Kimi's Chrome extensions bring the agent to the browser you already have open. WebBridge lets CLI agents operate your live Chrome window. ego lite is a browser built for agents: they work in their own Spaces, in parallel, with your logins imported, while your tabs stay yours.
Moonshot's WebBridge and ego lite agree on the important things: agents should run locally, work with your real logged-in sessions, and not be locked to one vendor's agent. The disagreement is architectural: whether the agent shares the window you're using, or gets a workspace of its own.
Because every task gets its own Space (a separate workspace inside the same browser), agents can run in parallel without ever touching the tabs you're using, and everything stays visible while it works.
WebBridge works the opposite way: the agent operates inside the same Chrome or Edge window you already have open (the very window you're trying to use), so you and the agent end up sharing one browser.
WebBridge's agent (even running Kimi's own K3 model at high reasoning effort) works through Chrome DevTools Protocol tool calls: one click, one read, one keystroke at a time. On two real tasks, ranking OpenAI's X posts took WebBridge 4 minutes 57 seconds, and the Expedia flight-booking task took 15 minutes 26 seconds.
ego lite reads the page as a compressed Snapshot and batches several actions into a few lines of JavaScript per turn. On the same two tasks, ego lite finished in 87 seconds and 166 seconds: 3.41x faster and roughly 5.6x faster.
Credit where it's due: WebBridge is free, keeps everything running locally, and works with agents beyond Kimi's own, including Claude Code, Cursor, and Codex. But it's still one browser window shared between you and the agent, one task at a time.
ego lite keeps that same local, open approach and adds parallel Spaces on top, so several tasks can run at once, using whatever agent you already have.
WebBridge really is a bridge: Chrome, the WebBridge extension, and the Kimi desktop app's local service all have to be running and correctly paired before an agent can control a page. Moonshot's own FAQ documents this as a common problem: the extension shows as disconnected if the local service isn't running yet, and actions like snapshot or click can fail if another extension conflicts with WebBridge.
ego lite collapses all of that into a single install, because ego lite is the browser. Import your Chrome profile, run /ego-browser, and there's no separate service to pair and nothing else that can conflict with it.
| 機能 | ego lite | Kimi Chrome extension |
|---|---|---|
| どんなツールか | あなたとエージェントのために作られた Chromium ブラウザ | いま使っている Chrome 向けの拡張機能 |
| エージェントが働く場所 | In its own Space: never the tabs you're using | あなたのライブな Chrome/Edge のウィンドウとセッションの中 |
| 並列タスク | Yes: multiple Spaces run side by side | あなたとエージェントで 1 つのウィンドウを共有 |
| セットアップ | アプリを 1 つインストールし、エージェントで /ego-browser を実行 | Chrome + WebBridge 拡張機能 + Kimi デスクトップアプリのペアリング |
| 対応エージェント | Claude Code、Codex、Cursor、Gemini CLI、コードを書く任意の CLI エージェント | Kimi Code CLI, Claude Code, Cursor, Codex, also agent-agnostic |
| エージェントがページをどう読み取り・操作するか | @N ref 付きの圧縮 Snapshot。1 ターンごとにバッチ実行の JavaScript | CDP 経由で公開されるブラウザ操作。エージェントが 1 つずつ呼び出します |
| ログイン済みサイト (SSO、2FA) | Yes: one-click Chrome profile import | Yes: it drives your already-signed-in browser |
| Reliability | One install, no pairing step, nothing else to conflict with | Moonshot's own FAQ documents disconnects when the local service isn't running and action failures from conflicts with other extensions |
| Speed on a real task | 87s vs WebBridge's 4:57 on the same X-research task; 166s vs WebBridge's 15:26 on the same Expedia flight task | Reasons and calls a tool for every click and keystroke: slower on both real tasks tested |
| データの所在 | Local: data stored on your machine | Local: execution and page content stay on device |
| 価格 | 無料、サブスクリプションなし | 拡張機能は無料。Kimi 自身のエージェントには別途料金体系があります |
If WebBridge already connects your CLI agent to a browser, you know the workflow. ego lite keeps it and removes the sharing and the pairing.
Download ego lite and import your Chrome profile in one click. The logged-in sessions WebBridge borrows from your window come along as real profile state.
エージェントに貼り付ける
/ego-browser Open ego.app and join the waitlist
Claude Code、Codex、Cursor、または WebBridge に向けていた CLI エージェントの中で /ego-browser を実行します。拡張機能もデスクトップアプリのペアリングも不要です。
Re-run your last WebBridge task and keep using your own browser while it executes: the agent works in its Space, you work in yours.
要約して質問する読書ワークフローが気に入っているなら、Kimi Explorer は残して構いません。ego lite が置き換えるのは「エージェントがブラウザを操作する」レイヤーであって、ページアシスタントではありません。
無料で Mac 上で動作し、ワンクリックで Chrome のプロファイルをインポートできます。Claude Code、Codex、Cursor、コードを書くあらゆる CLI エージェントに対応しています。
Still weighing your options? See how Kimi Chrome extension compares with the other tools in the same space.
Moonshot AI ships two Chrome extensions under the Kimi name. Kimi Explorer is a reading assistant: summarize the page you're on, ask questions about it, get writing help without switching tabs. Kimi WebBridge, released in May 2026, is the agent one; it pairs with the Kimi desktop app to let CLI agents (Kimi Code CLI, Claude Code, Cursor, Codex) operate your existing Chrome or Edge window locally, with cookies and logins intact and page content staying on your device. WebBridge's local-first, agent-agnostic design is genuinely good, and philosophically the closest thing to ego lite in the extension world.
Kimi Explorer is a page assistant: summarize the article you're reading, ask questions about it, draft text. Kimi WebBridge is agent infrastructure: paired with the Kimi desktop app, it lets CLI agents operate your Chrome or Edge window locally. If you're comparing against ego lite, WebBridge is the relevant one.
Yes, if you want the same local, agent-agnostic approach without sharing your window or the three-piece pairing. ego lite runs agents in their own Spaces in parallel, imports your Chrome profile so logins persist, and needs one app instead of an extension-plus-desktop-app pair. WebBridge wins if you specifically want agents driving the exact browser you already have installed, unchanged.
Moonshot's own help center documents two common failure modes worth knowing before you rely on it: the extension shows disconnected when the local Kimi service isn't running yet, and actions like snapshot or click can fail when another installed extension (scraping tools, AI assistants) conflicts with WebBridge, which the FAQ suggests troubleshooting by disabling other extensions one at a time. ego lite has no local service to keep running and no extension it can conflict with, since it is the browser.
Any CLI agent that writes code can plug in through the open-source, MIT-licensed ego-browser shell. That includes custom agents. Claude Code, Codex, Cursor, Gemini CLI, and Opencode are the documented entry points; a code-writing CLI agent like Kimi's connects the same way.
In ego lite, yes: agents run tasks in their own Spaces and never take the tabs you're using, and you can watch or take over any Space. With WebBridge, the agent operates the window you have open, so an active task and active browsing compete for the same session.
Yes: free, no subscription, data stored locally, and the ego-browser shell is MIT-licensed open source. You bring your own agent and pay only whatever that agent already costs you.