On usedby, 50 companies use Sierra and 22 use Yuma. No company is listed with both yet. Sierra leads among the Fintech & Payments companies on usedby that use either tool.Latest check Oct 7, 2026: 69 of 72 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 Sierra, Yuma, or both
Every company with a public proof for at least one of the two tools.
50
use only Sierra
0
companies use both
22
use only Yuma
50 companies use only Sierra, 22 use only Yuma and 0 use both, out of the 72 companies on usedby that use at least one of them.
Where it lands
Newest customers
Where it lands
Newest customers
We have not started tracking changes for Yuma yet.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Sierra
YumaWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Sierra
Nearly 1,000 hours per month returned to exception handling and high-value work
RunBuggy
Vendor case study, sierra.ai, published Feb 3, 2026
Yuma
cut average resolution times by 90%
Finn
Vendor case study, yuma.ai, published Jul 29, 2025
Today, first response time holds steady at around 12 minutes.
Javvy Coffee
Vendor case study, yuma.ai, published Feb 6, 2026
Questions about Sierra and Yuma
Which is used more, Sierra or Yuma?
Sierra has more customers on usedby: 50 against 22 for Yuma.
Do companies use both Sierra and Yuma?
usedby has not found a company with a confirmed or observed line on both Sierra and Yuma yet.
Who uses Sierra?
50 companies on usedby, each with the public page that shows it. See who uses Sierra.
Who uses Yuma?
22 companies on usedby, each with the public page that shows it. See who uses Yuma.
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.