# DeepSeek vs Microsoft Copilot

> DeepSeek: Free AI chat app and low-cost API running DeepSeek's open-weights V4 models
> Microsoft Copilot: Microsoft's AI assistant for chat, writing and research across web, apps and Microsoft 365

- DeepSeek profile: https://finderatlas.com/tools/deepseek
- Microsoft Copilot profile: https://finderatlas.com/tools/microsoft-copilot
- Comparison page: https://finderatlas.com/compare/deepseek-vs-microsoft-copilot
- Last reviewed: October 2026

## Verdict

DeepSeek and Microsoft Copilot are both AI Assistants tools. DeepSeek scores higher in FinderAtlas's editorial review (8.8 vs 8.4 out of 10), led by reasoning & logic. Both have a free plan or trial. Only DeepSeek offers an API.

### Choose DeepSeek if

- You want a tool built for Low-cost API integration.
- Web chat and mobile apps are free.
- API output costs from $0.60 per 1M tokens (Flash, off-peak), well below most frontier providers.

### Choose Microsoft Copilot if

- You want a tool built for drafting and summarizing inside Word.
- Free tier with chat, image creation and voice on web, desktop and mobile.
- Built into Word, Excel, PowerPoint, Outlook and Teams for Microsoft 365 subscribers.

## Pricing

| | DeepSeek | Microsoft Copilot |
| --- | --- | --- |
| Pricing model | Freemium | Freemium |
| Free plan or trial | Yes | Yes |
| Starting price | $0 | $0 |

## Features

| Feature | DeepSeek | Microsoft Copilot |
| --- | --- | --- |
| V4 model family | Yes | Not listed |
| Thinking mode | Yes | Not listed |
| Open weights | Yes | Not listed |
| OpenAI and Anthropic compatible API | Yes | Not listed |
| Tool calls and JSON output | Yes | Not listed |
| Search and Fetch APIs | Yes | Not listed |
| Agent tool integrations | Yes | Not listed |
| DeepSeek Harness | Yes | Not listed |
| Vision on Flash | Yes | Not listed |
| Chat | Not listed | Yes |
| Image creation | Not listed | Yes |
| Voice | Not listed | Yes |
| Microsoft 365 integration | Not listed | Yes |
| Cowork | Not listed | Yes |
| Researcher | Not listed | Yes |
| Code | Not listed | Yes |
| Notebook and Guided Learning | Not listed | Yes |
| Work IQ | Not listed | Yes |
| Auto model picker | Not listed | Yes |

## Platforms

| Platform | DeepSeek | Microsoft Copilot |
| --- | --- | --- |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | No |
| Browser Extension | No | No |

## DeepSeek strengths

- Web chat and mobile apps are free
- API output costs from $0.60 per 1M tokens (Flash, off-peak), well below most frontier providers
- Open weights for V4 and earlier models on Hugging Face
- 1M-token context and 384K max output on both API models
- API works with both OpenAI and Anthropic SDKs and several coding agents

## DeepSeek limitations

- Peak-hour API rates are double the off-peak rates on weekday mornings UTC
- deepseek-v4-pro does not support vision input
- No image generation
- Data is processed by a company based in China, which some organizations cannot accept

## Microsoft Copilot strengths

- Free tier with chat, image creation and voice on web, desktop and mobile
- Built into Word, Excel, PowerPoint, Outlook and Teams for Microsoft 365 subscribers
- Copilot Chat is included with eligible business Microsoft 365 plans at no extra cost
- Enterprise Data Protection and admin controls in business plans
- Apps for Windows, macOS, iOS and Android

## Microsoft Copilot limitations

- Consumer premium features require a Microsoft 365 subscription; the standalone Copilot Pro plan is no longer sold
- Copilot Business is an add-on at $21 to $25.20 per user per month on top of a Microsoft 365 plan
- Usage limits apply to free and lower tiers, and Microsoft does not publish exact numbers on the pricing page
- Family plan AI features are for the subscription owner only

## FAQ

**Is DeepSeek better than Microsoft Copilot?**

It depends on your workflow. DeepSeek is built for Low-cost API integration. Microsoft Copilot is built for drafting and summarizing inside Word.

**What are the key feature differences between DeepSeek and Microsoft Copilot?**

DeepSeek: Free AI chat app and low-cost API running DeepSeek's open-weights V4 models. Microsoft Copilot: Microsoft's AI assistant for chat, writing and research across web, apps and Microsoft 365.

**Does DeepSeek or Microsoft Copilot have a free plan?**

Yes, both do. DeepSeek is freemium and Microsoft Copilot is freemium, and each has a free plan or trial.

**Which is cheaper, DeepSeek or Microsoft Copilot?**

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.