ChatGPT拡張
導入は早いが、コンテキストは選択範囲に限られ、タブ管理は手動。
GPT内蔵 · Agent Mode · Mac/Windows無料
Browser with ChatGPT Built In
TabbitはChatGPTを内蔵した本物のブラウザです。任意のページについて質問し、ClaudeやGeminiに切り替え、Agent Modeに多段階タスクを任せながら閲覧を続けられます。
選ぶ道
ブラウザにChatGPTを内蔵する3つの方法
ChatGPT Atlas
ネイティブサイドバーとスマート検索 — macOS優先、OpenAIモデルのみ。
Tabbit Browser
GPT内蔵、Agent実行、モデル切替、垂直ワークスペースをMac/Windowsで。
使い方
最後まで完了するChatGPT内蔵ワークフロー
- 1
Omniboxから質問
URL、質問、タスクを入力。GPTが現在のページを読み取り — タブ間のコピペ不要。
- 2
@で参照
タブ、スクリーンショット、PDF、コレクションをコンテキストに。
- 3
Agent Modeに引き渡し
チャットだけでは足りないとき、Agentが独立タブグループでフォームや調査を実行。
GPTとその先
ChatGPTに加えて信頼できるモデルも
GPT-5.x
Draft, code, and analyze with OpenAI models inside Tabbit.
Claude Sonnet / Opus
Long-context reasoning alongside GPT — one click away.
Gemini 3.1 Pro
Multimodal search and synthesis without leaving the browser.
DeepSeek & Qwen
Strong regional models when GPT is not the best fit.
Skills shortcuts
Save prompts and automations — type / to rerun ChatGPT workflows.
Agent lanes
Turn GPT plans into executed steps across real websites.
Side by side
ChatGPT内蔵ブラウザ：拡張 vs Atlas vs Tabbit
| 拡張 | ChatGPT Atlas | Tabbit | |
|---|---|---|---|
| ChatGPT / GPT access | Via your ChatGPT account or API | Built-in ChatGPT sidebar | GPT plus Claude, Gemini & regional models |
| Runs as | Overlay on any browser | Standalone Chromium browser | AI-native browser with Agent lanes |
| Page context | Selected text or tab snippet | Ask about the current page | @-reference tabs, screenshots & files |
| Multi-step tasks | Manual copy-paste loops | Limited agent runs | Agent Mode in isolated tab groups |
| Tab organization | Depends on host browser | Standard tabs + ChatGPT panel | Vertical tabs & smart workspaces |
| Desktop platforms | Any browser, any OS | macOS first; Windows rolling out | macOS & Windows — same stack |
| Price to start | Free tier + Plus/API costs | Free with Plus upsell | $0 public beta — models included |
実際の用途
TabbitでChatGPT内蔵を使うシーン
タブ混乱なしの調査
GPTが要約、Agentがソースをグループ化ワークスペースに集約。
ページ文脈で執筆
@でブリーフや競合タブを参照 — 開いている事実に基づいて下書き。
退屈なクリックを自動化
経費、フォーム、構造化データ。Agentがループ処理。
FAQ
よくある質問 — ChatGPT内蔵ブラウザ
Which browser has ChatGPT built in?
ChatGPT Atlas is the official OpenAI browser with ChatGPT built in. Tabbit is another option: it also has GPT built in, plus Claude, Gemini, Agent Mode, and vertical tab workspaces on macOS and Windows — all free during the public beta.
What is the new browser by ChatGPT?
The new browser by ChatGPT is ChatGPT Atlas, a Chromium-based macOS browser with a ChatGPT sidebar. Tabbit offers a similar built-in GPT experience with more models, Agent execution, and Windows support.
Is there a free browser with ChatGPT built in?
Yes. Tabbit is a free browser with ChatGPT built in during its public beta on macOS and Windows. ChatGPT Atlas also has a free tier, though some advanced features require a ChatGPT Plus subscription.
Can I get ChatGPT built into my browser on Windows?
Yes. Tabbit ships the full built-in GPT experience on both macOS and Windows. ChatGPT Atlas is currently macOS-first, with Windows still in development.
How is Tabbit different from ChatGPT Atlas?
Tabbit gives you GPT plus Claude, Gemini, DeepSeek and Qwen in one browser, with Agent Mode that runs multi-step tasks in isolated tab groups. Atlas is focused on ChatGPT and smart search inside a Chromium shell.
Do I need a ChatGPT Plus subscription for Tabbit?
No separate ChatGPT Plus subscription is required to start with Tabbit. The international edition includes access to top models during the free public beta; see tabbitbrowser.com for the current lineup.
Can Tabbit use the page I am viewing as context?
Yes. Type @ in the Omnibox to reference the current tab, other tabs, screenshots, PDFs, or saved collections. ChatGPT answers using your real open pages as context.
What can Agent Mode do with ChatGPT in Tabbit?
Agent Mode turns a ChatGPT plan into executed steps across real websites — fill forms, compare products, compile research, or pull data — while you keep browsing in your own tabs.
ChatGPT内蔵ブラウザをダウンロード
macOS/Windows無料。GPT、Agent Mode、垂直タブ — 招待コード不要。