Cloudflare Builds a New Browser Just for AI Agents

8/23/2026beginner

Source: TechCrunch

この記事の要約

Cloudflareという会社が「Kitesurf」という新しいブラウザを発表しました。これは人間ではなく、AIエージェントが使うために作られたブラウザです。従来のChromiumというブラウザ技術を使わず、ゼロから作られています。人間向けの機能(タブやテーマなど)を省くことで、動きが速く、パソコンの負担も3〜7倍軽くなっています。

話のネタ・雑談に

この話題は、職場で「AIエージェントの使い勝手」について話すきっかけになります。「AIに代わりにネットを見てもらうサービスが増えてきましたが、実は人間用のブラウザをそのまま使わせると、遅くてコストもかかるらしいですよ。だからCloudflareはAI専用の軽いブラウザを作ったそうです」といった話ができます。AIエージェントが今後どんな専用ツールを必要とするかを考える良い例にもなります。

英語本文

Speed:

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Cloudflare, a company known for making websites run faster and more safely, has built a brand-new browser. It is called Kitesurf, and it is not made for humans. It is made for AI agents.

AI agents are computer programs that can browse the internet on their own, clicking buttons and reading pages just like a person would. Until now, most of these agents used Chromium, the same technology behind Google Chrome.

The problem is that Chromium was built for humans, with tabs, themes, and other features that AI agents simply do not need. This makes it slow and expensive for agents to use.

Kitesurf solves this problem by cutting out anything humans need and keeping only what agents need, like reading text and taking screenshots. As a result, it uses three to seven times less computer power than Chromium.

Of course, there is a trade-off. Kitesurf loads pages more slowly and does not work perfectly on every website yet. Still, it is free to use during its beta period, and Cloudflare plans to make the code open to the public in the future.

Vocabulary

browser

Meaning: ブラウザ(ウェブサイトを見るためのソフト)

Example: Most people use a browser to visit websites.

agent

Meaning: (AIの)エージェント、代理で作業するプログラム

Example: An AI agent can book a flight for you automatically.

from scratch

Meaning: ゼロから、一から

Example: The engineers built the new browser from scratch.

lightweight

Meaning: 軽量な、負担の少ない

Example: The new tool is much more lightweight than the old one.

screenshot

Meaning: 画面のキャプチャ、スクリーンショット

Example: The agent takes a screenshot to see what is on the page.

compatible

Meaning: 互換性のある、うまく動く

Example: The browser is compatible with popular automation tools.

trade-off

Meaning: トレードオフ、何かを得るために何かを犠牲にすること

Example: There is a trade-off between speed and page quality.

beta

Meaning: ベータ版、試験公開の段階

Example: The new browser is free to use during its beta period.

Quiz

1. What did Cloudflare release?

2. What is the name of the new browser?

3. How does Kitesurf compare to Chromium in terms of CPU and memory use?

4. What kind of features does Kitesurf leave out, since it is made for AI agents rather than people?

5. What is one trade-off of using Kitesurf, according to the article?

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