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Weights & Biases

ML experiment tracking and model management platform.

AI InfrastructureFounded January 2018#5 of 54 in AI Infrastructure

wandb.aiGitHubPyPI
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Company research

Current company data

No company research card is published for Weights & Biases yet. The current company data below lists package, repository, and discussion metrics AI-Buzz can inspect today; AI-Buzz publishes a card when recent public metrics show a measured change with dated evidence and cited sources.

Package downloads (30d)

21.5M/30d

Dependent projects

2.2K

dependents · latest

GitHub stars

11.2K

Hacker News

5/30d

Note: Public metrics are incomplete, and current data alone does not prove a trend; they do not show private usage, paid use, customer count, or product quality.

See latest dataHow we measure itAll research →

Company profile

What is Weights & Biases?

Weights & Biases is the standard tool for ML experiment tracking. Used by OpenAI, Anthropic, and thousands of ML teams. 25B valuation.

Latest company data

Metric dates vary by source

Metric dates
PyPI downloads
PyPI dependents
GitHub stars
Hacker News mentions

Key metric

Package downloads (30d)

21.5M/30d

Tracked package: PyPI wandb

▼ -25%

Additional metrics

3 metrics

Metric

Dependent projects

2.2K

Projects depending on tracked package: PyPI wandb

Metric

GitHub stars

11.2K

Main repository stars

Metric

Hacker News

5/30d

Position #31 in category discussion

Repository health

Maintenance data from the main open-source repository.

Key-person risk
3
External contributors
38
% of recent contributors outside the core team
Releases (30d)
0

Repository usage

Public repositories and source files importing packages tied to Weights & Biases.

Repos importing
9.3K0%

About Weights & Biases

Weights & Biases is the standard tool for ML experiment tracking. Used by OpenAI, Anthropic, and thousands of ML teams. 25B valuation.

FoundersLukas Biewald, Chris Van Pelt, Shawn Lewis
wandb.aigithub.com/wandb/wandbPyPI: wandb

Disclosed funding

Disclosed $250M · 5 rounds

Disclosed funding records total $250M. Category position #5 of 54 in AI Infrastructure.

Strategic Investment2023

Daniel Gross, Nat Friedman

$50M
Series C2021

Felicis, Bond

$135M
Series B2021

Insight Partners

$45M
Series A2019

Trinity Ventures, Coatue

$15M
Seed2018

Trinity Ventures

$5M

Investors

BondCoatueDaniel GrossFelicisInsight PartnersNat FriedmanTrinity Ventures

Tracked packages (1)

1 PyPI

wandb

PyPIMain PyPI package

wandb

Track and version datasets, models, and other files used in ML workflows for reproducibility.