Side by side
DeepSeek vs Microsoft Copilot
A fact-based comparison built only from each tool's verified directory profile — pricing summaries, plan availability, platforms, and stated strengths and limitations. No rankings, no sponsored placement.
| Criterion | DeepSeek | Microsoft Copilot |
|---|---|---|
| Category | AI Chatbots & Assistants | AI Chatbots & Assistants |
| In one sentence | DeepSeek's chat app and low-cost API, running its V4.1 Flash model. | Microsoft's AI assistant, free on its own and built into Word, Excel, PowerPoint and Outlook through Microsoft 365 plans. |
| Problem it solves | Gives people and developers access to a capable model at low per-token cost. | Brings AI help into the Office apps people already use for documents, spreadsheets, slides and email. |
| Free plan | Yes | Yes |
| Developer API | Yes — docs | No |
| Open source | No | No |
| Platforms | Web, iOS, Android, DeepSeek Harness Desktop | Web, Windows, iOS, Android, Microsoft 365 apps |
| Pricing (summary) | DeepSeek's site lists no paid consumer subscription for the chat app. The API is pay-as-you-go per 1M tokens, with off-peak rates at half the peak rates. Checked 2026-10-19 | The Copilot app is free with limited usage. Microsoft 365 Personal ($9.99/month), Family ($12.99/month) and Premium ($19.99/month) add Copilot in Office apps. Businesses can buy bundles with Copilot or a Copilot Business add-on per user. Checked 2026-10-19 |
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How to choose
Every profile links to the vendor's official pricing — plan details change often, so verify there before buying. Pick based on the criterion rows above that matter to your workflow, not on rankings: we don't rank tools, because the right choice depends on your needs.