatbot has slowly gotten better over time, and there’s plenty you can do with it now, from analyzing multiple tabs at once to digging through the web and handing you back a clean answer. And the best part is that it’s free.

On top of that, we recently spotted that it’s running on Claude Opus 4.8, which is a big deal when you consider people are paying for that kind of model elsewhere.

Ever wanted to try out Claude Opus 4.8?
Anthropic's free version defaults to smaller models like Sonnet rather than Opus, which requires a paid subscription.
But did you know: The AI on Dia's browser is currently powered by Claude Opus 4.8 and is free to use. pic.twitter.com/798dAxBzls
— PiunikaWeb – your daily source of web browser news (@PiunikaWeb) August 6, 2026

But the one thing Dia has always lacked is that it isn’t a complete AI browser, not really. It’s missing the capability that actually defines the category right now, and that’s agentic browsing. If you look at it honestly, it’s mostly a really good chatbot extension bolted onto a browser.

It does let you connect apps like Slack, Gmail, and Canva, which is handy, but that’s still a long way from an AI that goes off and does things for you.

That missing piece is exactly what I brought up just yesterday when I wrote about the two best AI browser alternatives to Atlas. I said Dia was the best all-around pick for most people, but that Aside was the one to grab if you specifically wanted agentic browsing and pretty much every other AI feature under the sun. Well, that gap might be about to close.

Josh Miller, CEO of The Browser Company, confirmed as much on X this week. When a user said he liked Dia but barely used its AI, Miller replied, “The new agentic harness-based version is coming out later this Fall, think you’ll see your use of Claude/ChatGPT decline quite a bit. More soon!”

And in a separate reply to someone frustrated with Codex, he added, “We gotchu Quinten, give us a few months!” So fall is the window, which lines up neatly with Dia’s Windows version also being due around then.

This could be a big win for The Browser Company, especially when you consider that other major AI browser makers are stepping off the gas pedal. OpenAI already shut down its Atlas browser, and I’ve had a nagging feeling that Perplexity’s Comet is heading the same way.

So with agentic browsing finally on the way, Dia is stepping up a notch. And it could genuinely cement itself as the best AI browser out there. Period.

One thing that’s still unclear is whether the company will bring back paid plans for Dia. Earlier this year, it ditched its $20 Pro plan in favour of free access to the chatbot. But there’s no ignoring the fact that agentic browsing eats up a lot of tokens. There’s only so much you offer for free before the cash crunch hits. So this is something we’ll have to keep an eye on.

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