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Comet

Comet is an AI browser from Perplexity that works as a personal assistant while you browse. Its built-in assistant summarises pages, answers questions across tabs and carries out tasks such as research, shopping and email. Comet is free to download for Mac, Windows, iOS and Android, and optional Perplexity subscriptions add premium news content, stronger AI models and background assistants.

What is Comet?

Comet is an AI browser made by Perplexity that acts as a personal assistant while you browse. It has been free for everyone since 2 October 2025.

It works like a normal Chromium browser with an assistant in a side panel. You can ask the assistant about the page in front of you, compare information across open tabs, or hand over a task, such as drafting an email reply or comparing products.

Key Features

Comet’s key features are a side-panel assistant that summarises pages and answers questions across tabs, an agent that completes multi-step tasks, a Gmail connector and a Chromium base that runs most Chrome extensions.

  • Comet Assistant: Sits beside any page and in new tabs, reads what is on screen and answers questions about it. Ask and Summarize buttons give a one-click answer or summary without pasting text into a separate chatbot.
  • Task automation: Carries out multi-step jobs on your behalf. Perplexity lists researching the web, organising email, ordering groceries, tracking finances, comparing products and planning holidays among the tasks you can hand over.
  • Email and calendar help: A Gmail connector lets the assistant answer email and calendar questions and draft replies. A separate Email Assistant, which schedules meetings when copied into a thread, was announced for Max subscribers.
  • Browser commands and Personal Search: Natural-language commands manage tabs, and Personal Search finds pages from your own browsing history, according to the Perplexity help centre.
  • Background assistants: Work on several tasks asynchronously while you do something else. Pricing guides place this feature on the Perplexity Max plan at $200 a month.
  • Chromium base: Supports most Chrome extensions and imports bookmarks, history and passwords from another browser, according to the Perplexity help centre.
  • Built-in ad blocker: AdBlock is listed as a built-in feature, so basic ad blocking does not need an extension.
  • Discover and Spaces: A personalised news feed and folders for projects sit alongside Shopping, Travel, Finance and Sports tools, all of which TechCrunch listed as free when the browser opened to everyone.

Pros

Comet’s main advantages are that the browser and its assistant are free, it runs on Mac, Windows, iOS and Android, and it keeps most Chrome extensions, so switching costs little.

  • Free core product: The browser and assistant have cost nothing since 2 October 2025. Before that date Comet required the $200 a month Perplexity Max subscription.
  • Works on four platforms: Mac, Windows, iOS and Android are all listed on the official Comet page, so the same assistant is available on desktop and phone.
  • Answers in context: The assistant reads the page in front of you and your open tabs, which removes the copy, paste and tab switching that a separate chatbot needs.
  • Easy move from Chrome: Comet is Chromium-based, supports most Chrome extensions and imports bookmarks, history and passwords, so the layout and your setup carry over.
  • Local storage of credentials: Perplexity says website passwords, payment information and authentication tokens stay on your device with encryption.
  • Ad blocking included: A built-in ad blocker is part of the browser at no extra cost.

Cons

Comet’s main drawbacks are documented prompt-injection risks in its assistant, a $200 a month price for background and email assistants, and limited agent use on the free tier.

  • Prompt-injection risk: Brave researchers reported in August 2025 that hidden instructions on a web page could steer the assistant during a summary and expose email or login data. Brave said the fix was still incomplete when it published.
  • Top features cost $200 a month: Background assistants and the Email Assistant are tied to Perplexity Max, which news coverage and pricing guides put at $200 a month.
  • Free agent use is limited: One pricing guide reports that agent tasks consume credits, that the free allocation is small and that heavy users hit rate limits. Perplexity does not publish the numbers on the Comet page.
  • Prices are not on the Comet page: The official Comet page says the browser is free but shows no plan prices, so Comet Plus, Pro and Max costs have to be confirmed elsewhere.
  • Agent actions need checking: The assistant can click, type and submit for you, so review any purchase, booking or email before it goes through.
  • Shared name: Comet is often confused with Comet, the machine learning platform at comet.com, and at least one AI directory describes that product under this name.

Who is Using Comet?

  • Researchers and students: Compare sources and build study plans.
  • Busy professionals: Manage email and scheduling.
  • Online shoppers: Compare products and prices.
  • Perplexity users: Keep search and browsing in one place.

Pricing

Comet is free to download and use. Paid Perplexity plans add extras, starting with Comet Plus at $5 per month (checked October 2026).

Plan Price What you get
Comet (free) $0 Browser, sidecar assistant, Discover, Spaces, Shopping, Travel, Finance and Sports tools
Comet Plus $5 / month Premium content from partner news publishers
Perplexity Pro $20 / month Comet Plus included, plus advanced AI models
Perplexity Max $200 / month Email Assistant, background assistants and early access to new features

Prices come from news coverage, not the official Comet page.

Disclaimer: Pricing can change. Check the official Perplexity website.

What Makes Comet Unique?

Comet stands out because the assistant can act, not only answer. Most browsers with AI add a chat panel, while Comet is built so that Perplexity can click, type and navigate on your behalf. That makes it a useful test of agentic browsing at no cost.

Compatibilities and Integrations

  • Desktop: Mac and Windows.
  • Mobile: iOS and Android apps.
  • Services: Gmail, Google Calendar and Google Drive are reported.
  • Extensions: Chrome extensions are reported to work.

Comet Tutorials

You can start using Comet in a few minutes:

  1. Download Comet from perplexity.ai/comet and install it.
  2. Open a page and ask the assistant to summarise it.
  3. Give it a small, low-risk task and review each step it takes.

How We Rated It

Criterion Score Why
Accuracy and Reliability 4.1/5 Cited answers, agent can err
Ease of Use 4.5/5 Familiar Chromium layout
Functionality and Features 4.6/5 Assistant plus task automation
Performance and Speed 4.2/5 Agent tasks take time
Customization and Flexibility 4.2/5 Chrome extensions, Spaces
Data Privacy and Security 3.4/5 Prompt-injection research
Support and Resources 4.0/5 Help centre and blog
Cost-Efficiency 4.6/5 Free core browser
Integration Capabilities 4.2/5 Email and calendar
Overall Score 4.2/5 Average of the nine criteria

Summary

Comet is a capable free AI browser for people who want an assistant that can do things, not just explain them. Keep it away from banking and other sensitive sessions until agent security matures, and review any action before you approve it.

FAQ

Frequently Asked Questions

Find answers to the most common questions about our services, reviews, tools, platforms, and more.

Comet is used to browse the web with an AI assistant that can summarise pages, answer questions across tabs and complete tasks for you. Perplexity lists research, email, shopping, learning and website building among its main uses.

Yes. Comet has been free for everyone since 2 October 2025, when Perplexity ended the requirement for a $200 Max subscription. The free browser includes the sidecar assistant, and paid Perplexity plans add extras that most people can skip.

Comet itself costs nothing. Comet Plus, an optional add-on for premium news content, is $5 per month and is included with Perplexity Pro at $20 per month. Perplexity Max at $200 per month adds the Email Assistant and background assistants.

Comet is made by Perplexity, the company behind the Perplexity AI search engine. It is not related to Comet, the machine learning experiment tracking platform at comet.com, which some AI directories describe under the same name.

Comet is a legitimate browser from an established company, but security researchers have demonstrated prompt-injection attacks in which hidden text on a page steers its agent. Perplexity has patched reported issues. Avoid using the agent in banking, health or work sessions.

Comet is available for Mac, Windows, iOS and Android, according to the official Perplexity page. The desktop version came first in July 2025, and the mobile apps followed later, so features can differ slightly between desktop and mobile.

Comet looks and behaves much like Chrome because both are built on Chromium, but Comet puts an AI assistant at the centre. The assistant can read the page, work across tabs and carry out multi-step tasks instead of only showing search results.

Comet alternatives include Dia from The Browser Company and the AI browser from OpenAI, both named by TechCrunch as rivals. If you only need cited AI answers without changing browser, You.com or Perplexity in a normal browser tab will do.

Comet is used to browse the web with an AI assistant that can summarise pages, answer questions across tabs and complete tasks for you. Perplexity lists research, email, shopping, learning and website building among its main uses.

Yes. Comet has been free for everyone since 2 October 2025, when Perplexity ended the requirement for a $200 Max subscription. The free browser includes the sidecar assistant, and paid Perplexity plans add extras that most people can skip.

Comet itself costs nothing. Comet Plus, an optional add-on for premium news content, is $5 per month and is included with Perplexity Pro at $20 per month. Perplexity Max at $200 per month adds the Email Assistant and background assistants.

Comet is made by Perplexity, the company behind the Perplexity AI search engine. It is not related to Comet, the machine learning experiment tracking platform at comet.com, which some AI directories describe under the same name.

Comet is a legitimate browser from an established company, but security researchers have demonstrated prompt-injection attacks in which hidden text on a page steers its agent. Perplexity has patched reported issues. Avoid using the agent in banking, health or work sessions.

Comet is available for Mac, Windows, iOS and Android, according to the official Perplexity page. The desktop version came first in July 2025, and the mobile apps followed later, so features can differ slightly between desktop and mobile.

Comet looks and behaves much like Chrome because both are built on Chromium, but Comet puts an AI assistant at the centre. The assistant can read the page, work across tabs and carry out multi-step tasks instead of only showing search results.

Comet alternatives include Dia from The Browser Company and the AI browser from OpenAI, both named by TechCrunch as rivals. If you only need cited AI answers without changing browser, You.com or Perplexity in a normal browser tab will do.

Comet is used to browse the web with an AI assistant that can summarise pages, answer questions across tabs and complete tasks for you. Perplexity lists research, email, shopping, learning and website building among its main uses.

Yes. Comet has been free for everyone since 2 October 2025, when Perplexity ended the requirement for a $200 Max subscription. The free browser includes the sidecar assistant, and paid Perplexity plans add extras that most people can skip.

Comet itself costs nothing. Comet Plus, an optional add-on for premium news content, is $5 per month and is included with Perplexity Pro at $20 per month. Perplexity Max at $200 per month adds the Email Assistant and background assistants.

Comet is made by Perplexity, the company behind the Perplexity AI search engine. It is not related to Comet, the machine learning experiment tracking platform at comet.com, which some AI directories describe under the same name.

Comet is a legitimate browser from an established company, but security researchers have demonstrated prompt-injection attacks in which hidden text on a page steers its agent. Perplexity has patched reported issues. Avoid using the agent in banking, health or work sessions.

Comet is available for Mac, Windows, iOS and Android, according to the official Perplexity page. The desktop version came first in July 2025, and the mobile apps followed later, so features can differ slightly between desktop and mobile.

Comet looks and behaves much like Chrome because both are built on Chromium, but Comet puts an AI assistant at the centre. The assistant can read the page, work across tabs and carry out multi-step tasks instead of only showing search results.

Comet alternatives include Dia from The Browser Company and the AI browser from OpenAI, both named by TechCrunch as rivals. If you only need cited AI answers without changing browser, You.com or Perplexity in a normal browser tab will do.

Comet is used to browse the web with an AI assistant that can summarise pages, answer questions across tabs and complete tasks for you. Perplexity lists research, email, shopping, learning and website building among its main uses.

Yes. Comet has been free for everyone since 2 October 2025, when Perplexity ended the requirement for a $200 Max subscription. The free browser includes the sidecar assistant, and paid Perplexity plans add extras that most people can skip.

Comet itself costs nothing. Comet Plus, an optional add-on for premium news content, is $5 per month and is included with Perplexity Pro at $20 per month. Perplexity Max at $200 per month adds the Email Assistant and background assistants.

Comet is made by Perplexity, the company behind the Perplexity AI search engine. It is not related to Comet, the machine learning experiment tracking platform at comet.com, which some AI directories describe under the same name.

Comet is a legitimate browser from an established company, but security researchers have demonstrated prompt-injection attacks in which hidden text on a page steers its agent. Perplexity has patched reported issues. Avoid using the agent in banking, health or work sessions.

Comet is available for Mac, Windows, iOS and Android, according to the official Perplexity page. The desktop version came first in July 2025, and the mobile apps followed later, so features can differ slightly between desktop and mobile.

Comet looks and behaves much like Chrome because both are built on Chromium, but Comet puts an AI assistant at the centre. The assistant can read the page, work across tabs and carry out multi-step tasks instead of only showing search results.

Comet alternatives include Dia from The Browser Company and the AI browser from OpenAI, both named by TechCrunch as rivals. If you only need cited AI answers without changing browser, You.com or Perplexity in a normal browser tab will do.

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