Perplexity Comet: The AI Agent Browser That Does the Work for You

The Browser That Works While You Think

The browser has not fundamentally changed since Netscape. You type, you click, you open tabs, you forget why you opened them. Perplexity thinks that era is over. On July 9, 2025, it launched Comet — initially to a limited group of Max subscribers at $200 per month, with a waitlist that grew faster than the company could process it. By October 2025, Comet was free for everyone. On March 18, 2026, the iOS app went live and hit #3 Overall on the US App Store within 48 hours. Android followed shortly after.

Comet is not a chatbot bolted onto a browser. It is a Chromium-based web browser — the same engine that powers Chrome — where an AI agent lives natively in a sidebar, knows which tab you are on, retains context across your session, and can take action on your behalf. Book a flight. Draft a reply to an email. Fill a form. Compare prices across three open tabs. Summarize what you just read and cross-reference it against something you read yesterday. Comet treats these as browser-level operations, not features you have to install separately.

What is Perplexity Comet? Comet is a free AI-native web browser built on Chromium by Perplexity AI. It combines standard web browsing with a built-in AI agent (powered by Claude Opus 4.6 for Max subscribers) that understands your current page context, conducts research across multiple tabs, automates multi-step tasks like booking and emailing, and integrates Perplexity's Deep Research and cited-answer capabilities directly into every webpage you visit.

Timeline: How Comet Got Here

Comet's rollout tells you something about how Perplexity operates. The browser launched on desktop for Max subscribers only in July 2025. Within weeks, it had become — by Perplexity's own description — the most sought-after AI product of the year. Demand outpaced invitation capacity for months. In October 2025, Perplexity removed the paywall entirely and made Comet free for all platforms, including Windows and macOS. Android launched November 20, 2025. iOS arrived March 18, 2026, one week later than planned (Perplexity pushed the date back by seven days). As of April 2026, Comet is available free on all four major platforms — macOS, Windows, Android, and iOS — with no account required to download and no subscription required to use core features.

What the Comet Agent Actually Does

Every new tab in Comet opens with the Comet Assistant ready in the sidebar. It is not a search bar. It is an agent — and the distinction matters. A search bar retrieves information. An agent acts on it.

In-Page Context Awareness

When you open a webpage, Comet reads it. Ask the assistant a question about what you are viewing and it answers using the page content combined with Perplexity's live web search. Ask it to compare what you are reading to an article you read in a previous tab — it can. The AI maintains context not just within a page but across your open tabs, which means "what do all of these tabs have in common?" is a legitimate question you can ask your browser. On mobile, the Android version includes Smart Summarisation that synthesizes content across all open tabs simultaneously, not just the one currently in focus.

Multi-Step Task Automation

This is where Comet diverges most sharply from any browser with an AI sidebar. Comet can navigate websites autonomously. It can click, scroll, fill forms, and make sequential decisions within a workflow — not just suggest what you should do next. Documented use cases include booking flights (finding the route, selecting seats, entering passenger details up to the payment confirmation step), managing email (summarizing inboxes, drafting replies, scheduling based on content in your email thread), filling forms using data from your profile, comparing product prices across multiple retailer pages, and hunting for promo codes automatically during checkout. For enterprise users, the April 2026 update added the ability for Comet to walk through a competitor's onboarding flow and assess differentiators — a competitive intelligence workflow that previously required hours of manual navigation.

Comet + Deep Research

Perplexity's Deep Research feature — which runs a multi-source research synthesis that previously lived only in the Perplexity app — is fully integrated into Comet. Highlight any text on any webpage and ask Comet to research it. The browser will run a Deep Research query, synthesize sources, and return a cited summary without you opening a new tab or switching applications. As of the March 2026 update, Deep Research in Comet can now generate deliverables directly — PowerPoint presentations, spreadsheets, and dashboards — from your research prompt, removing the need to copy findings into a separate tool.

Voice Mode

Comet includes voice mode powered by GPT Realtime 1.5 on desktop, allowing spoken questions and mid-task verbal feedback without typing. On Android, voice recognition is natively integrated and lets you chat with your Comet Assistant to find information across all open tabs simultaneously. The practical use case for voice is ongoing tasks: you can describe a goal verbally, give feedback while Comet works, and redirect the agent mid-session without pausing to type.

Email Assistant and Background Assistants

In 2026, Perplexity expanded Comet beyond the browser window itself. The Email Assistant (available to Max subscribers) works by being CC'd on any email thread — it then handles scheduling, prepares draft replies before you open your inbox, and completes tasks you email it directly. Background Assistants work simultaneously and asynchronously: multiple AI agents eliminate items from your to-do list while you focus on something else, without requiring you to monitor their progress. Perplexity describes this as your "personal team of AI assistants" — a meaningful step beyond a single in-browser agent.

Personal Computer (Mac, April 2026)

The April 2026 update introduced Personal Computer on Mac — an expansion that takes Comet's agentic capabilities beyond the browser window into the local operating system. Personal Computer adds local file editing, local computer use, local browsing via Comet, and voice orchestration. It is available to all Max subscribers and rolling out to Pro subscribers. Windows availability is on a waitlist. The effect: Comet is no longer just a browser agent — it is becoming an OS-level personal assistant that happens to have a browser built in.

The Model Powering Comet

As of April 2026, Claude Opus 4.6 is the default model powering the Comet Browser Agent for Max subscribers. Perplexity explicitly chose Opus 4.6 for its reasoning ability on complex tasks, including analyzing data patterns on dashboards, investigating GitHub commit history, and walking through multi-step competitor analysis flows. Max subscribers can also switch to Claude Sonnet 4.5 for faster, lighter tasks. The underlying model choice is the single biggest differentiator between free Comet and Max-tier Comet: free users get agentic features but with lighter models and reduced automation depth.

Comet vs. Chrome and Competitors

What the Setup Looks Like

Comet is built on Chromium, which means the transition from Chrome is deliberately frictionless. The import process during initial setup pulls in your Chrome bookmarks, history, passwords, and extensions. Chrome extensions install from the Chrome Web Store normally — you add them to Comet the same way you would add them to Chrome, and they appear in the top-right corner next to the Assistant controls. If you use Grammarly, a password manager, or a tab organizer in Chrome, it will work in Comet. The one area where the mobile version currently lags the desktop: no extension support on iOS or Android yet, and no iPad-specific app as of the March 2026 launch.

The Security Issue You Should Know About

An agentic browser that can click, fill forms, and navigate on your behalf creates a larger attack surface than a passive one. In August 2025, security researchers at LayerX identified a vulnerability they named CometJacking — an attack vector that could potentially exfiltrate personal data to a remote server. Perplexity issued patches and added a visual confirmation layer that requires explicit approval before the agent executes sensitive actions. Independent audits from Brave Software and Guardio Labs confirmed that Comet's sandboxing improved meaningfully after the disclosure. The enterprise version, launched in 2026, adds further controls: admins can configure exactly which actions the AI agent is permitted to take, with security developed in partnership with CrowdStrike. The broader point remains: before granting any agentic browser access to your email, financial accounts, or form auto-fill data, read what data the agent can access and under what conditions. Perplexity does collect browsing and search history from Comet to build ad-targeting profiles — a trade-off worth understanding before you make it your default browser.

Perplexity's Numbers in 2026

Comet does not exist in isolation — it is the browser layer of a platform that crossed $450 million in annualized recurring revenue in March 2026, up from $200 million in total 2025 revenue. Perplexity's valuation sits near $21 billion. The platform handles over 1 billion queries per month from 45 million monthly active users. On Samsung's Galaxy S26, Perplexity's APIs power Bixby's real-time web search and Samsung Internet's agentic browsing capabilities — making Perplexity the first non-Google company to receive OS-level integration on a Samsung device. Comet is how Perplexity keeps those users inside its ecosystem beyond the search box.

Who Comet Is NOT For

Comet is not the right browser for Linux users — it is not available on Linux as of April 2026. It is not the right choice if privacy from ad profiling is a hard requirement; Brave Leo offers free AI assistance on a browser that explicitly does not build ad profiles from your browsing data. Comet is also not ideal for casual browsing where you have no research or automation workflows — for someone who mostly watches YouTube, checks social media, and reads occasional articles, Chrome's stability advantage is meaningful and Comet's agent features will go unused. Finally, if your primary need is complex, multi-step agentic computer use beyond the browser — running local applications, manipulating files, executing code — Cursor Agent Mode or Claude Code are better fits for that layer of automation.

Frequently Asked Questions

Is Perplexity Comet actually free in 2026?

Yes. Comet is free to download and use on Mac, Windows, iOS, and Android with no subscription required. A Perplexity account is needed for some features. The free tier uses lighter AI models and has reduced automation depth. Pro ($20/month) and Max ($200/month) unlock more powerful models — Claude Opus 4.6 is the default agent model for Max subscribers — and higher limits on Deep Research, background agents, and the Email Assistant.

How does Comet handle security when it takes actions on my behalf?

Comet requires visual confirmation before executing sensitive actions — clicking "confirm" or "proceed" — rather than acting silently. After the CometJacking vulnerability was identified in August 2025, Perplexity patched the issue and added this confirmation layer. Enterprise deployments include per-action controls configured by admins, with security developed in partnership with CrowdStrike. No AI agent browser is without risk; the practical step is to review which accounts and data you grant it access to.

Can I use Chrome extensions in Perplexity Comet?

Yes. Comet is Chromium-based and supports Chrome extensions from the Chrome Web Store. You install them the same way as in Chrome — find the extension, click "Add to Comet," and it appears in the top-right corner of the browser. Extensions are fully supported on desktop (macOS and Windows) but not yet on the iOS or Android mobile versions as of April 2026.

How does Comet compare to ChatGPT Atlas for agentic browsing?

Both are full agentic browsers that can navigate and take actions autonomously. The key practical differences as of April 2026: Comet is available on Mac, Windows, iOS, and Android — ChatGPT Atlas is macOS only with no release date for other platforms. Comet is free; Atlas requires a ChatGPT Plus or Pro subscription for agent mode. Comet uses Claude Opus 4.6 (Max tier) for reasoning; Atlas uses GPT-5.2. Both provide cited answers and cross-tab context. For teams not already committed to the OpenAI ecosystem, Comet's cross-platform availability gives it a meaningful practical advantage right now.

Which Perplexity plan should I get to use Comet properly?

For most users, the free tier is a reasonable starting point to evaluate Comet's core browsing and summarization. If you want to use Deep Research more than occasionally, run background agents, or access the Email Assistant, Pro at $20/month is the right next step — it includes roughly 200 Pro Searches per week and 20 Deep Research queries per month. If agentic workflows are a core part of your daily work, Max at $200/month unlocks Claude Opus 4.6 as the browser agent, Model Council, unlimited Deep Research, and Personal Computer on Mac. Explore the full AI browser category on SwitchTools or read the Perplexity tool overview to compare options before committing.