Platforms for model training and lifecycle management
237 companies on usedby use at least one of the 11 tools in this category with a public customer. Weights & Biases leads with 55 companies. Then come H2O.ai (42) and Labelbox (29). 17 companies run two of these tools or more. The most common pair is Weights & Biases with Hugging Face (2 companies).Latest check Oct 7, 2026: 249 of 259 public lines checked. Counts are of companies on usedby, not of the whole market: we list a company when a public page shows its AI tools.
237
companies on usedby use a tool of this category
Companies with a public line for each tool. Job-post signals count and are drawn apart in the proof bar.
| # | Tool | Customers | Proof |
|---|---|---|---|
| 1 |  Weights & Biases | 55 | |
| 2 |  H2O.ai | 42 | |
| 3 |  Labelbox | 29 | |
| 4 |  Encord | 25 | |
| 5 |  DataRobot | 24 | |
| 6 |  Anyscale | 23 | |
| 7 |  Domino Data Lab | 17 | |
| 8 |  Scale AI | 16 | |
| 9 |  Snorkel AI | 12 | |
| 10 |  Hugging Face | 9 | |
| 11 |  Patronus AI | 7 |
17 companies run two of these tools or more. The most common pair is Weights & Biases with Hugging Face, at 2 companies.
Weights & Biases55 customersWeights & Biases is used by 55 companies on usedby, 43 confirmed by a case study, a named quote or a press release. Named customers include Microsoft, OpenAI, and Toyota. Who uses Weights & Biases, H2O.ai vs Weights & Biases
Customer page: wandb.ai. Latest check of 55 of 55 lines: Oct 3, 2026.
H2O.ai42 customersH2O.ai is used by 42 companies on usedby, 35 confirmed by a case study, a named quote or a press release. Named customers include AT&T, Booking.com, and Intel. Who uses H2O.ai, H2O.ai vs Weights & Biases
Customer page: h2o.ai. Latest check of 42 of 42 lines: Oct 7, 2026.
Labelbox29 customersLabelbox is used by 29 companies on usedby, 20 confirmed by a case study, a named quote or a press release. Named customers include Meta, NASA, and Procter & Gamble. Who uses Labelbox, Labelbox vs Weights & Biases
Customer page: labelbox.com. Latest check of 29 of 29 lines: Oct 7, 2026.
Encord25 customersEncord is used by 25 companies on usedby, 11 confirmed by a case study, a named quote or a press release. Named customers include Hitachi, Axa, and Mayo Clinic. Who uses Encord, Encord vs Weights & Biases
Customer page: encord.com. Latest check of 25 of 25 lines: Oct 7, 2026.
Companies first listed by a tool of this category in the last 90 days.
Side-by-side pages with the companies behind each tool.
Answers drawn from usedby data.
Weights & Biases, used by 55 of the 237 companies on usedby in this category. Then come H2O.ai (42) and Labelbox (29). Who uses Weights & Biases.
Weights & Biases: 55 companies on usedby, against 42 for H2O.ai.
Yes: 17 of the 237 companies on usedby in this category run two or more. The most common pair is Weights & Biases with Hugging Face (2 companies).
By the number of companies with a public line for each tool, read from dated captures of vendor customer pages, case studies, press releases and job posts. Job-post signals count in the totals and are shown apart. usedby lists a company when a public page shows it, so these counts describe the companies on usedby, not the whole market.