Microsoft 365 Copilot

Microsoft 365 Copilot

An enterprise Office AI assistant that turns Microsoft 365 work context into documents, analysis, and actions

AIワークスペースMicrosoft 365Enterprise AIOffice CopilotPaid only

Microsoft 365 Copilot is an enterprise AI assistant embedded across Word, Excel, PowerPoint, Teams, and Outlook. It combines large language models with permission-aware Microsoft Graph context—including emails, documents, meetings, and chats—to draft content, analyze data, summarize collaboration, and turn natural-language requests into practical Office work.

更新日

2026-09-03

対応プラットフォーム

Web / Windows / Microsoft 365 / Teams / Outlook

有料

Copilot Chat: available at no additional cost for many users with eligible Microsoft 365 commercial licenses, with capabilities depending on the tenant and license.Microsoft 365 Copilot: $30/user/month on an annual commitment for enterprise plans.Business plans and promotions may be approximately $18–$21/user/month when billed annually for organizations with up to 300 users. A qualifying Microsoft 365 or Office 365 license is required; current eligibility, regional pricing, and plan terms should be confirmed with Microsoft.

* 料金は参考情報です。最新の料金は公式サイトをご確認ください

Microsoft 365 Copilot
microsoft.com

主な機能

  • Office drafting

    Turn prompts and existing work context into drafts for Word documents, PowerPoint decks, and Outlook messages.

  • Excel analysis

    Ask questions about spreadsheets, identify trends, build formulas, and generate charts with natural language.

  • Meeting recap

    Summarize Teams meetings, chats, and related files into key points, decisions, and action items.

  • Work context search

    Use permission-aware Microsoft Graph context to connect relevant emails, documents, conversations, and meetings.

おすすめ用途

Enterprise managers and project leads

Summarize Teams meetings, connect email and document context, and turn project updates into structured reports and tasks.

Knowledge workers and analysts

Use natural language in Word and Excel to draft documents, model data, create charts, and extract business insights.

Organizations standardizing Microsoft 365 workflows

Apply governed AI assistance across familiar Office apps while keeping access aligned with existing permissions.

長所

  • Deep integration with familiar Microsoft 365 apps
  • Uses organizational context under existing permissions
  • Reduces repetitive document, meeting, and spreadsheet work

注意点

  • Requires an eligible Microsoft 365 or Office 365 license
  • Enterprise pricing can be significant at scale
  • Generated analysis and drafts still require human review

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