YabYab, Yet Another Browser, is a free Mac browser that keeps everything from Arc (tabs down the side, spaces, folders, Split View) and gives your Claude or ChatGPT plan an agent that works in your signed-in tabs.
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.
The short answer
- 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
- 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
At a glance
Yab and Tabbit, side by side.
| What | Yab | Tabbit |
|---|---|---|
| Made by | Serafim Korablev | Lumina Lab (LUMINALAB PTE. LTD., Singapore) |
| Status | Updated | Updated |
| Runs on | Mac | Mac and Windows |
| Phone app | Not yet | Only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned |
| Price | Free; its AI runs on your own Claude or ChatGPT plan | Free with a weekly AI allowance; Pro $30/month |
| AI | An agent that works in pages, on your Claude or ChatGPT plan | An agent that works in pages, on its own AI service |
| Driven by outside agents | MCP and a command line | a command line |
| Engine | WebKit | Chromium |
| Tabs down the side | Yes | Yes |
| Spaces | Yes | Not stated |
| Split View | Yes | Yes |
| Extensions | Chrome Web Store | Chrome Web Store |
| Ad blocker | Built in | Built in |
| Open source | 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. Yab’s agent works in tabs of its own beside yours, signed in as you, on your Claude or ChatGPT plan; Send, Pay and Delete wait for your yes. 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. Yab runs on the Claude or ChatGPT plan you already pay for; the other on its own AI.
Agents like Claude Code and CodexYab leads
Yab can be driven over MCP and a command line, through yab mcp and the yab command, for Claude Code, Codex, Cursor and any MCP client. Tabbit can be driven over a command line, through the Tabbit command line, with a skill for Codex, Claude Code and Cursor.
Tabs and windowsYab leads
Yab has tabs down the side, spaces, Split View, folders in the sidebar and tabs that sleep. Tabbit has tabs down the side, Split View and folders in the sidebar.
Priceeven
Yab: Free; its AI runs on your own Claude or ChatGPT plan. Tabbit: Free with a weekly AI allowance; Pro $30/month.
Where it runsTabbit leads
Yab runs on Mac. Tabbit runs on Mac and Windows. On a Mac, Yab needs macOS 15.4 or later and Tabbit needs macOS 13 or later. Yab has no phone app yet. On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned.
Engine and extensionsa matter of taste
Yab is built on WebKit, the engine Safari uses; Tabbit on Chromium, as Chrome is. Both take extensions from the Chrome Web Store.
Privacyeven
Both have an ad blocker built in. Yab has no account and no server of ours between you and your sites; what your agent reads goes to Anthropic or OpenAI under your account. 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.
Where Tabbit is better
Tabbit comes out ahead on where it runs. It is also the better pick if you:
- Want a free agent browser with a wide choice of models, Chinese ones included
- Want the same AI browser on Windows and Mac
- Want Codex or Claude Code to use your signed-in sessions through its command line
The catch with each
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
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 25, 2026Yab: First release
- 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
- June 9, 2026Tabbit: Version 1.0 released after a 100-day public beta
Questions
Is Yab free?
Yes. Free; its AI runs on your own Claude or ChatGPT plan.
Is Tabbit free?
Yes, with limits on its AI. Free with a weekly AI allowance; Pro $30/month.
Which has an AI agent, Yab or Tabbit?
Both. Yab’s agent works in tabs of its own beside yours, signed in as you, on your Claude or ChatGPT plan; Send, Pay and Delete wait for your yes. 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.
Which runs on Windows, Yab or Tabbit?
Tabbit does. Yab runs on Mac.
Do Yab and Tabbit have phone apps?
Yab has no phone app yet. On the phone, Tabbit: only for its Chinese edition, in Chinese; tabbit.ai lists mobile as planned.
More comparisons
- 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
- 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
Yab, Yet Another Browser.
Free for the Mac. Arc’s sidebar, your own Claude or ChatGPT as the agent, Chrome extensions on WebKit.