Scale AI vs Weights & Biases: who uses which
Customers, public proof and the companies that use both.
On usedby, 16 companies use Scale AI and 55 use Weights & Biases. 2 companies use both, including Meta and Microsoft. Weights & Biases leads among the Artificial Intelligence companies on usedby that use either tool.Latest check Oct 3, 2026: 61 of 71 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Scale AI, Weights & Biases, or both
Every company with a public proof for at least one of the two tools.
14
use only Scale AI
2
companies use both
53
use only Weights & Biases
14 companies use only Scale AI, 53 use only Weights & Biases and 2 use both, out of the 69 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 3, 2026.
Where it lands
Newest customers
We have not started tracking changes for Weights & Biases yet.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company | First public proof, Weights & Biases |
|---|---|
 Meta | On or before Sep 2025 |
 Microsoft | On or before Oct 2023 |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Scale AI
Weights & BiasesWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Scale AI
No reviewed story for Scale AI yet.
Weights & Biases
Experiment tracking has given us 10x velocity
Woven by Toyota
Vendor case study, wandb.ai, published Feb 20, 2024
How ReelData uses Weights & Biases
ReelData
Vendor case study, wandb.ai, published Jan 21, 2026
Questions about Scale AI and Weights & Biases
Which is used more, Scale AI or Weights & Biases?
Weights & Biases has more customers on usedby: 55 against 16 for Scale AI.
Do companies use both Scale AI and Weights & Biases?
Yes. 2 companies use both on usedby, including Meta and Microsoft.
Who uses Scale AI?
16 companies on usedby, each with the public page that shows it. See who uses Scale AI.
Who uses Weights & Biases?
55 companies on usedby, each with the public page that shows it. See who uses Weights & Biases.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.