Perplexity Comet Browser: The AI That Actually Browses for You

Perplexity Comet is the most talked-about browser of 2026 — and for good reason. It is not just a browser with an AI chatbot bolted on. It is a browser where the AI knows what page you are on, understands what you are trying to do, and can actually do it for you. It launched on desktop in July 2025, arrived on Android in November, hit iPhone in March 2026, and is now free on every platform. A major iOS update shipped in May 2026 with eight new improvements, including real iPad multi-window support.

Here is what Comet actually does, where it falls short, and who should consider making the switch.

What Makes Comet Different

Most "AI browsers" are Chrome with a sidebar chatbot. Comet is built differently from the ground up.

The core feature is a context-aware assistant that always knows what is on your screen. Open a product page and it can compare that item to competitors, surface discount codes, or pull up reviews — without you asking. Reading a long technical document? It summarizes it and pulls out the key points in seconds. Users report saving 15 minutes or more per work session once they adapt to the workflow.

Deep Research Integration

Comet integrates Perplexity's Deep Research mode directly into the browsing experience. Highlight any topic, click research, and Comet compiles a cited report from across the web — no copy-pasting into a separate app. For anyone who reads, writes, or researches regularly, this is one of its most practically useful features.

Voice Mode

Comet supports voice interaction throughout the browser. You can navigate pages, trigger searches, and ask questions about what you are reading entirely by voice. On mobile especially, it changes how quickly you can extract information while doing other things simultaneously.

Agentic Tasks

This is where Comet gets ambitious. The browser can complete multi-step tasks autonomously: booking a restaurant, comparing flight prices, filling out forms, or walking through an entire checkout flow. When it launched on iOS in March 2026, it reached number three overall on the US App Store, driven largely by interest in this feature.

Where Comet Falls Short

Agentic features are inconsistent. Reviews consistently flag that the AI gets stuck in loops, books the wrong dates, or takes so long that doing it yourself would have been faster. The automation is impressive when it works and deeply frustrating when it does not.

Performance costs are real. When the AI assistant is active, CPU usage can spike to 20% and RAM can swell past 4 GB with just a handful of tabs open. Standard browsing feels comparable to Chrome, but firing up agentic features makes the difference noticeable.

Privacy concerns. One cybersecurity firm warned against using Comet for anything involving confidential information, citing the browser's extensive data access requirements combined with documented security vulnerabilities. Perplexity has acknowledged the issues and says fixes are underway.

Should You Use Comet?

If you read a lot, research regularly, and treat your browser as a workspace — Comet is genuinely worth trying. It is now free on all platforms, so the cost of testing it is zero.

The catch: Comet's agentic features request account access to email services, shopping platforms, calendars, and more. Before connecting those accounts, it is smart to sign up for third-party services using a temporary email at app.fasttempmail.com rather than your real address. If Comet's access is ever compromised — or if you simply want to disconnect later — your real inbox stays untouched.

If you are primarily a casual browser who watches videos and checks social media, Comet's features will not change much about your experience and the RAM overhead is probably not worth it. Chrome or Brave remain safer defaults for light users.

Comet vs Chrome: Quick Comparison

Feature	Comet	Chrome
AI assistant	Deep, context-aware	Sidebar only (Gemini)
Deep Research	Built-in	Extension required
Agentic tasks	Yes (inconsistent)	No
RAM usage	High (4 GB+)	High (standard)
Privacy	Mixed reviews	Mixed reviews
Price	Free	Free

FAQ

Is Perplexity Comet free? Yes. Comet became free on all platforms in 2026. It launched as a $200/month desktop-only product in mid-2025 before going fully free across iOS, Android, Mac, and Windows.

Is Comet available on iPhone? Yes. Comet launched on iOS in March 2026 and received a significant update in May 2026 with eight major improvements including real iPad multi-window and Split View support.

Is Comet safe to use? For general browsing, yes. For anything involving confidential business data, security researchers advise caution. Comet requires broad data access for its agentic features, and security vulnerabilities have been documented. Perplexity says patches are in progress.

How is Comet different from Arc or Brave? Comet's core differentiator is agentic AI — it can autonomously complete multi-step web tasks. Arc focuses on workspace organization; Brave focuses on privacy and ad blocking. Neither has Comet's agentic automation capabilities.