On usedby, 22 companies use Vic.ai and 28 use Zest. No company is listed with both yet. Zest leads among the Banking & Mortgages companies on usedby that use either tool.Latest check Oct 8, 2026: 40 of 50 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 Vic.ai, Zest, or both
Every company with a public proof for at least one of the two tools.
22
use only Vic.ai
0
companies use both
28
use only Zest
22 companies use only Vic.ai, 28 use only Zest and 0 use both, out of the 50 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 8, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 2, 2026.
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.
Vic.ai
ZestWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Vic.ai
We’ve seen an 84% decrease in processing time per invoice.
Countsy
Vendor case study, vic.ai, published Jan 17, 2025
Real estate giant HSB cuts invoice time by 83%
HSB
Vendor case study, vic.ai, published Dec 17, 2021
Zest
No reviewed story for Zest yet.
Questions about Vic.ai and Zest
Which is used more, Vic.ai or Zest?
Zest has more customers on usedby: 28 against 22 for Vic.ai.
Do companies use both Vic.ai and Zest?
usedby has not found a company with a confirmed or observed line on both Vic.ai and Zest yet.
Who uses Vic.ai?
22 companies on usedby, each with the public page that shows it. See who uses Vic.ai.
Who uses Zest?
28 companies on usedby, each with the public page that shows it. See who uses Zest.
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.