# H2O.ai vs Weights & Biases: who uses which

On usedby, 42 companies use H2O.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 2026-10-07: 97 of 97 public lines checked.

## Side by side

|  | [H2O.ai](https://www.usedby.ai/tools/h2o-ai.md) | [Weights & Biases](https://www.usedby.ai/tools/weights-and-biases.md) |
|---|---|---|
| Public customers | 42 | 55 |
| Confirmed | 35 | 43 |
| Observed | 7 | 12 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | Banking & Mortgages (4), HR & Recruiting (2), Insurance & InsurTech (2) | Artificial Intelligence (8), Automotive Manufacturing (2), Biotech & Pharma (2) |
| 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) | — |
| 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.

- 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)
- 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/h2o-ai-vs-weights-and-biases · How we check: https://www.usedby.ai/methodology