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Review · 2026-03-15

Microsoft Copilot vs. ChatGPT 2026: Office AI Head-to-Head Test

Microsoft Copilot vs. ChatGPT 2026 in a direct comparison: strengths, weaknesses, and pricing of both AI tools — so you know which one is right for you or your team.

Rated according to our test methodology.

Microsoft Copilot vs. ChatGPT 2026 in a direct comparison: strengths, weaknesses, and pricing of both AI tools — so you know which one is right for you or your team.

Microsoft Copilot and ChatGPT may sound similar — but they are fundamentally different tools. Copilot is deeply integrated into Microsoft 365 and turns your existing Office documents and emails into AI context. ChatGPT is the most powerful all-purpose AI assistant. Which tool is worth it for you or your organization?

Microsoft Copilot vs. ChatGPT: Quick Comparison

Criterion

Microsoft 365 Copilot

ChatGPT Plus

Price

€30/user/month (+ M365)

€20/month

Office Integration

Native in Word/Excel/Teams

No native integration

Own company data

Yes (Microsoft Graph)

No (without plugin)

Model

GPT-4 Turbo

GPT-4o / o1

Web search

Yes (Bing)

Yes

Image generation

Yes (DALL-E 3)

Yes (DALL-E 3)

Data privacy

EU data centers available

US servers

Free version

Yes (limited)

Yes (GPT-4o mini)

Our verdict

★★★★ (M365 users)

★★★★½ (General)

Microsoft Copilot: AI Directly in Office

Microsoft 365 Copilot is the most ambitious attempt to integrate AI into the enterprise workday. Embedded directly in Word, Excel, PowerPoint, Outlook, and Teams, Copilot can summarize emails, explain Excel formulas, create meeting minutes, and generate presentations — all in the context of your real company data via Microsoft Graph.

The free Microsoft Copilot (copilot.microsoft.com) offers a stripped-down version with Bing integration for all Windows users. Full M365 integration requires the paid add-on (€30/user/month).

Strengths of Microsoft Copilot

  • Deep integration into Word, Excel, Teams, Outlook
  • Access to your own company data via Microsoft Graph
  • Meeting summaries and action items in Teams
  • Generate PowerPoint presentations directly from text
  • EU data centers for GDPR-compliant processing
  • Copilot Studio for building custom AI agents

Weaknesses of Microsoft Copilot

  • Expensive: €30/user/month on top of M365
  • Requires a Microsoft 365 Business subscription
  • Quality heavily dependent on data quality within the organization
  • Less powerful outside of Office applications

ChatGPT: The Universal AI Assistant

ChatGPT (GPT-4o) remains the most versatile AI assistant in 2026. Without Microsoft ecosystem dependencies, with the powerful o1 model for complex reasoning, and a vast ecosystem of custom GPTs, ChatGPT is the go-to choice for flexible, creative, and technical tasks.

Strengths of ChatGPT

  • Broad applicability independent of specific tools
  • o1 model for deep reasoning and problem-solving
  • Vast Custom GPT ecosystem
  • Superior creative text generation
  • Lower base cost (€20/month)
  • Image generation, code, analysis, and voice in a single app

Weaknesses of ChatGPT

  • No native Office integration
  • No access to your own company data without a plugin
  • US servers (no EU data center)
  • No Teams integration for meetings

Verdict: Who Should Use What?

Microsoft 365 Copilot is worth it for organizations that work heavily within the Microsoft ecosystem and are willing to invest €30/user/month for Office-integrated AI. ChatGPT Plus is the better choice for individuals, creative professionals, and anyone seeking maximum flexibility at a lower cost. For most users, we recommend: start with ChatGPT and evaluate Copilot if Teams and Outlook are central to your workflow.

Frequently Asked Questions (FAQ)

What is the difference between Microsoft Copilot and ChatGPT?

Microsoft Copilot is integrated into Microsoft 365 (Word, Excel, Teams, Outlook) and uses GPT-4. ChatGPT is a standalone AI assistant without deep Office integration, but with greater flexibility and a broader range of models.

Is Microsoft Copilot free?

There is a free Microsoft Copilot available at copilot.microsoft.com. Microsoft 365 Copilot (deeply integrated into Office) costs €30/user/month on top of the M365 subscription.

Is Microsoft 365 Copilot worth it for businesses?

For teams that rely heavily on Word, Excel, and Teams, Copilot can be worthwhile. The added value lies in context-aware use of existing company data. The high cost (€30/user) makes an ROI analysis advisable.

Can ChatGPT work with Word and Excel?

ChatGPT can analyze files and generate text for Word or Excel, but without native integration. Microsoft Copilot is directly integrated into the ribbon of Word, Excel, and Outlook and understands the context of the open document.

Further Tests & Comparisons

Microsoft Copilot vs. ChatGPT 2026: Office AI Head-to-Head Test — KI-Radar