Comet

Comet is a web browser made by Perplexity. It looks and works like Chrome, runs your Chrome extensions and imports your bookmarks, but it has an assistant down the side that can see the page you're on. Ask it to summarise a long article, compare three products open in different tabs, pull the key points out of a YouTube video or draft a reply to the email in front of you.

It's free on Mac, Windows, Android and iPhone. There is also an agent side: hand it a job like 'find a dentist near me with Saturday appointments and fill in the booking form' and watch it click through the sites for you. Since September 2026 that runs on Perplexity Computer credits rather than being included with Pro, which upset a lot of paying users. Pro comes with a one-off bundle of credits, Max gets a monthly allowance, and after that you pay as you go. Pick Comet if you want an AI browser you can use daily without paying; pick Dia if you work inside Slack, Jira and Confluence all day and want a browser built around that.

The catch is trust. Security researchers have shown again and again in 2025 and 2026 that a web page or calendar invite can hide instructions that trick Comet's agent into leaking email or files. Perplexity patches each one and has added safeguards, but nobody has fully solved this for any AI browser. Keep the agent away from your bank, your password manager and anything you can't undo.

• Researchers
• Marketers
• Students
• Founders

Anyone who researches, compares or reads a lot online and wants an AI helper in the browser without paying for it.

• Comet Assistant

  A sidebar that reads the page and your open tabs and answers questions, with Perplexity's sources.

• Browser control

  Using Computer credits, it can click, scroll and fill in forms across sites to finish a job while you watch.

• Work mode

  Hands bigger jobs to Perplexity Computer, which keeps working in the background and is metered by credits.

• Works like Chrome

  Built on the same engine, so Chrome extensions, bookmarks and passwords come across in a few clicks.

• On every device

  Mac, Windows, Android and, since March 2026, iPhone and iPad.

• Comet Plus

  A $5 a month add-on, included with Pro and Max, that opens paywalled articles from partner publishers.

• Our pick

  Free

  Free

  Everyday browsing with an assistant for summaries and questions.

  • The full browser on desktop and mobile
  • Comet Assistant for page and tab questions
  • Ad and tracker blocking
  • Agent tasks need Computer credits

• Comet Plus

  $5/mo

  Readers who want partner publishers' paywalled articles.

  • Premium articles from partner publishers
  • Most of the money goes to the publishers
  • Included free with Pro and Max

• Perplexity Pro

  $20/mo, or $200/yr

  Anyone who wants the agent to do tasks for them.

  • One-off bundle of 4,000 Computer credits for agent tasks
  • Top models from OpenAI, Anthropic and Google
  • Comet Plus included
  • Everything else in Perplexity Pro

• Perplexity Max

  $200/mo, or $2,000/yr

  Heavy users running many tasks in the background.

  • 10,000 Computer credits a month for agent tasks
  • Highest limits on everything else
  • Early access to new features

Prices in USD unless noted, checked 21 October 2026. Vendors change plans often, so confirm on their site before you buy.

Ways Comet can slot into your week.

1. 1

   Read less, learn more

   Open a long industry report or competitor's pricing page and ask for the five things that matter to you.

2. 2

   Shortlist suppliers

   Open four supplier sites in tabs and ask Comet to line them up on price, minimums and delivery times.

3. 3

   Tame the inbox

   With Gmail open, ask it to summarise unread threads and draft short replies for you to check.

4. 4

   Book the boring stuff

   With credits, have the agent find and fill in a booking or enquiry form while you watch and approve.

Comet replaces Chrome rather than sitting beside it, so the switch costs you nothing in extensions or bookmarks. It pairs naturally with a Perplexity subscription; if your team lives in Atlassian, Dia fits better, and for long unattended jobs Manus or Genspark go further.

The closest alternatives to Comet in the library, best rated first.

• Manus3.7/5· best for multi-step research with a report at the endComet vs Manus
• Dia3.6/5· best for asking questions across several open tabsComet vs Dia
• Genspark3.5/5· best for first-draft slide decks from a briefComet vs Genspark
• OpenClaw3.2/5· best for A personal assistant you text on WhatsApp or TelegramComet vs OpenClaw

Nobody has reviewed Comet here yet. If you use it, your take helps everyone else choose.