YabTabbit vs Comet
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.
Comet is Perplexity’s free Chromium browser for Mac, Windows, iPhone and Android, with Perplexity’s search and an assistant that can act on pages for you.
The short answer
- 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
- if you use Perplexity and want its search and agent in the browser
- if you want one AI browser on Mac, Windows, iPhone and Android
- if you want a free Chromium browser with an ad blocker built in
- 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 Comet, with Yab beside them for a Mac.
| What | Tabbit | Perplexity Comet | Yab |
|---|---|---|---|
| Made by | Lumina Lab (LUMINALAB PTE. LTD., Singapore) | Perplexity | Serafim Korablev |
| Status | Updated | Updated | Updated |
| Runs on | Mac and Windows | Mac, Windows, iPhone and Android | Mac |
| Phone app | Only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned | iPhone, iPad and Android; on iPhone it syncs bookmarks and history with desktop Comet | Not yet |
| Price | Free with a weekly AI allowance; Pro $30/month | Free; Comet Plus $5/month; Perplexity Pro $20/month or Max $200/month for more AI and agent use | Free; its AI runs on your own Claude or ChatGPT plan |
| AI | An agent that works in pages, on its own AI service | An agent that works in pages, on its own AI service | An agent that works in pages, on your Claude or ChatGPT plan |
| Driven by outside agents | a command line | No | MCP and a command line |
| Engine | Chromium | Chromium | WebKit |
| Tabs down the side | Yes | Not stated | Yes |
| Spaces | Not stated | Not stated | Yes |
| Split View | Yes | Yes | Yes |
| Extensions | Chrome Web Store | Chrome Web Store | Chrome Web Store |
| Ad blocker | Built in | Built in | Built in |
| Open source | No | No | No |
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.
AIa matter of taste
Both have an agent that works 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. Comet’s assistant answers about pages and open tabs and can click, fill forms and navigate for you, asking before it acts.
Agents like Claude Code and CodexTabbit leads
Tabbit can be driven over a command line, through the Tabbit command line, with a skill for Codex, Claude Code and Cursor. Comet has no MCP server or command line for outside agents.
Tabs and windowsTabbit leads
Tabbit has tabs down the side, Split View and folders in the sidebar. Comet has Split View, folders in the sidebar and tabs that sleep.
Priceeven
Tabbit: Free with a weekly AI allowance; Pro $30/month. Comet: Free; Comet Plus $5/month; Perplexity Pro $20/month or Max $200/month for more AI and agent use.
Where it runsComet leads
Tabbit runs on Mac and Windows. Comet runs on Mac, Windows, iPhone and Android. On a Mac, Tabbit needs macOS 13 or later and Comet 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, Comet: iPhone, iPad and Android; on iPhone it syncs bookmarks and history with desktop Comet.
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.
Privacyeven
Both have 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. Comet keeps history, cookies and passwords on your device unless you sync; the assistant sends the page it needs to Perplexity, kept up to 30 days.
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
Perplexity Comet
- Free use of the assistant is limited; more agent use is Pro at $20 or Max at $200
- No MCP server or command line from Perplexity for coding agents
- Researchers showed prompt-injection attacks on its agent in 2025 (CometJacking)
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
- August 4, 2026Comet: Ninth Circuit vacated the injunction Amazon won against Comet’s shopping agent
- June 9, 2026Tabbit: Version 1.0 released after a 100-day public beta
- March 18, 2026Comet: Comet for iPhone released
- October 2, 2025Comet: Browser made free for everyone worldwide
Questions
Is Tabbit free?
Yes, with limits on its AI. Free with a weekly AI allowance; Pro $30/month.
Is Perplexity Comet free?
Yes, with limits on its AI. Free; Comet Plus $5/month; Perplexity Pro $20/month or Max $200/month for more AI and agent use.
Which has an AI agent, Tabbit or Comet?
Both. 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. Comet’s assistant answers about pages and open tabs and can click, fill forms and navigate for you, asking before it acts.
Do Tabbit and Comet run on Windows?
Yes, both. Tabbit runs on Mac and Windows; Comet on Mac, Windows, iPhone and Android.
Do Tabbit and Comet have phone apps?
On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned. On the phone, Comet: iPhone, iPad and Android; on iPhone it syncs bookmarks and history with desktop Comet.
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 home page and FAQ
- Tabbit membership plans
- Tabbit release notes (What’s New)
- Tabbit CLI quick start (2026-09-18)
- Tabbit quick start guide
- Tabbit privacy policy
- App Store: Tabbit by Beijing KuXun Interactive Technology, universal iPhone and iPad, Simplified Chinese only, first released Jun 5, 2026
- Xiaomi App Store: Tabbit Android app, com.tabbit.ai, v0.52.9, updated Oct 9, 2026
- Tabbit China site, mobile download page (links the App Store app)
- Tabbit China membership page: bookmarks, passwords and chats sync on macOS, Windows, iOS, Android, HarmonyOS
- Beijing News (Jun 9, 2026): Tabbit 1.0 launch, mobile testing begun
- Comet help: Operating System Requirements
- Comet help: What is Comet’s browser engine?
- Comet help: Browser features (split view, ad block, extensions, profiles)
- Comet help: Import data
- Comet help: Key settings (memory saver, tab groups)
- Comet help: Built-in password manager
- Comet help: Local data and device storage
- Comet help: Assistant privacy and data use
- Comet Quick Start Guide (Chrome import)
- Comet Assistant vs Agent
- Perplexity changelog Nov 14, 2025 (assistant asks approval before acting)
- Perplexity blog: Introducing Comet Plus ($5)
- Perplexity help: Perplexity Max
- Perplexity help: Local and remote MCPs
- App Store listing (iOS 18+, Pro $20, Max $200)
- TechCrunch: Comet now free (Oct 2, 2025)
- TechCrunch: Comet on Android (Nov 20, 2025)
- MacRumors: Comet on iPhone (Mar 18, 2026)
- Jones Day: Ninth Circuit vacates injunction (Aug 4, 2026)
- LayerX: CometJacking
- Community comet-mcp (not by Perplexity)
- Google Play: Comet: AI Browser & Assistant (updated Sep 24, 2026)
- Comet Help Center: Sync Between Devices
- Perplexity changelog: Comet iOS launch, pair mobile and desktop with device sync (Mar 27, 2026)
- Perplexity blog: Comet is now available on iOS
- Perplexity blog: Comet for Android is here
- MacStories: Comet for iOS review (sync chain, iPad version)
- Yab Manual: Bringing in from another browser
- Yab Manual: Connecting Claude or ChatGPT
- Yab Manual: Extensions
- Yab Manual: Yab’s tools over MCP
- Yab Manual: Privacy
Yab, Yet Another Browser.
Free for the Mac. Arc’s sidebar, your own Claude or ChatGPT as the agent, Chrome extensions on WebKit.