Claude Cowork VS Microsoft 365 Copilot_
As of 4 November 2026, Microsoft 365 Copilot is named by 456 companies and Claude Cowork by 373; Claude Cowork skews to companies under 200 people (41% vs 19%), Microsoft 365 Copilot to companies over 1,000 (55% vs 31%).
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: Claude Cowork's script and mail records show on hundreds of thousands of small sites, Microsoft 365 Copilot rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- Claude Cowork: 2–200 employees
- 41%
- Microsoft 365 Copilot: 2–200 employees
- 19%
- Claude Cowork: 1,000+ employees
- 31%
- Microsoft 365 Copilot: 1,000+ employees
- 55%
- Postings per company, 90 days
- 2.1 · 2.9
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | Claude Cowork | share | Microsoft 365 Copilot | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 13 | 3% | 8 | 2% | even |
| 2-10 employees | 31 | 8% | 14 | 3% | Claude Cowork |
| 11-50 employees | 42 | 11% | 28 | 6% | Claude Cowork |
| 51-200 employees | 81 | 22% | 44 | 10% | Claude Cowork |
| 201-500 employees | 57 | 15% | 55 | 12% | Claude Cowork |
| 501-1000 employees | 33 | 9% | 57 | 13% | Microsoft 365 Copilot |
| 1001-5000 employees | 64 | 17% | 109 | 24% | Microsoft 365 Copilot |
| 5001-10000 employees | 19 | 5% | 49 | 11% | Microsoft 365 Copilot |
| 10,001+ employees | 33 | 9% | 92 | 20% | Microsoft 365 Copilot |
| Segment | Claude Cowork | share | Microsoft 365 Copilot | share | Leans |
|---|---|---|---|---|---|
| Technology & software | 155 | 42% | 88 | 19% | Claude Cowork |
| Business & finance services | 102 | 27% | 147 | 32% | Microsoft 365 Copilot |
| Manufacturing & industry | 25 | 7% | 93 | 20% | Microsoft 365 Copilot |
| Media & content | 16 | 4% | 12 | 3% | even |
| Public, community & associations | 14 | 4% | 15 | 3% | even |
| Consumer services & leisure | 13 | 3% | 21 | 5% | even |
| Property & construction | 13 | 3% | 12 | 3% | even |
| Utilities & infrastructure | 11 | 3% | 17 | 4% | even |
| Commerce & trade | 10 | 3% | 21 | 5% | even |
| Hospitality & travel | 5 | 1% | 8 | 2% | even |
| Health care | 4 | 1% | – | – | outside top 12 |
| Transport, logistics & rental | 3 | 1% | 6 | 1% | even |
| Automotive | – | – | 9 | 2% | outside top 12 |
| Segment | Claude Cowork | share | Microsoft 365 Copilot | share | Leans |
|---|---|---|---|---|---|
| United States | 255 | 68% | 253 | 55% | Claude Cowork |
| Germany | 24 | 6% | 39 | 9% | Microsoft 365 Copilot |
| United Kingdom | 18 | 5% | 30 | 7% | even |
| Canada | 11 | 3% | 23 | 5% | Microsoft 365 Copilot |
| France | 11 | 3% | 16 | 4% | even |
| Australia | 5 | 1% | 10 | 2% | even |
| Brazil | 4 | 1% | – | – | outside top 12 |
| Spain | 4 | 1% | 4 | 1% | even |
| Japan | 4 | 1% | – | – | outside top 12 |
| Austria | 3 | 1% | 4 | 1% | even |
| Denmark | 3 | 1% | 10 | 2% | even |
| Netherlands | 2 | 1% | 8 | 2% | even |
| Poland | – | – | 6 | 1% | outside top 12 |
| Switzerland | – | – | 4 | 1% | outside top 12 |
| Segment | Claude Cowork | share | Microsoft 365 Copilot | share | Leans |
|---|---|---|---|---|---|
| Data & AI | 173 | 18% | 241 | 17% | even |
| Product, program & project management | 84 | 9% | 94 | 7% | Claude Cowork |
| IT operations & business systems | 79 | 8% | 362 | 25% | Microsoft 365 Copilot |
| Sales | 69 | 7% | 81 | 6% | even |
| Finance & accounting | 68 | 7% | 35 | 2% | Claude Cowork |
| Software engineering | 68 | 7% | 98 | 7% | even |
| Marketing & communications | 63 | 7% | 17 | 1% | Claude Cowork |
| General management & consulting | 36 | 4% | 35 | 2% | even |
| Customer service & success | 29 | 3% | 11 | 1% | Claude Cowork |
| Business development & strategy | 25 | 3% | 13 | 1% | even |
| Human resources | 24 | 3% | 6 | 0% | Claude Cowork |
| Engineering (non-software) | 11 | 1% | 21 | 1% | even |
| Administration & office | 10 | 1% | 14 | 1% | even |
| Education & training | 8 | 1% | 5 | 0% | even |
| Design & UX | 7 | 1% | 4 | 0% | even |
| Legal, compliance & risk | 7 | 1% | 5 | 0% | even |
| research and science | 7 | 1% | – | – | outside top 12 |
| construction and civil | 4 | 0% | 3 | 0% | even |
| healthcare support and caregiving | 2 | 0% | – | – | outside top 12 |
| hospitality and food service | 2 | 0% | 2 | 0% | even |
| personal care and wellness | 2 | 0% | – | – | outside top 12 |
| procurement and purchasing | 1 | 0% | 5 | 0% | even |
| real estate and property | 1 | 0% | – | – | outside top 12 |
| Unclassified | 1 | 0% | 8 | 1% | even |
| logistics warehouse and transport | – | – | 4 | 0% | outside top 12 |
| Quality, safety & environment | – | – | 4 | 0% | outside top 12 |
| arts media and entertainment | – | – | 1 | 0% | outside top 12 |
The companies behind each column
Companies using Claude Cowork →
Companies using Microsoft 365 Copilot →
ai assistants ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
Microsoft 365 Copilot is named by 456 companies in job postings and Claude Cowork by 373; 37 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/claude-cowork-vs-microsoft-365-copilot)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
Claude Cowork vs Microsoft 365 Copilot: questions
Which is more used, Claude Cowork or Microsoft 365 Copilot?
By companies naming it in their own job postings, Microsoft 365 Copilot (456) over Claude Cowork (373). By website-and-DNS footprint, Microsoft 365 Copilot (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses Claude Cowork?
41% of Claude Cowork companies have 2 to 200 employees, against 19% for Microsoft 365 Copilot. 31% of Claude Cowork companies have over 1,000 employees, against 55% for Microsoft 365 Copilot.
Do companies run both?
37 companies name both in their postings, usually Claude Cowork in marketing and Microsoft 365 Copilot in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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