At launch, Comet will be available first to subscribers of Perplexity’s $200-per-month Max plan, as well as a small group of invitees that signed up to a waitlist.

Comet’s headline feature is Perplexity’s AI search engine, which is pre-installed and set as the default, putting the company’s core product — AI generated summaries of search results — front and center.

Users can also access Comet Assistant, a new AI agent from Perplexity that lives in the web browser and aims to automate routine tasks. Perplexity says the assistant can summarize emails and calendar events, manage tabs, and navigate web pages on behalf of users. Users can access Comet Assistant by opening a sidecar on any web page, which lets the AI agent see what’s on the web page and answer questions about it.

Perplexity has released several products and initiatives in recent months, but none feel quite as consequential as Comet. The company’s CEO, Aravind Srinivas, has significantly hyped Comet’s launch in particular, perhaps because he sees it as vital in Perplexity’s battle against Google.

With Comet, Perplexity is aiming to reach users directly without having to go through Google Chrome, the most popular browser currently. While AI-powered browsers present uncharted territory for many users, Google itself seems convinced this is the direction browsers are headed: The Search giant has deployed several AI integrations into Chrome in recent months, not to mention AI mode, an AI search product with a striking resemblance to Perplexity.

Srinivas said in March that his goal with Comet was to “develop an operating system with which you can do almost everything,” enabling Perplexity’s AI to help users across apps and websites. Becoming the default browser for users can translate to “infinite retention,” Srinivas said in June, which would ostensibly lead to more requests on Perplexity.

That said, Comet is entering a crowded arena. While Google Chrome and Apple’s Safari hold most of the market, The Browser Company launched an AI-powered browser, Dia, in June that seems to offer many of the same features as Comet. OpenAI has also reportedly considered launching its own browser to compete with Google, and has even hired some key members from the original Google Chrome team in the last year.

Comet could get an initial leg up in the browser wars if a meaningful chunk of Perplexity users sign up for the product. Srinivas recently said that Perplexity saw 780 million queries in May 2025, and that the company’s search products are seeing more than 20% growth month-over-month.

Taking on Google Search is no small task, but Perplexity seems to have the right idea by launching a browser of its own. But the startup’s team may find it even harder to convince users to switch browsers than weaning them off Google Search.

Hands on with Comet

The most unique aspect of this browser seems to be Comet Assistant. During our testing, we found Comet’s AI agent to be surprisingly helpful for simple tasks, but it quickly falls apart when given more complex requests. Using Comet Assistant to its fullest potential also requires you to hand over an uncomfortable level of access to Perplexity.

My favorite way to use Comet Assistant, so far, is loading it in the sidecar while I’m browsing the web. Perplexity’s on-browser AI agent can automatically see what I’m looking at, so I can simply ask it questions without needing to open a new window or copy and paste text or links. It’s right there, and it always has the context for what I’m looking at.

Comet Assistant was able to answer questions about posts on social media, YouTube videos, and even sentences I just wrote in a Google Doc. I imagine this will streamline workflows for millions of people that are sending screenshots, files, and links to ChatGPT all day.

Next, I tried getting Comet Assistant to look through my Google Calendar. But before I could do so, I had to give Perplexity significant access to my Google Account — a lot of access. Just look at how long this list is.

I have to say, giving Perplexity permission to view my screen, send emails, look at my contacts, and add events to my Calendar made me a little uneasy. But it seems AI agents need this kind of access to be useful.

Nevertheless, Comet Assistant did a reasonably good job looking through my Calendar. It notified me about some upcoming events, and offered me some advice on when to leave my home, and how to navigate public transit, to get to those events.

The assistant was also able to summarize emails I received that morning from noteworthy senders — in my case, important startups and tech companies with upcoming news. I’ve found that AI agents have a very difficult time parsing through what’s important in an email inbox, but Comet Assistant fared pretty well.

But Comet Assistant fails at more complicated tasks. For example, I tried asking it to help me find a long-term parking spot at San Francisco’s airport for an upcoming trip, specifically places with good reviews that cost less than $15 a day.

The assistant offered up several options that seemed to fit the criteria, so I asked it to book me a spot at one of the locations for the dates I’d be away. The agent navigated the parking lot’s website for me, entered in dates, and even some of my information, then asked me to review what it did and check out.

Turns out, Comet Assistant hallucinated and entered completely wrong dates, later telling me that the dates I wanted were booked, but still wanted to have me complete the check-out anyways. I had to tell the AI agent that the dates were non-negotiable, and asked it to find another location. It ran into the same problem again.

AI agents that mess up key details like this are not new. My experience with OpenAI’s agent, Operator, and Perplexity’s previous shopping agent yielded similar results. Clearly, hallucinations stand in the way of these products becoming real tools. Until AI companies can solve them, AI agents will still be a novelty for complex tasks.

Nevertheless, Comet does seem to offer some new capabilities that may just give Perplexity a leg up over the competition in the modern browser wars.