# Who uses Patronus AI?

7 companies use Patronus AI on usedby: 7 confirmed, 0 observed and 0 signals. 14% of them are in Marketplace. Confirmed or observed customers include Etsy, Algomo and Emergence AI. Latest check 2026-10-06: 7 of 7 companies checked, from 5 public sources.

> Simulation environments, digital world models and evaluation tools to train and test AI agents.

- Category: [ML Ops & Training](https://www.usedby.ai/tools/category/ml-ops-training.md)
- Website: [patronus.ai](https://www.patronus.ai/)

## Customers

Every line is a customer, at one of three proof levels: confirmed (a case study, a named quote or a press release), observed (the vendor shows the company on its own pages) or signal (a job post shows the company's employees use the tool, the weakest proof). The first public proof is the first public page we found, not an adoption date.

| Company | Industry | Proof | First public proof | Source |
|---|---|---|---|---|
| [Etsy](https://www.usedby.ai/companies/etsy.md) | Marketplace | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies/etsy-leveraging-patronus-ais-multimodal-llm-as-a-judge-to-optimize-image-captionin), captured 2026-10-06 |
| [Algomo](https://www.usedby.ai/companies/algomo.md) | — | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies), captured 2026-10-06 |
| [Emergence AI](https://www.usedby.ai/companies/emergence-ai.md) | — | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies/emergence-ai-partnering-with-patronus-ai-on-ai-agent-fleet-optimization), captured 2026-10-06 |
| [Exa](https://www.usedby.ai/companies/exa.md) | — | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies), captured 2026-10-06 |
| [Gamma](https://www.usedby.ai/companies/gamma.md) | — | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies/gamma-scaling-ai-performance-with-automated-evals-and-rigorous-experimentation), captured 2026-10-06 |
| [Hospitable](https://www.usedby.ai/companies/hospitable.md) | — | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies), captured 2026-10-06 |
| [Weaviate](https://www.usedby.ai/companies/weaviate.md) | — | Confirmed | — | [patronus.ai](https://www.patronus.ai/case-studies/weaviate-leverages-patronus-percival-to-accelerate-complex-ai-agent-development), captured 2026-10-06 |

## Published results

Reviewed stories only. A figure is the vendor’s or the customer’s claim, quoted with its label; usedby did not measure it.

- [Gamma](https://www.usedby.ai/case-studies/gamma-patronus-ai.md): **1K+ hours** saved on manual evaluation per month through (Vendor case study, captured by usedby 2026-10-06)
- [Etsy](https://www.usedby.ai/case-studies/etsy-patronus-ai.md): story without a checked figure. (Vendor case study, captured by usedby 2026-10-06)
- [Weaviate](https://www.usedby.ai/case-studies/weaviate-patronus-ai.md): story without a checked figure. (Vendor case study, captured by usedby 2026-10-06)
- [Emergence AI](https://www.usedby.ai/case-studies/emergence-ai-patronus-ai.md): story without a checked figure. (Vendor case study, captured by usedby 2026-10-06)

## Before you buy

Read on Patronus AI’s own pages; the quote was found on the cited page.

| Fact | Value | Source | Checked |
|---|---|---|---|
| Your data | Not used to train models by default. | [patronus.ai](https://www.patronus.ai/privacy-policy) | 2026-10-08 |

## Alternatives

- [Weights & Biases](https://www.usedby.ai/tools/weights-and-biases.md): 55 public customers. Compare: https://www.usedby.ai/compare/patronus-ai-vs-weights-and-biases.md
- [H2O.ai](https://www.usedby.ai/tools/h2o-ai.md): 42 public customers. Compare: https://www.usedby.ai/compare/h2o-ai-vs-patronus-ai.md

More: https://www.usedby.ai/alternatives/patronus-ai.md

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Source: https://www.usedby.ai/tools/patronus-ai · How we check: https://www.usedby.ai/methodology