What is Comet and why it matters

Perplexity, the company known for its AI-powered search engine, made a surprising move by announcing Comet: a browser built from scratch with AI integrated at every layer. The proposal is not simply to add a chatbot next to the address bar, as Microsoft did with Edge and Copilot. Comet wants AI to be the very engine of the browser, taking actions, filling out forms, summarizing pages, and navigating the web on behalf of the user, almost like a personal assistant operating your computer for you.

The short answer to “is it worth buying?” is: it depends heavily on your profile. If you use Perplexity daily, live with open tabs researching information, and want the browser to do more than display pages, Comet has a real proposition. If you’re happy with Chrome or Arc and just want a stable experience, the current product may not justify the switch, especially considering the privacy concerns surrounding this type of tool.

Comet technical specifications

Note: As a software product in recent launch phase, some specifications are still being released by the manufacturer. Check Perplexity’s official website to confirm the most up-to-date details.

The AI agent: what it really does

The big differentiator of Comet is the so-called navigation agent (or “browsing agent”). The idea is simple to understand with an analogy: imagine you hired an assistant who can use your computer. You say “search for flights to São Paulo next weekend and bring me the three cheapest options” and they open websites, navigate pages, filter results, and deliver the answer to you, without you needing to click anything.

According to Perplexity, Comet goes beyond a chatbot that answers questions. It can execute actions in sequence across different websites, fill out forms, make purchases, schedule appointments, and interact with web interfaces like a human would. This type of technology is called LLM with tool use (Large Language Model with tool use), where the language model not only generates text but also triggers external functions and controls the browser.

In practice, the effectiveness of this agent depends heavily on how each website is built. Well-structured sites with good HTML tend to work better with AI agents. Sites with many dynamic elements, CAPTCHAs, or mandatory login may fail. Perplexity has not disclosed success rates for specific tasks, so it’s important to calibrate expectations: the agent is promising, but not infallible.

Privacy: the point you need to understand before installing

This is the most delicate topic about Comet and deserves attention before any decision. For the AI agent to work, it needs to see what you see on the screen, including emails, typed passwords, banking data, and any information that appears during browsing. This means that part of this information may be processed on Perplexity’s servers.

Perplexity has published documents about its privacy policy, but the details of exactly what is sent to the server during agent actions were not completely detailed at the time of this publication. If you deal with sensitive information at work, such as customer data, contracts, or corporate access, it’s essential to read the privacy policy in full and, if necessary, consult your company’s legal or IT department before adopting Comet as your primary browser.

For personal and casual use, the risk is comparable to using any AI extension that already exists in Chrome. But Comet’s level of access tends to be greater, because the agent operates more deeply in the context of browsing than a common extension.

Interface and user experience

Comet was designed to have a clean interface, with Perplexity’s search bar integrated natively. Instead of typing a URL or term into Google, you interact directly with the AI to find what you need. According to the manufacturer, the goal is for the distinction between “search” and “do” to disappear: you don’t search for a recipe and then follow it manually, you ask the browser to organize the ingredients into a shopping list and save it to your notes app.

The Chromium base (the same engine as Google Chrome) ensures compatibility with most websites and Chrome extensions. This is a relevant positive point: you won’t face the classic problem of “this website doesn’t open in my browser”. The technical transition is smooth, even though the philosophy of use is quite different from Chrome or Firefox.

Comet in Brazil: homologation, subscription, and support

As a software product, Comet does not go through the homologation process of Anatel (National Agency of Telecommunications), which is required for physical communication devices. You can install it without such legal restrictions.

The financial point of attention is the subscription. Advanced Comet features, especially the AI agent, require the Perplexity Pro subscription, charged in US dollars. Depending on the exchange rate and your card issuer, the final value in Brazilian reals can vary significantly throughout the year. At the time of publication, the Pro subscription cost US$ 20 per month, which is approximately R$ 120 to R$ 130, but check current conditions before subscribing.

Another point: Perplexity user support is conducted in English via an online hub. There is no localized support in Portuguese, which can be an obstacle for those not comfortable with the language. Software warranty is limited to what is described in the company’s terms of service, with no equivalence to the 90-day warranty of Brazil’s Consumer Protection Code for physical products.

Pros and cons

Pros:

• Native integration with Perplexity’s search engine, no extension needed
• AI agent capable of executing complex navigation tasks autonomously
• Chromium base ensures broad compatibility with websites and extensions
• Interface designed for users who live in intensive research workflows
• Can replace several separate tools (search, summarization, automation)

Cons:

• Requires paid Pro subscription in US dollars for the most relevant features
• Relevant privacy concerns, especially for corporate use
• Support only in English
• Relatively new product with possible instabilities and still-developing features
• AI agent may fail on sites with CAPTCHA, complex login, or dynamic structures

Competitors and alternatives in Brazil

Microsoft Edge is probably the most direct competitor in terms of “AI integrated into the browser”. Copilot is already available in Portuguese and works without additional subscription for basic features. For those starting to explore AI-powered browsers, Edge may be a safer entry point.

Brave is an interesting alternative for those prioritizing privacy and wanting some AI functionality without giving up data control. All these browsers are available for download in Brazil without restrictions.

If you’re thinking about switching devices to improve your experience with digital tools, it may also be useful to evaluate the hardware you use to run these applications. Check the guide on the best smartphones up to R$ 2,000 to buy in 2026 if you’re considering upgrading your smartphone along with your workflow.

Frequently asked questions about Comet

Does Comet work in Portuguese?

Comet’s interface and AI features operate primarily in English, although Perplexity’s engine supports Portuguese queries. The quality of responses and agent actions in Portuguese may be inferior to the English experience. Check Perplexity’s official documentation to learn about the current status of language support.

Do I need to pay to use Comet?

The browser itself can be downloaded for free, but AI agent features and advanced search are tied to the Perplexity Pro subscription, charged monthly in US dollars. Without the subscription, the experience is similar to a common Chromium browser with integrated Perplexity search.

Is Comet safe to use at work?

It depends on your company’s security policy and the type of data you access. By processing browsing information on Perplexity’s servers, corporate use requires careful evaluation by the IT or legal department. For personal use and non-sensitive data, the risk is comparable to other cloud-based AI tools.

Does Comet replace Google?

Not exactly. It replaces the browser and offers an alternative to traditional Google search, but does not replace Google’s services like Gmail, Drive, or Maps. As an AI-powered search engine, Perplexity competes directly with Google Search, but Google’s complete ecosystem remains outside Comet’s scope.

Is Comet worth buying?

Comet is a genuinely interesting product for a specific user profile: someone who already subscribes to Perplexity Pro, works with intensive research, is comfortable with tools in English, and wants to experience what it means to have an AI agent as part of the browser itself. For this profile, the additional cost of adopting Comet as your primary browser may be zero, since the Pro subscription is already paid.

For the general public, the recommendation is to wait. The product is still in an early stage and privacy concerns need more transparency from Perplexity. Alternatives like Edge with Copilot already offer integrated AI in a more mature form, with Portuguese support and no additional cost. This is also true for those keeping an eye on other products connected to the AI ecosystem, like the tools that explore how to use Nano Banana with Gemini for free, which show that you can have useful AI without necessarily paying more.

Recommended for: users already subscribing to Perplexity Pro, research professionals, developers, and AI enthusiasts willing to deal with an evolving product.

Price range: the browser tends to be free; advanced features depend on Perplexity Pro subscription, currently around US$ 20/month (approximately R$ 120 to R$ 130, subject to exchange rate variation).