# Patronus AI vs Weights & Biases: who uses which

On usedby, 7 companies use Patronus AI and 55 use Weights & Biases. 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 2026-10-06: 62 of 62 public lines checked.

## Side by side

|  | [Patronus AI](https://www.usedby.ai/tools/patronus-ai.md) | [Weights & Biases](https://www.usedby.ai/tools/weights-and-biases.md) |
|---|---|---|
| Public customers | 7 | 55 |
| Confirmed | 7 | 43 |
| Observed | 0 | 12 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Marketplace (1) | Artificial Intelligence (8), Automotive Manufacturing (2), Biotech & Pharma (2) |
| Category | ML Ops & Training | ML Ops & Training |
| Your data | Not used to train models by default. ([patronus.ai](https://www.patronus.ai/privacy-policy), checked 2026-10-08) | — |
| Vendor status | — | Renamed CoreWeave Forge; its website now redirects to coreweave.com. ([id.coreweave.com](https://id.coreweave.com/login?next=%2Fwandb), checked 2026-10-04) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- 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)
- Weights & Biases: [Woven by Toyota](https://www.usedby.ai/case-studies/woven-by-toyota-weights-and-biases.md): **10x**: “Experiment tracking has given us 10x velocity” (published 2024-02-20)
- Weights & Biases: [ReelData](https://www.usedby.ai/case-studies/reeldata-weights-and-biases.md): story without a checked figure. (published 2026-01-21)

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