# Weights and Biases

Weights & Biases focuses on providing developer tools for machine learning.

Weights & Biases focuses on providing developer tools for machine learning.

Canonical: https://uniquebase.ai/companies/weights-biases
Stable identifier: UB-C1906
Snapshot captured: 2026-10-15T14:23:27.067Z
English updated: 2026-10-15T19:38:33.557Z

## Funding

Listed 2 records.
Latest: $200M (Series D), 2025-10-13.

- 2025-10-13 · $200M · Series D · Felicis, Insight Partners · https://salestools.io/en/report?search=ML%20Ops
  > On 2025-10-13, according to SalesTools, Weights & Biases completed a USD 200 million Series D financing at a USD 1 billion valuation (translated source brief)
- 2025-03-05 · Undisclosed · Acquired · CoreWeave

## Valuation

Listed 2 records.
Latest: $1B (Series D), 2025-10-13.

- 2025-10-13 · $1B · Series D · Felicis, Insight Partners · https://salestools.io/en/report?search=ML%20Ops
  > On 2025-10-13, according to SalesTools, Weights & Biases completed a USD 200 million Series D financing at a USD 1 billion valuation (translated source brief)
- 2025-03-05 · amount unavailable · Acquired · CoreWeave

## Revenue

No revenue records are listed yet.


## Team

- [Lukas Biewald](/people/lukas-biewald)

## Products

- [Prompts](/products/prompts)
- [Weights & Biases](/products/weights-biases)

## Investors

- [CoreWeave](/institutions/coreweave)
- [Felicis](/institutions/felicis)
- [Insight Partners](/institutions/insight-partners)

## Sources

- No source links are available for this profile.