ChatGPT Enterprise vs Microsoft 365 Copilot: Complete Comparison (2026)
An in-depth comparison of ChatGPT Enterprise and Microsoft 365 Copilot to help you choose the right tool for your business.
Last updated: November 2026
ChatGPT Enterprise
7.3/10
OpenAI's top workplace tier of ChatGPT, adding agentic work, coding, company knowledge search, and enterprise security and governance controls for large organizations.
Microsoft 365 Copilot
6.6/10
An AI assistant built into Word, Excel, PowerPoint, Outlook and Teams that drafts, summarizes and analyzes work content from an organization's Microsoft 365 data.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 7.3/10 | 6.6/10 |
| Integration | 8/10 | 9/10 |
| Analytics | 7/10 | 6/10 |
| Customization | 7/10 | 6/10 |
| Ease of Use | 8/10 | 7/10 |
| Support | 7/10 | 6/10 |
| Cost | 3/10 | 4/10 |
| Scalability | 9/10 | 9/10 |
| Security | 9/10 | 8/10 |
| Output Quality | 9/10 | 6/10 |
| Pricing | ||
| Free plan | No | No |
| Cheapest paid plan | Contact for pricing | $25/user/mo Microsoft 365 Copilot Business |
| Estimated cost for 10 users | Contact for pricing | $252/mo Microsoft 365 Copilot Business |
| Features | ||
| Image Generation | Not listed | |
| AI Agents | ||
| Chatbots | Not listed | |
| Voice and Audio | Not listed | |
| Workflow Automation | Not listed | |
| Knowledge Base Search | ||
| Data Analysis | ||
| API Access | Not listed | |
| Text Generation | ||
| Enterprise Controls | ||
| Code Generation | Not listed | |
| Transcription | Not listed | |
Which One Should You Choose?
Why choose ChatGPT Enterprise
- Higher Output Quality score (9/10 vs 6/10)
- Higher Analytics score (7/10 vs 6/10)
Why choose Microsoft 365 Copilot
- Higher Integration score (9/10 vs 8/10)
- Higher Cost score (4/10 vs 3/10)
- Better fit for small business (7/10 vs 2/10)
Pros & Cons
ChatGPT Enterprise
Pros
- The enterprise governance set goes well beyond the Business plan, including SCIM, custom RBAC, customer-managed encryption keys on AWS, GCP, or Azure, and a compliance logs API.
- Data residency across multiple regions and HIPAA BAA eligibility make the plan usable in regulated industries.
- One seat bundles chat, deep research, image generation, voice, the ChatGPT Work agent, and Codex, so teams don't need separate AI tools for each task.
- Admins can set monthly per-user credit limits, overage caps, and alerts to govern agent and Codex spending.
- Connectors for Microsoft 365, Google Drive, Slack, and GitHub let company knowledge search answer questions from internal data.
Cons
- There is no public pricing. Per-seat figures come only from third-party estimates, and contracts are negotiated case by case.
- Usage-based charges for Work and Codex, with multipliers for long context, fast mode, and regional processing, make total cost hard to predict.
- The reported 150-seat minimum and annual commitment exclude smaller teams.
- Compliance logs for Work keep prompts for only 30 days and are not a full audit trail of tool calls, so a separate SIEM export is needed for longer retention.
- PeerSpot reviewers report context limits on very long documents and want finer per-team control over tone and response constraints.
Microsoft 365 Copilot
Pros
- Works directly inside Word, Excel, PowerPoint, Outlook and Teams, so users don't need to switch to a separate tool.
- Grounds answers in the organization's own email, SharePoint and OneDrive data, and respects the tenant's existing security and compliance settings.
- Teams meeting summaries with action items save time for meeting-heavy teams.
- Copilot Business brought the price for organizations with up to 300 users down to $21 from $30 while keeping the same functionality.
Cons
- It is an add-on, so the per-user cost comes on top of the base Microsoft 365 license.
- Reviewers report inconsistent output quality across the Office apps.
- Some users report daily usage or message limits.
- Overlapping product names (Copilot, Copilot Pro, Copilot Business) have led buyers to purchase the wrong tier.
