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Side-by-side comparison ยท AI Browsers & Agents

Manus vs Opera GX vs Comet

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Manus

3.7

From From $20/mo

Opera GX

3.7

Free to start

Best overall

Comet

3.9

From $5/mo

Comparing 3 tools, the maximum.

At a glance

Pick it if: People who want to hand off whole tasks and don't want to build the automation themselves.

Best value

Pick it if: Gamers and streamers who also work in their browser and want free AI help plus control over how much of their PC the browser takes.

Best overall

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

Comet scores highest overall, but Opera GX gives you more for your money. Which one is right comes down to what you value most.

Overview

AttributeManusOpera GXComet
In one lineA general-purpose agent that takes a goal and works through it in its own browser.Opera's free gaming browser with resource limits, mods and a free AI sidebar.Perplexity's free web browser with an assistant that reads your tabs and does tasks.
Pricing modelFreemiumFreeFreemium
Starting priceFrom $20/moFree$5/mo
Free plan Yes Yes Yes
Works with Claude Code Yes No No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeManusOpera GXComet
Overall rating3.73.73.9Winner
Ease of useHow quickly someone non-technical gets value from it.
4.5
4.0
4.5
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.0
3.0
4.0
Output qualityHow good the results are before you fix them.
3.5
3.5
3.5
Value for moneyWhat you get for the price, including the free plan.
3.0
4.5
4.0
Speed & reliabilityHow fast it is and how often it falls over.
3.5
3.5
3.5

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeManusOpera GXComet
Access & platform
Free plan Yes Yes Yes
Mobile app Yes Yes Yes
Desktop app Yes Yes Yes
Browser extension Yes No Yes
API access Yes No No
Teams & business
Team workspace Yes No Yes
Enterprise plan or SSO Yes No Yes
Connects to other apps Yes Yes Yes
Open source or self-hosted No No No
AI abilities
Works with your files Yes Yes Yes
Understands images Yes Yes Yes
Makes images Yes Yes No
Makes video Yes No No
Writes code Yes No No
Runs agents or automations Yes No Yes
Learns your brand or style No No No
Works in many languages Yes Yes Yes
Capabilities score15/ 178/ 1711/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeManusOpera GXComet
Plans

Free

Free

Quick questions and seeing what it can do.

Free

Free

Everyone. There is no paid tier for the AI.

FreeOur pick

Free

Everyday browsing with an assistant for summaries and questions.

ProOur pick

From $20/mo, less with yearly billing

Anyone who wants to hand off real research and build jobs.

Free with an Opera accountOur pick

Free

Anyone who wants saved chats and more images.

Comet Plus

$5/mo

Readers who want partner publishers' paywalled articles.

Pro (higher tier)

From $40/mo, less with yearly billing

Heavier users and anyone publishing websites with it.

Perplexity Pro

$20/mo, or $200/yr

Anyone who wants the agent to do tasks for them.

Team

From $20/seat/mo

Teams that want shared credits and admin controls.

Perplexity Max

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

Heavy users running many tasks in the background.

Enterprise

Custom

Large organisations.

Which plan to pickTry the Free plan for a week to get a feel for how many credits a real task uses, then move to the $20 Pro tier. Only go higher if you run out most months or you want it to publish websites for you.It's free. Sign in with a free Opera account if you want your chats saved and 100 images a day. Nothing to buy for the AI.Use it free: the sidebar assistant alone is worth having, and most people never need more. Pro makes sense if you want Perplexity's research tools anyway, but don't buy it just for the browser agent, since Pro's credits are a one-off bundle. Nobody needs Max just for the browser.

Key features

AttributeManusOpera GXComet
Standout features
  • Autonomous agent
  • Wide Research
  • Slides, websites and docs
  • Scheduled automations
  • My Browser
  • Mobile and desktop apps
  • Opera AI
  • GX Control
  • Hot Tab Killer
  • Mods and themes
  • GX Corner
  • Browser Connector
  • Comet Assistant
  • Browser control
  • Work mode
  • Works like Chrome
  • On every device
  • Comet Plus

Pros and cons

AttributeManusOpera GXComet
Pros
  • You describe the result, not the steps
  • Strong at research, reports and first-draft decks
  • Scheduled tasks turn it into a hands-off research assistant
  • Apps for phone, desktop and browser
  • Free AI with no account needed
  • GX Control keeps the browser from slowing your PC
  • Same AI quality as Opera One
  • Mods, GX Corner and streaming sidebar that no other browser has
  • Free VPN and an ad blocker that now takes uBlock lists
  • Free on Mac, Windows, Android and iPhone
  • Feels like Chrome, with your extensions and bookmarks
  • Answers about the page come with sources you can check
  • Comet Plus is included with Perplexity Pro and Max
  • Good at summaries and comparing tabs
Cons
  • Credits are hard to predict and one big task can drain the monthly allowance
  • Output needs checking, and it can waste credits on dead ends
  • Not suited to automations that must run the same way every time
  • Few direct app connections compared with the automation tools
  • Pricing page does not load without JavaScript, so plan details are hard to confirm
  • No agent: it can't click or fill in forms for you
  • Heavy at idle unless you set the limits
  • Gamer styling and game promos can feel out of place for work
  • A GX Mods security bug was found and fixed in 2026, so keep it updated
  • Repeated prompt-injection attacks found by researchers in 2025 and 2026; risky with logged-in accounts
  • The agent is slow and sometimes gets stuck or gives up halfway
  • Browser control moved behind Computer credits in September 2026, so Pro users lost an included feature
  • Paying users complain of quiet limits, model downgrades and features being removed
  • Amazon sued over its shopping agent, and the case is still running

Who each one is for

AttributeManusOpera GXComet
Best for
  • Multi-step research with a report at the end
  • Lead lists and data gathering
  • Scheduled recurring tasks
  • Quick prototypes and slide decks
  • Working and gaming on the same PC without slowdown
  • Summarising guides, patch notes and YouTube videos
  • Quick answers about a page without leaving it
  • Free AI wallpapers and images
  • Summarising long pages, PDFs and videos
  • Comparing products or suppliers across tabs
  • Quick research while you browse
  • Hands-off form filling and bookings (Pro and Max)
You'll find it used by
  • Founders
  • Marketers
  • Researchers
  • Consultants
  • Gamers
  • Streamers
  • Students
  • Creators
  • Researchers
  • Marketers
  • Students
  • Founders

Questions people ask

Which is better, Manus, Opera GX or Comet?

Comet scores highest overall in our ratings (Manus 3.7/5, Opera GX 3.7/5 and Comet 3.9/5). Manus is best for multi-step research with a report at the end and lead lists and data gathering. Opera GX is best for working and gaming on the same PC without slowdown and summarising guides, patch notes and YouTube videos. Comet is best for summarising long pages, PDFs and videos and comparing products or suppliers across tabs.

Which is cheaper, Manus, Opera GX or Comet?

Manus: There's a free plan, and paid plans start at From $20/mo. Opera GX: It's free to use. Comet: There's a free plan, and paid plans start at $5/mo.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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