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Microsoft Copilot vs DeepSeek

A direct comparison using the real catalog fields currently available for both products.

Last updated

Microsoft Copilot favicon

Microsoft Copilot

Microsoft

DeepSeek favicon

DeepSeek

DeepSeek AI

Overview
Rating
4.322,000 reviews
4.48,000 reviewsTop rated
Category
AI Assistant
AI Assistant
Subcategory
General AI Assistant
Open Source AI Model
Company
Microsoft
DeepSeek AI
Status
Active
Active
Launch year
2023
2023
Tags
microsoftofficewordexceloutlookteamsenterpriseproductivity
open-sourcereasoningllmapichinese-aicost-efficient
Pricing
Starting price
$30/mo
FreeBest value
Pricing model
Freemium
Freemium
Free plan
Yes
Yes
Free trial
✕
✕
Pricing notes

Free plan at copilot.microsoft.com. Copilot Pro $30/month for individuals. Microsoft 365 Copilot for business at $30/user/month (requires Microsoft 365 subscription).

Consumer app is free. API is usage-based from ~$0.14/million input tokens (Flash) to ~$0.435/million tokens (Pro). No subscription required for API.

Capabilities
Best for
Email writingDocument draftingData analysisMeeting summariesPresentation creation
Cost-sensitive API workloadsMathematical reasoningCode generationResearchOpen source model deployment
Target audience
Microsoft 365 usersEnterprise employeesOffice workersStudentsBusiness teams
DevelopersAI researchersCost-conscious startupsML engineersOpen source community
AI type
LLM Assistant
LLM Assistant
Modalities
TextImageCode
TextCode
Technical
Model provider
OpenAI
DeepSeek
Model names
GPT-4oGPT-4
DeepSeek V3DeepSeek R1DeepSeek V4
API available
✓
✓
Open source
✕
✓
Deployment
SaaS
SaaSAPIOpen SourceSelf-hosted
Platforms
WebWindowsiOSAndroidMicrosoft 365
WebiOSAndroid
Integrations
Microsoft WordExcelOutlookTeamsPowerPointSharePointOneNoteEdge
APIOpen source self-hosting
Team collaboration
✓
✕
Trust & security
Security

Microsoft 365 Copilot maintains data within your Microsoft 365 tenant. SOC 2, ISO 27001, and GDPR compliant. Data does not leave Microsoft 365 security boundary.

Consumer app has no enterprise security features. API terms differ from Western providers. Self-hosted deployment requires own infrastructure.

Privacy notes

Copilot has access to your emails, documents, and Teams messages within your tenant. Review permission settings carefully. Enterprise version maintains data within Microsoft 365 environment.

Subject to Chinese data laws. Routing sensitive data through hosted API carries data sovereignty risk for EU and US organisations. Self-hosting open-source models eliminates this. Review carefully before enterprise use.

Verdict
Pros
  • Deep integration with Word, Excel, Outlook, and Teams with zero workflow change
  • Free plan genuinely capable for everyday AI tasks
  • Enterprise data stays within Microsoft 365 security boundary
  • Teams meeting summary and email summarisation are practical time-savers
  • API pricing 50-90% cheaper than comparable Western models
  • Open source models can be self-hosted for full data control
  • Reasoning models competitive with OpenAI o1 on complex tasks
  • Free consumer app with no subscription
Cons
  • Microsoft 365 Copilot business plan expensive at $30/user/month on top of existing licensing
  • Effectiveness depends on quality of organisation's Microsoft 365 data
  • Less capable for creative and coding tasks than specialised tools
  • Data sovereignty concerns for EU and US enterprises
  • Consumer app has fewer features than ChatGPT Plus
  • Smaller English-language community support
  • Model update cadence less predictable than commercial providers

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Microsoft Copilot best for

Email writing
Document drafting
Data analysis
Meeting summaries
Presentation creation

DeepSeek best for

Cost-sensitive API workloads
Mathematical reasoning
Code generation
Research
Open source model deployment

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