Claude vs Microsoft Copilot: who uses which
Customers, public proof and the companies that use both.
On usedby, 90 companies use Claude and 4 use Microsoft Copilot. 1 company uses both, including 6sense. Claude leads among the DevTools & Infrastructure companies on usedby that use either tool.Latest check Oct 17, 2026: 66 of 94 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 Claude, Microsoft Copilot, or both
Every company with a public proof for at least one of the two tools.
89
use only Claude
1
company uses both
1 of them is listed through a job post on one side, the weakest proof.
3
use only Microsoft Copilot
89 companies use only Claude, 3 use only Microsoft Copilot and 1 uses both, 1 of them through a job post on one side, out of the 93 companies on usedby that use at least one of them.
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, Claude | First public proof, Microsoft Copilot |
|---|---|---|
 6sensejob posts for both | Job post, Oct 2026 | Job post, Jun 2026 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Claude, Microsoft Copilot or both: a share of the companies on usedby, not of the market.
Claude onlyBothMicrosoft Copilot only
More common with Claude
- DevTools & Infrastructure11 of the 11 DevTools & Infrastructure companies on usedby that use either tool use Claude.
- Fintech & Payments10 of the 10 Fintech & Payments companies on usedby that use either tool use Claude.
- Data & Analytics7 of the 8 Data & Analytics companies on usedby that use either tool use Claude.
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.
Claude
Microsoft CopilotWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Claude
Claude Tag reduced the time required to reach an answer by 65%
Carvana
Vendor case study, claude.com, captured Oct 12, 2026
I prototyped a new product flow with Figma Make in five minutes.
Figma
Vendor case study, claude.com, captured Oct 12, 2026
Microsoft Copilot
No reviewed story for Microsoft Copilot yet.
Questions about Claude and Microsoft Copilot
Which is used more, Claude or Microsoft Copilot?
Claude has more customers on usedby: 90 against 4 for Microsoft Copilot.
Do companies use both Claude and Microsoft Copilot?
Yes. 1 company uses both on usedby, including 6sense.
Who uses Claude?
90 companies on usedby, each with the public page that shows it. See who uses Claude.
Who uses Microsoft Copilot?
4 companies on usedby, each with the public page that shows it. See who uses Microsoft Copilot.
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 four proof levels: confirmed, declared by the company itself, 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.