Arize AI vs Fiddler AI: who uses which
Customers, public proof and the companies that use both.
On usedby, 35 companies use Arize AI and 10 use Fiddler AI. No company is listed with both yet.Latest check Oct 6, 2026: 40 of 45 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 Arize AI, Fiddler AI, or both
Every company with a public proof for at least one of the two tools.
35
use only Arize AI
0
companies use both
10
use only Fiddler AI
35 companies use only Arize AI, 10 use only Fiddler AI and 0 use both, out of the 45 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 5, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 6, 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.
Arize AI
Fiddler AIWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Arize AI
The approach enabled 15+ production use cases in the first six months
Handshake
Vendor case study, arize.com, captured Oct 5, 2026
How Booking.com uses Arize AI
Booking.com
Vendor case study, arize.com, captured Oct 5, 2026
Fiddler AI
No reviewed story for Fiddler AI yet.
Questions about Arize AI and Fiddler AI
Which is used more, Arize AI or Fiddler AI?
Arize AI has more customers on usedby: 35 against 10 for Fiddler AI.
Do companies use both Arize AI and Fiddler AI?
usedby has not found a company with a confirmed or observed line on both Arize AI and Fiddler AI yet.
Who uses Arize AI?
35 companies on usedby, each with the public page that shows it. See who uses Arize AI.
Who uses Fiddler AI?
10 companies on usedby, each with the public page that shows it. See who uses Fiddler 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.