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Experiment tracking, model registry, and evals for ML teams. Used by OpenAI, Nvidia, Lyft, and Toyota. Acquired by CoreWeave in 2025.
- Founded
- 2017
- Category
- AI
- Funding
- VC-backed
Every fact above is shown only where it could be checked against a source: funding against a primary source, backers against the investor’s own directory, and a location only where the company names that city on its own site. A row that is absent is one we could not source, not a zero. The summary is a written description of the company. Category is our own classification. Spotted something wrong? Tell us.
Frequently asked questions
What does Weights & Biases do?
Experiment tracking, model registry, and evals for ML teams. Used by OpenAI, Nvidia, Lyft, and Toyota. Acquired by CoreWeave in 2025.
Where is Weights & Biases based?
Location for Weights & Biases has not been disclosed publicly.
When was Weights & Biases founded?
Weights & Biases was founded in 2017.
How much has Weights & Biases raised?
Weights & Biases is vc-backed. Funding details have not been disclosed.