What is Comet?
Comet is an AI web browser from Perplexity with a built-in assistant that reads your tabs, answers questions and completes web tasks for you. Perplexity launched it in mid 2025 for paying subscribers and made it free for everyone worldwide on October 2, 2025. It is built on Chromium, so Chrome extensions and bookmarks carry over, and it runs on Mac, Windows, iOS and Android.
The difference from a normal browser is the assistant panel that sits beside every page. It can see the page you are on and your other open tabs, so you can ask it to summarize an article, compare products across several tabs, pull dates out of an email thread or fill in a form. Perplexity search is the default, which means answers come with cited sources. Common uses include research across many pages, shopping comparisons, inbox and calendar chores, and turning long reading into short notes.
Main Features
- Summarize the current page, a video or a long thread from the assistant sidebar.
- Ask questions that draw on all of your open tabs at once.
- Delegate multi-step web tasks such as filling forms, booking or adding items to a cart.
- Search with Perplexity by default and get answers with linked sources.
- Import Chrome extensions, bookmarks and saved passwords on first launch.
- Organize tabs into workspaces and let the assistant tidy or group them.
- Read full articles from partner publishers with the optional Comet Plus add-on.
How to Get Started with Comet
- Download Comet for Mac, Windows, iOS or Android from perplexity.ai/comet.
- Import your bookmarks, extensions and passwords from Chrome or another browser.
- Sign in with a Perplexity account to sync history and unlock the assistant.
- Open any page, click the assistant button and ask it to summarize or act on the page.
Comet Pricing
Comet is free to download and use, including the assistant, with usage limits. Comet Plus costs $5 per month and adds full-text access to partner publishers inside the browser. Perplexity Pro ($20 per month) and Max ($200 per month) include Comet Plus and raise limits on advanced models and agent tasks.
Who Should Use It?
- Researchers and students who read across many tabs and want cited summaries.
- Online shoppers comparing prices and specs across stores.
- Busy professionals who want help with email, calendar and form chores.
- Existing Perplexity users who want their search built into the browser.
- Chrome users curious about an AI-first browser without losing their extensions.
Comet Alternatives
- Dia: AI browser from The Browser Company with a similar chat-with-your-tabs sidebar
- Opera Neon: agentic browser from Opera aimed at automating web tasks
- Perplexity AI: same answer engine without switching browsers
Frequently Asked Questions
Is Comet free?
Yes. Perplexity made Comet free for everyone in October 2025. Comet Plus ($5 per month) and Perplexity Pro or Max subscriptions add publisher content and higher limits.
What is Comet used for?
Comet is used to browse the web with an AI assistant at your side. People use it to summarize pages, compare information across tabs, fill forms and hand off routine web tasks.
Does Comet work with Chrome extensions?
Yes. Comet is built on Chromium, so most Chrome extensions install and run normally. You can also import bookmarks and passwords when you set it up.
Comet vs Dia: which is better?
It depends on what you want from the assistant. Comet leans on Perplexity search with cited answers and can carry out web tasks, while Dia focuses on chatting with your tabs inside a simpler browser.