# H2O.ai vs Patronus AI: who uses which

On usedby, 42 companies use H2O.ai and 7 use Patronus AI. No company is listed with both yet. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-07: 49 of 49 public lines checked.

## Side by side

|  | [H2O.ai](https://www.usedby.ai/tools/h2o-ai.md) | [Patronus AI](https://www.usedby.ai/tools/patronus-ai.md) |
|---|---|---|
| Public customers | 42 | 7 |
| Confirmed | 35 | 7 |
| Observed | 7 | 0 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Banking & Mortgages (4), HR & Recruiting (2), Insurance & InsurTech (2) | Marketplace (1) |
| Category | ML Ops & Training | ML Ops & Training |
| Data processing terms | A data processing agreement is available. ([h2o.ai](https://h2o.ai/legal/dpa/), checked 2026-10-07) | — |
| Your data | — | Not used to train models by default. ([patronus.ai](https://www.patronus.ai/privacy-policy), checked 2026-10-08) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- H2O.ai: [AT&T](https://www.usedby.ai/case-studies/at-t-h2o-ai.md): **$10M**: “saves more than $10M per year” (captured by usedby 2026-10-07)
- H2O.ai: [Commonwealth Bank](https://www.usedby.ai/case-studies/commonwealth-bank-of-australia-h2o-ai.md): **2 days**: “Decreased time to prototype new models from weeks to 2 days” (captured by usedby 2026-10-07)
- Patronus AI: [Gamma](https://www.usedby.ai/case-studies/gamma-patronus-ai.md): **1K+ hours**: “1K+ hours saved on manual evaluation per month through Patronus Judges” (captured by usedby 2026-10-06)
- Patronus AI: [Etsy](https://www.usedby.ai/case-studies/etsy-patronus-ai.md): story without a checked figure. (captured by usedby 2026-10-06)

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Source: https://www.usedby.ai/compare/h2o-ai-vs-patronus-ai · How we check: https://www.usedby.ai/methodology