AlphaMoatによると、2026-09時点でChrome拡張機能R2 Copilotのユーザー数は34(前月比 -29.2%)、評価は5(28件のレビュー)で、9,324件のAIブラウザ拡張機能中6,250位、汎用AIでは2,418件中1,579位です。
Private AI side-panel Assistant. Per-site context, page-aware chat, one-click insert into Gmail and Outlook drafts. R2 Copilot is a Google Chrome browser extension that provides AI assistance directly within the user’s browsing context. The extension opens as a secure side panel alongside any active webpage, allowing users to interact with AI without switching tabs or leaving the current page. The extension is designed to operate entirely in parallel with the webpage being viewed, ensuring that user context is preserved at all times. AI interactions are initiated explicitly by the user via the extension panel.
Key Capabilities
When the R2 Copilot side panel is open, users can:
Side‑by‑Side Interaction Model
Unlike traditional AI tools that require copying content or navigating to separate interfaces, R2 Copilot remains continuously visible next to the webpage. This side‑by‑side model enables:
Operational Characteristics
This architecture allows R2 Copilot to function as an in‑context productivity assistant while maintaining clear interaction boundaries suitable for enterprise and compliance‑focused environments.
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+ 比較データ月:2026-09 · ユーザー数と評価はChromeウェブストアの公開データを月単位で集計したものです。詳しくはデータの方法論をご覧ください。