Microsoft Copilot (previously Bing Chat) is Microsoft’s AI assistant, powered by OpenAI’s GPT-4o and deeply integrated into the Microsoft 365 ecosystem. Available at copilot.microsoft.com, it’s also embedded in Windows 11, Microsoft Edge, Teams, Word, Excel, PowerPoint, and Outlook.
| Surface | What It Does |
|---|
| copilot.microsoft.com | Web chat with search grounding, image generation |
| Windows 11 | System-level AI assistant (sidebar or taskbar) |
| Microsoft Edge | Browser sidebar, page summarization, compose mode |
| Microsoft 365 | Copilot in Word, Excel, PowerPoint, Outlook, Teams |
| GitHub Copilot | Coding assistant (separate product — see GitHub Copilot) |
| Azure AI Studio | Developer access to Copilot models |
The Microsoft 365 Copilot license enables Copilot inside Office apps:
| App | What Copilot Does |
|---|
| Word | Draft documents, summarize, rewrite |
| Excel | Generate formulas, analyze data, create charts with natural language |
| PowerPoint | Create presentations from prompts, reformat slides |
| Outlook | Summarize long email threads, draft replies |
| Teams | Transcribe and summarize meetings, action items |
| OneNote | Organize notes, summarize pages |
| Feature | Description |
|---|
| Web grounding | All Copilot responses cite live Bing search results |
| Image generation | Create images with DALL-E 3 (via Designer) |
| Notebook | Long-context workspace for large documents |
| Plugins | Connect to Kayak, OpenTable, Instacart, and more |
| Voice | Speak naturally to Copilot |
| Image understanding | Upload images and ask questions |
| Plan | Price | Features |
|---|
| Free | $0 | GPT-4o, Bing grounding, basic image gen |
| Copilot Pro | $20/user/month | Priority access, Copilot in M365 apps, image gen |
| M365 Copilot | $30/user/month | Full Office 365 integration, Teams meeting summaries |
| Enterprise | Custom | Security, compliance, data isolation |
| Feature | Microsoft Copilot | ChatGPT | Claude |
|---|
| Always web-connected | Yes (Bing) | Optional | Optional |
| Office 365 integration | Native | No | No |
| Windows integration | Yes | No | No |
| Image generation | Yes (DALL-E/Designer) | Yes (DALL-E) | No |
| Enterprise compliance | Strong (M365 data boundary) | Enterprise plan | Enterprise plan |
| Underlying model | GPT-4o (OpenAI) | GPT-4o (OpenAI) | Claude (Anthropic) |