Microsoft Copilot
Microsoft · General AI · Productivity
Microsoft's assistant across Windows, Bing and Microsoft 365. Consumer Copilot supports conversation and file help; Microsoft 365 Copilot works inside Office documents and mail.
Best for: Microsoft 365 work. Word, Excel, Outlook, Teams.
| Models | OpenAI models + Microsoft models |
|---|---|
| Free plan | Yes |
| Paid plans | Microsoft 365 Personal/Family/Premium tiers; Microsoft 365 Copilot for business (Copilot Pro was retired in 2026) |
| API | Via Azure OpenAI (developer path) |
| Custom instructions | Limited, persistent custom-instruction support varies; paste per session or use Copilot agents where available |
| Memory | Personalization features vary by account type |
| File upload | Yes |
| Web search | Yes (Bing) |
| Context window | Model-dependent |
| Apps | Windows · Web · iOS · Android · Microsoft 365 apps |
Facts last reviewed 2026-08-10, capabilities and plans change frequently; verify on the official site before relying on a detail.
Models, limits and pricing
| Current models | OpenAI GPT-5.6 family (Sol / Terra / Luna), preferred model since 2026-07-09 Microsoft in-house MAI models, used for some Word and Excel features Exposed in the UI as 'Quick Response' and 'Think Deeper', not by model name |
|---|---|
| Context window | Not published |
| Parameters | Not disclosed most closed frontier models do not publish parameter counts; we do not repeat rumored figures. |
| Modalities | Text, image and voice in; text and image out; Office document grounding |
| Consumer pricing |
|
| API pricing | No consumer per-token API, see vendor pricing page |
Pricing and model line-ups verified 2026-08-11 from source 1 ↗ · source 2 ↗ · source 3 ↗. These change often. The vendor page is authoritative.
Notable
- Deep Office integration
- Enterprise governance via Microsoft 365