Microsoft Copilot vs Writer: who uses which
Customers, public proof and the companies that use both.
On usedby, 3 companies use Microsoft Copilot and 67 use Writer. 1 company uses both, including 6sense. Writer leads among the HealthTech & Digital Health companies on usedby that use either tool.Latest check Oct 13, 2026: 67 of 70 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses Microsoft Copilot, Writer, or both
Every company with a public proof for at least one of the two tools.
2
use only Microsoft Copilot
1
company uses both
1 of them is listed through a job post on one side, the weakest proof.
66
use only Writer
2 companies use only Microsoft Copilot, 66 use only Writer and 1 uses both, 1 of them through a job post on one side, out of the 69 companies on usedby that use at least one of them.
Where it lands
Recently publicly listed customers
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, Microsoft Copilot | First public proof, Writer |
|---|---|---|
 6sensejob post for Microsoft Copilot | Job post, Jun 2026 | On or before May 2023 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Microsoft Copilot, Writer or both: a share of the companies on usedby, not of the market.
Microsoft Copilot onlyBothWriter only
More common with Writer
- HealthTech & Digital Health7 of the 7 HealthTech & Digital Health companies on usedby that use either tool use Writer.
- Marketing Tech6 of the 6 Marketing Tech companies on usedby that use either tool use Writer, 1 of them alongside Microsoft Copilot.
- Fintech & Payments5 of the 5 Fintech & Payments companies on usedby that use either tool use Writer.
Source: every usedby line, from confirmed proofs to job-post signals (the weakest proof level).
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Microsoft CopilotWriterWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Questions about Microsoft Copilot and Writer
Which is used more, Microsoft Copilot or Writer?
Writer has more customers on usedby: 67 against 3 for Microsoft Copilot.
Do companies use both Microsoft Copilot and Writer?
Yes. 1 company uses both on usedby, including 6sense.
Who uses Microsoft Copilot?
3 companies on usedby, each with the public page that shows it. See who uses Microsoft Copilot.
Who uses Writer?
67 companies on usedby, each with the public page that shows it. See who uses Writer.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.