GitHub copilot vs Replit: who uses which
Customers, public proof and the companies that use both.
On usedby, 40 companies use GitHub copilot and 31 use Replit. 1 company uses both, including Duolingo.Latest check Oct 7, 2026: 60 of 71 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses GitHub copilot, Replit, or both
Every company with a public proof for at least one of the two tools.
37
use only GitHub copilot
1
company uses both
28
use only Replit
37 companies use only GitHub copilot, 28 use only Replit and 1 uses both, out of the 68 companies on usedby that use at least one of them.
2 more companies are listed for both, with a job post on one side: not counted as using both.
Where it lands
Newest customers
We have not started tracking changes for GitHub copilot yet.
Where it lands
Newest customers
No new customer since tracking started on October 7, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 Duolingo |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
GitHub copilot
ReplitWhat customers report
Results as the vendor or the customer published them, with the source and the date.
GitHub copilot
That peer-led rollout helped ASOS reach over 90% Copilot adoption across the engineering team within months.
ASOS
Vendor case study, github.com, published Jul 30, 2026
Cathay rolled out GitHub Copilot to more than 1,000 developers in just one week
Cathay
Vendor case study, github.com, published Oct 27, 2025
Replit
Eliminating the speaker review agency saved SaaStr $200,000+ annually
SaaStr
Vendor case study, replit.com, published Feb 1, 2025
Questions about GitHub copilot and Replit
Which is used more, GitHub copilot or Replit?
GitHub copilot has more customers on usedby: 40 against 31 for Replit.
Do companies use both GitHub copilot and Replit?
Yes. 1 company uses both on usedby, including Duolingo.
Who uses GitHub copilot?
40 companies on usedby, each with the public page that shows it. See who uses GitHub copilot.
Who uses Replit?
31 companies on usedby, each with the public page that shows it. See who uses Replit.
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 is named as using both tools when its lines on both are confirmed or observed.