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Side-by-side comparison · AI Assistants & LLMs

Claude vs Microsoft Copilot vs DeepSeek

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

Claude

4.6

From $20/mo

Microsoft Copilot

3.6

From $9.99/mo

DeepSeek

3.8

From Pay per use

Comparing 3 tools, the maximum.

At a glance

Claude

4.6
Best overallEasiest to use

Pick it if: Anyone who writes, researches or makes decisions for a living, plus anyone curious about Claude Code.

Microsoft Copilot

3.6

Pick it if: Businesses and people who spend their day in Word, Excel, Outlook and Teams.

DeepSeek

3.8
Best value

Pick it if: Anyone who wants a strong reasoning assistant for free, and developers watching their API costs.

Claude scores highest overall, but DeepSeek gives you more for your money. Which one is right comes down to what you value most.

Overview

AttributeClaudeMicrosoft CopilotDeepSeek
In one lineAnthropic's chat assistant, at its best on careful writing and long documents.Microsoft's assistant, free on Windows and built into Word, Excel and Outlook.A free Chinese assistant that's strong at maths, logic and code.
Pricing modelFreemiumFreemiumFree
Starting price$20/mo$9.99/moPay per use
Free plan Yes Yes Yes
Works with Claude Code Yes No No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeClaudeMicrosoft CopilotDeepSeek
Overall rating4.6Winner3.63.8
Ease of useHow quickly someone non-technical gets value from it.
4.5
3.5
3.5
FeaturesHow much it can do, and how well the pieces fit together.
4.5
4.0
3.0
Output qualityHow good the results are before you fix them.
5.0
3.5
4.0
Value for moneyWhat you get for the price, including the free plan.
4.5
3.5
5.0
Speed & reliabilityHow fast it is and how often it falls over.
4.5
3.5
3.5

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeClaudeMicrosoft CopilotDeepSeek
Access & platform
Free plan Yes Yes Yes
Mobile app Yes Yes Yes
Desktop app Yes Yes No
Browser extension Yes Yes No
API access Yes Yes Yes
Teams & business
Team workspace Yes Yes No
Enterprise plan or SSO Yes Yes No
Connects to other apps Yes Yes No
Open source or self-hosted No No Yes
AI abilities
Works with your files Yes Yes Yes
Understands images Yes Yes Yes
Makes images No Yes No
Makes video No No No
Writes code Yes Yes Yes
Runs agents or automations Yes Yes No
Learns your brand or style Yes No No
Works in many languages Yes Yes Yes
Capabilities score14/ 1714/ 178/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeClaudeMicrosoft CopilotDeepSeek
Plans

Free

Free

Trying it out and light daily use.

Free

Free

Trying Copilot chat on Windows or your phone.

Chat appOur pick

Free

Anyone who wants a capable reasoning assistant at no cost.

ProOur pick

$20/mo, or $17/mo billed yearly

Anyone who uses it most days.

Microsoft 365 Personal

$9.99/mo, or $99.99/yr

One person who wants Office plus some Copilot.

API (deepseek-flash)

Pay per use, from $0.15 per million input tokens

Developers building cheap features into their own apps.

Max

From $100/mo

Heavy users and people living in Claude Code.

Microsoft 365 PremiumOur pick

$19.99/mo, or $199.99/yr

Sole traders and households who want the full Copilot in Office.

API (deepseek-v4-pro)

Pay per use, from $0.66 per million input tokens

Developers who want the stronger model.

Team

From $20/seat/mo billed yearly

Businesses with 2 to 150 people.

Microsoft 365 Copilot (business add-on)

$30/user/mo billed yearly

Businesses already on a Microsoft 365 business plan.

Which plan to pickStart on Free to see if the writing suits you. Most people who stick with it move to Pro within a month; only go to Max if you hit the Pro limits every day or you're running Claude Code for hours at a time.If you're a sole trader or a household already paying for Microsoft 365, Premium is the easy upgrade. For a business, the $30 add-on only makes sense for the people who live in Excel, Outlook and Teams meetings; give everyone else the free Copilot Chat and a Claude or ChatGPT seat.The app is free, so the only decision is whether the privacy trade-off is acceptable for what you're asking. If you need the model inside your own software, have a developer use the API or run the open model through a provider that keeps your data in Australia.

Key features

AttributeClaudeMicrosoft CopilotDeepSeek
Standout features
  • Projects
  • Artifacts
  • Long documents
  • Web search and connectors
  • Claude Code
  • Memory
  • Copilot in Word and Outlook
  • Copilot in Excel
  • Copilot in PowerPoint
  • Researcher and Analyst agents
  • Work-grounded chat
  • Free Copilot chat
  • Step-by-step reasoning
  • Free app
  • Open models
  • Cheap API
  • Code help

Pros and cons

AttributeClaudeMicrosoft CopilotDeepSeek
Pros
  • Writing sounds like a person and needs the least editing of any assistant
  • Handles long documents and messy briefs without losing track
  • Projects and memory mean you stop repeating the same context
  • Artifacts turn answers into real documents, slides and small apps
  • One subscription covers Claude Code as well
  • Works inside the Office apps most workplaces already pay for
  • Business add-on answers from your own emails, files and meetings
  • Keeps your existing security, permissions and compliance
  • Premium bundles Office, storage and Copilot for one price
  • Excel and Outlook help saves real time for non-technical staff
  • Free app with no paid tier, and strong at reasoning and code
  • API costs a fraction of the big US labs
  • Models are open, so you can run them where your data rules allow
  • Shows its reasoning so mistakes are easier to catch
Cons
  • Free and Pro usage limits can bite on a busy day
  • No video generation, and image generation is basic next to ChatGPT
  • Fewer third-party connectors and plugins than ChatGPT
  • Answer and writing quality trails ChatGPT, Claude and Gemini
  • Business add-on is $30 per user on top of your licence, the priciest option here
  • Results in Excel and PowerPoint still need a lot of fixing
  • Which Copilot you have depends on your licence, which is confusing
  • No reason to pick it if you don't use Microsoft 365
  • Data goes to China and it's banned on Australian government devices
  • No image or video generation and almost no integrations
  • Service slows or drops out when demand spikes
  • Avoids or slants topics sensitive to the Chinese government
  • Writing quality is behind Claude and ChatGPT

Who each one is for

AttributeClaudeMicrosoft CopilotDeepSeek
Best for
  • Long-form writing and editing
  • Reading and summarising long documents
  • Thinking through a plan or decision
  • Pairing with Claude Code
  • Summarising long Outlook threads
  • First drafts in Word
  • Explaining and tidying spreadsheets
  • Quick PowerPoint decks
  • Maths, logic and step-by-step problems
  • Coding help
  • A capable free assistant
  • Cheap API access for your own apps
You'll find it used by
  • Writers and marketers
  • Founders
  • Consultants
  • Developers
  • Office workers
  • Finance teams
  • Small business owners
  • Corporate teams
  • Developers
  • Students
  • Analysts
  • Budget-conscious founders

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability. The "Visit" buttons may use affiliate links, which never affect a score.

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