Perplexity Comet: The Free AI Browser Guide for 2026
Comet spent its first three months locked behind Perplexity's $200-a-month Max plan. It's now free worldwide, with no subscription required at all. Here's what the browser actually does once you install it, how its AI sidebar and agent mode compare to Chrome and OpenAI's Atlas, and where it's worth being careful before you hand it your passwords.
Comet layers an AI assistant directly into the browser window instead of running it as a separate app or extension.
Comet Is a Real Browser With an AI Assistant Built In, Not Bolted On
Comet is Perplexity's Chromium-based browser, and the distinction that actually matters is where the AI lives. Most "AI browsing" tools are extensions sitting on top of Chrome, reading the page and answering in a popup. Comet's assistant is a permanent sidebar that travels with you across every tab, can summarize what's on screen, answer questions about the page you're viewing, and — in its agent mode — take actions like filling forms or comparing prices without you doing the clicking.
It launched in July 2025 exclusively to Perplexity Max subscribers paying $200 a month, which kept it out of reach for most people. Perplexity opened it to $20/month Pro subscribers a few months later, then made it fully free worldwide. The company has said the free access isn't a limited-time promotion, so there's no obvious reason to expect a paywall to come back.
The Features Worth Knowing About
The sidecar assistant stays visible while you browse, rather than opening in a separate window.
Comet's Shopping tool can compare prices and options across retailers automatically once given a task.
Sidecar Assistant
Answers questions about whatever page you're currently on, summarizes long articles, and can pull information from earlier in your browsing session without you re-explaining context.
Agent Mode
Lets Comet navigate pages, fill out forms, and complete multi-step tasks like comparing flight prices — genuinely useful, but worth supervising rather than leaving fully unattended on anything sensitive.
Spaces
Organizes ongoing projects or research threads so context carries across sessions instead of resetting every time you open a new tab.
Discover & Shopping
A personalized news feed plus a shopping assistant that compares prices and deals across retailers — similar in spirit to what OpenAI's Pulse and Atlas offer inside ChatGPT.
Comet vs Chrome vs ChatGPT Atlas
| Browser | Price | AI Integration | Agent Actions |
|---|---|---|---|
| Comet | Free | Built-in sidebar, always available | Yes, free tier |
| Google Chrome | Free | Gemini available as add-on, not core | Limited |
| ChatGPT Atlas | Free (agent mode needs Plus/Pro) | Built-in sidebar, ChatGPT-based | Paid tiers only |
| Opera Neon | Free | Built-in, browser-native | Yes, free tier |
The practical difference is less about price and more about which assistant you already trust. If you use Perplexity for search day to day, Comet extends that experience into full browsing. If you're already paying for ChatGPT Plus, Atlas's agent mode is already included in that subscription.
What to Watch Before You Rely on Agent Mode
Handing an AI assistant the ability to click, type, and submit forms on your behalf is a genuinely different risk profile than a browser that only displays pages. Comet's agent mode can complete real actions — booking, purchasing, form submission — which means a misread instruction or a manipulated page can cause a real-world mistake, not just a wrong answer in a chat window.
None of that means avoid it. It means treat agent mode the way you'd treat any new automation: start with low-stakes tasks like comparing prices or summarizing a long page, and hold off on giving it free rein over banking, healthcare, or anything involving stored payment information until you've seen how it behaves on things that don't matter much if they go wrong.
What Comet Does and Doesn't Solve
- Summarizing long articles or research threads without leaving the page
- Comparing prices and options across multiple retailer tabs automatically
- Maintaining context across a multi-session research project via Spaces
- Free, worldwide access with no subscription or trial period attached
- Agent mode reliability varies by site — complex or unusual layouts can trip it up
- Switching your default browser is a real habit change, not a five-minute decision
- Chrome's extension ecosystem is still larger and more mature than Comet's
- Autonomous browsing agents are a newer attack surface worth understanding before trusting fully
Worth Trying, Especially Since It Costs Nothing
A genuinely capable free browser, with agent features that still deserve supervision.
Comet's core browsing experience — Chromium-based, fast, familiar — means there's no real downside to installing it alongside your current browser. The sidecar assistant alone is useful enough to justify keeping it around for research and reading. Agent mode is the more interesting and more unproven part: genuinely useful when it works, worth watching closely while you learn its limits.
Frequently Asked Questions
Is Perplexity Comet actually free now?
Yes. Comet launched exclusively to Perplexity's $200/month Max subscribers, then opened to $20/month Pro users, and is now available worldwide at no cost to anyone with a Perplexity account. Perplexity has said the free access is permanent, not a limited promotion.
Is Comet safe to use for browsing and shopping?
Comet is built on Chromium, the same open-source engine behind Chrome, so its baseline security is comparable. The added risk comes from its agentic features — letting an AI assistant fill forms, make purchases, or navigate sites on your behalf introduces a new attack surface that a passive browser doesn't have, so it's worth reviewing what permissions you grant it and avoiding agent mode on sites handling sensitive financial or medical information until you're familiar with how it behaves.
How is Comet different from ChatGPT Atlas?
Both are Chromium-based browsers with an AI assistant built in rather than bolted on as an extension. Comet is built around Perplexity's search-first approach and has been free longer; Atlas is built around ChatGPT's conversational interface and gates its most powerful agent mode behind a paid ChatGPT Plus or Pro subscription. If you already use Perplexity for search, Comet fits naturally; if you're already paying for ChatGPT Plus, Atlas may make more sense.
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