Kustomer vs Zendesk AI: who uses which
Customers, public proof and the companies that use both.
On usedby, 32 companies use Kustomer and 27 use Zendesk AI. No company is listed with both yet. Kustomer leads among the E-commerce & D2C companies on usedby that use either tool, Zendesk AI among the Travel & Hospitality companies.Latest check Oct 5, 2026: 55 of 59 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 Kustomer, Zendesk AI, or both
Every company with a public proof for at least one of the two tools.
32
use only Kustomer
0
companies use both
27
use only Zendesk AI
32 companies use only Kustomer, 27 use only Zendesk AI and 0 use both, out of the 59 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for Kustomer yet.
Where it lands
Newest customers
No new customer since tracking started on October 3, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Kustomer, Zendesk AI or both: a share of the companies on usedby, not of the market.
Kustomer onlyBothZendesk AI only
More common with Kustomer
- E-commerce & D2C9 of the 11 E-commerce & D2C companies on usedby that use either tool use Kustomer.
- Fashion & Apparel6 of the 7 Fashion & Apparel companies on usedby that use either tool use Kustomer.
More common with Zendesk AI
- Travel & Hospitality3 of the 5 Travel & Hospitality companies on usedby that use either tool use Zendesk AI.
Source: confirmed and observed usedby lines. Job-post signals, the weakest proof level, are left out of these shares.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
KustomerZendesk AIWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Kustomer
chat grew from 36% to 66% of all inbound volume in under 9 months
MeUndies
Vendor case study, kustomer.com, captured Oct 3, 2026
How Coterie Baby uses Kustomer
Coterie Baby
Vendor case study, kustomer.com, captured Oct 3, 2026
Zendesk AI
a reduction by more than 56 percent
IRC-CEO
Vendor case study, zendesk.com, published Mar 9, 2026
more than 50 percent of Babbel’s tickets are automated through AI agents
Babbel
Vendor case study, zendesk.com, published Feb 11, 2026
Questions about Kustomer and Zendesk AI
Which is used more, Kustomer or Zendesk AI?
Kustomer has more customers on usedby: 32 against 27 for Zendesk AI. Kustomer leads among the E-commerce & D2C companies on usedby that use either tool, Zendesk AI among the Travel & Hospitality companies.
Do companies use both Kustomer and Zendesk AI?
usedby has not found a company with a confirmed or observed line on both Kustomer and Zendesk AI yet.
Who uses Kustomer?
32 companies on usedby, each with the public page that shows it. See who uses Kustomer.
Who uses Zendesk AI?
27 companies on usedby, each with the public page that shows it. See who uses Zendesk AI.
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.