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H2O.ai vs Patronus AI: who uses which

Customers, public proof and the companies that use both.

On usedby, 42 companies use H2O.ai and 7 use Patronus AI. No company is listed with both yet.Latest check Oct 7, 2026: 49 of 49 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 H2O.ai, Patronus AI, or both

Every company with a public proof for at least one of the two tools.

42

use only H2O.ai

0

companies use both

7

use only Patronus AI

42 companies use only H2O.ai, 7 use only Patronus AI and 0 use both, out of the 49 companies on usedby that use at least one of them.

42customers
35 confirmed 7 observed

Where it lands

Banking & Mortgages4
HR & Recruiting2
Insurance & InsurTech2

Newest customers

No new customer since tracking started on October 7, 2026.

Patronus AI

Open Patronus AI
7customers
7 confirmed 0 observed

Where it lands

Marketplace1

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.

No company uses both yetusedby has not found a company with a confirmed or observed line on both H2O.ai and Patronus AI.

Side by side

Facts from our data and from each vendor's public pages. Each line says where it comes from.

H2O.aiPatronus AI
Customersusedby, latest check Oct 7, 2026H2O.ai: 42 (35 confirmed, 7 observed)Patronus AI: 7 (7 confirmed, 0 observed)
Top industryusedby, latest check Oct 7, 2026H2O.ai: Banking & Mortgages (4)Patronus AI: No clear lead
CategoryusedbyH2O.ai: ML Ops & TrainingPatronus AI: ML Ops & Training
WebsiteH2O.ai: h2o.aiPatronus AI: patronus.ai

Pricing, security and data residency are not checked yet. usedby adds them from each vendor's public pages, with the date of the check.

What customers report

Results as the vendor or the customer published them, with the source and the date.

H2O.ai

saves more than $10M per year

AT&T

Vendor case study, h2o.ai, captured Oct 7, 2026

Read the story

Decreased time to prototype new models from weeks to 2 days

Commonwealth Bank

Vendor case study, h2o.ai, captured Oct 7, 2026

Read the story

Patronus AI

1K+ hours saved on manual evaluation per month through Patronus Judges

Gamma

Vendor case study, patronus.ai, captured Oct 6, 2026

Read the story

How Etsy uses Patronus AI

Etsy

Vendor case study, patronus.ai, captured Oct 6, 2026

Read the story

Questions about H2O.ai and Patronus AI

Which is used more, H2O.ai or Patronus AI?

H2O.ai has more customers on usedby: 42 against 7 for Patronus AI.

Do companies use both H2O.ai and Patronus AI?

usedby has not found a company with a confirmed or observed line on both H2O.ai and Patronus AI yet.

Who uses H2O.ai?

42 companies on usedby, each with the public page that shows it. See who uses H2O.ai.

Who uses Patronus AI?

7 companies on usedby, each with the public page that shows it. See who uses Patronus 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.