Yab

Tabbit vs Opera

We make Yab, the third column.facts checked Oct 9 ↓

Tabbit is a free Chromium AI browser for Mac and Windows from Lumina Lab in Singapore, with chat, an agent mode and a choice of many vendors’ models.

Opera One is Opera’s free Chromium browser on every desktop and phone, with a free browser VPN, an ad blocker, messengers in the sidebar and Opera AI. Its agents are in a separate browser, Opera Neon.

The short answer

Pick Tabbit
  • if you want a free agent browser with a wide choice of models, Chinese ones included
  • if you want the same AI browser on Windows and Mac
  • if you want Codex or Claude Code to use your signed-in sessions through its command line
Pick Opera
  • if you want a free browser VPN and an ad blocker built in
  • if you keep WhatsApp, Telegram or Slack open in a sidebar
  • if you sort work into workspaces, Tab Islands and split screen
Or Yabours
  • if you miss Arc and want spaces, pins and folders kept, on a Mac
  • if you already pay for Claude or ChatGPT and want it to work in your signed-in tabs
  • if you want Claude Code, Codex or Cursor to drive a real browser over MCP

At a glance

Tabbit and Opera, with Yab beside them for a Mac.

Tabbit vs Opera
WhatTabbitOperaYab
Made byLumina Lab (LUMINALAB PTE. LTD., Singapore)OperaSerafim Korablev
StatusUpdatedUpdatedUpdated
Runs onMac and WindowsMac, Windows, Linux, iPhone and AndroidMac
Phone appOnly for its Chinese edition, in Chinese; tabbit.ai lists mobile as plannediPhone, iPad and Android; syncs tabs, bookmarks and Speed Dials with an Opera accountNot yet
PriceFree with a weekly AI allowance; Pro $30/monthFree, with Opera AI and a browser VPN; VPN Pro is paidFree; its AI runs on your own Claude or ChatGPT plan
AIAn agent that works in pages, on its own AI serviceChat about pages, on its own AI serviceAn agent that works in pages, on your Claude or ChatGPT plan
Driven by outside agentsa command lineMCPMCP and a command line
EngineChromiumChromiumWebKit
Tabs down the sideYesA settingYes
SpacesNot statedYesYes
Split ViewYesYesYes
ExtensionsChrome Web StoreChrome Web StoreChrome Web Store
Ad blockerBuilt inBuilt inBuilt in
Open sourceNoNoNo

Checked October 9, 2026 on each maker’s own pages, linked under Sources. Prices are per month, in US dollars.

Where they differ

What separates them, area by area. Where one plainly has more, it says who; where it comes down to taste, it says so.

AITabbit leads

Only Tabbit has an agent that clicks, types and finishes tasks in your pages. Tabbit chats with your tabs, files and screenshots, and its agent mode runs multi-step tasks in tab groups of its own, on GPT, Claude, Gemini, DeepSeek, Kimi, Qwen or GLM. Opera AI answers about the page, Tab Islands, videos and files, and makes images, with no account; it doesn’t click or fill forms.

Agents like Claude Code and Codexeven

Tabbit can be driven over a command line, through the Tabbit command line, with a skill for Codex, Claude Code and Cursor. Opera can be driven over MCP, through Browser Connector, in early testing, which lets ChatGPT or Claude read and open tabs but not click or type.

Tabs and windowseven

Tabbit has tabs down the side, Split View and folders in the sidebar. Opera has tabs down the side as a setting, spaces, Split View, folders in the sidebar and tabs that sleep.

PriceOpera leads

Tabbit: Free with a weekly AI allowance; Pro $30/month. Opera: Free, with Opera AI and a browser VPN; VPN Pro is paid.

Where it runsOpera leads

Tabbit runs on Mac and Windows. Opera runs on Mac, Windows, Linux, iPhone and Android. On a Mac, Tabbit needs macOS 13 or later. On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned. On the phone, Opera: iPhone, iPad and Android; syncs tabs, bookmarks and Speed Dials with an Opera account.

Engine and extensionsa matter of taste

Both are built on Chromium, as Chrome is, so sites work as they do in Chrome. Both take extensions from the Chrome Web Store.

PrivacyOpera leads

Tabbit has an ad blocker built in. Tabbit sends prompts and pages you share to the model vendor you pick, on servers in Singapore or your region; its maker says it doesn’t train on your data. Opera has an ad blocker built in and a VPN. Opera AI sends only the current page or Tab Island when you write with page access on; Opera says it doesn’t send your history.

What their pages don’t lead with

Real limits, from the makers’ own words and our own use.

Tabbit

  • Top models and heavy agent use need Pro at $30 a month
  • The free AI is a weekly allowance, larger only if Tabbit is your default browser
  • No Linux or phone apps yet
  • No MCP server documented, only its command line

Opera

  • Opera AI only chats and sums up; agents need Opera Neon at $19.90 a month
  • The free VPN covers the browser only, with three locations
  • The ad blocker is off until you turn it on
  • Browser Connector is in early testing and needs an Opera account

Yab, honestly

  • Mac only: macOS 15.4 or later, no Windows, iPhone or Android
  • New: first released in September 2026
  • Its AI needs a Claude or ChatGPT plan; ChatGPT’s free plan may work with low limits
  • WebKit, as in Safari: a site tested only in Chrome can misbehave
  • Closed source

What changed lately

  • September 8, 2026Tabbit: Tabbit CLI lets coding agents drive the browser with your logins
  • August 21, 2026Tabbit: Version 1.11 dropped macOS 12; macOS 13 or later required
  • July 23, 2026Opera: Vertical tabs shipped to all Opera One users
  • June 9, 2026Tabbit: Version 1.0 released after a 100-day public beta
  • April 16, 2026Opera: Browser Connector lets ChatGPT and Claude read your tabs over MCP (Early Bird)
  • December 11, 2025Opera: Opera AI replaced Aria in Opera One, GX and Air

Questions

Is Tabbit free?

Yes, with limits on its AI. Free with a weekly AI allowance; Pro $30/month.

Is Opera free?

Yes. Free, with Opera AI and a browser VPN; VPN Pro is paid.

Which has an AI agent, Tabbit or Opera?

Tabbit. Tabbit chats with your tabs, files and screenshots, and its agent mode runs multi-step tasks in tab groups of its own, on GPT, Claude, Gemini, DeepSeek, Kimi, Qwen or GLM. Opera AI answers about the page, Tab Islands, videos and files, and makes images, with no account; it doesn’t click or fill forms.

Do Tabbit and Opera run on Windows?

Yes, both. Tabbit runs on Mac and Windows; Opera on Mac, Windows, Linux, iPhone and Android.

Do Tabbit and Opera have phone apps?

On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned. On the phone, Opera: iPhone, iPad and Android; syncs tabs, bookmarks and Speed Dials with an Opera account.

Is there a third option on a Mac?

Yab, Yet Another Browser, is free for the Mac: tabs down the side with spaces, folders and Split View, as in Tabbit; an agent in your signed-in tabs like Tabbit’s, on the Claude or ChatGPT plan you already pay for. Claude Code, Codex and any MCP client can drive it too. It runs on WebKit, the engine Safari uses, and takes Chrome extensions. It is Mac only, and new.

More comparisons

Tabbit vs DiaTabbit vs CometTabbit vs AtlasTabbit vs Opera NeonTabbit vs ChromeTabbit vs SafariTabbit vs EdgeTabbit alternativesYab vs TabbitOpera vs ChromeOpera vs SafariOpera vs EdgeOpera vs FirefoxOpera vs BraveArc vs OperaDia vs OperaOpera alternativesYab vs Opera
Sources, read October 9, 2026. Something out of date? Write to hello@serafimlabs.io and we fix it.

Yab, Yet Another Browser.

Free for the Mac. Arc’s sidebar, your own Claude or ChatGPT as the agent, Chrome extensions on WebKit.

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