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Weights & Biases logo, AI Infrastructure AI company

Weights & Biases

Data confidence: High

ML experiment tracking and model management platform.

Founded by: Lukas Biewald, Chris Van Pelt, Shawn Lewis

DMI: 17#53 of 262 (Top 21%)HN 30d: 2
10,886 · 829 forks
AI InfrastructureMethodologyVisit Website →

Weights & Biases has a Developer Momentum Index of 17, ranking #53 of 262 companies. Key metrics include 21.9M monthly package downloads, 10.9K GitHub stars, $250M in total funding.

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Developer Adoption

Developer Adoption

Package downloads and ecosystem metrics, 30-day window

PyPI Downloads (30d)
21.9M
wandb
Active Contributors (30d)
13
Unique committers, 30-day window

Active Contributors Trend

1213131314Mar 5Mar 6
90-day trend

github contributors remained stable at 13 over the last 90 days.

View data table
Dategithub contributors
Mar 5, 202613
Mar 6, 202613

PyPI Download Trend

20,699,08021,246,51421,793,94822,341,38122,888,815Mar 5Mar 6
90-day trend

PyPI Downloads grew from 21,690,548 to 21,897,347 over the last 90 days.

View data table
Datepypi downloads
Mar 5, 202621,690,548
Mar 6, 202621,897,347
Key Signals

Developer Community Metrics

Metrics computed from HN discussion, GitHub activity, and funding data.

HN Discussion Rank#38 in AI Infrastructure by HN mentions (out of 75 tracked)
GitHub VelocityCommit velocity paused (0.0x vs 4-week average)
Funding Trajectory5 rounds in 66 months, ($5M → $15M → $45M → $135M → $50M)

Category Benchmark

75 AI Infrastructure companies
21.9M downloads/mo1642% above median
0Median: 1.3M2.5M+

Funding Rounds

Strategic Investment$50M

2023 · Daniel Gross, Nat Friedman

Series C$135M

2021 · Felicis, Bond

Series B$45M

2021 · Insight Partners

Show 2 earlier rounds
Series A$15M

2019 · Trinity Ventures, Coatue

Seed$5M

2018 · Trinity Ventures

Cite This Data

According to AI-Buzz, Weights & Biases has 21,897,347 PyPI downloads in 30 days, with 13 active contributors in 30 days, ranks #38 in AI Infrastructure for HN discussion share (out of 75 tracked with 0.1% of HN discussion), with 1 commits/week (paused).

Source: https://www.ai-buzz.com/companies/weights-biases?utm_source=citation&utm_medium=referral&utm_campaign=cite_this_data

Metrics derived from public APIs (HN Algolia, GitHub, npm/PyPI). Sentiment classified by AI. See methodology for details →

About

About

Description

ML experiment tracking and model management platform.

Estimated Company Size

101 - 250 employees

Website

wandb.ai

Details

Founded

2018

Description

Weights & Biases is the standard tool for ML experiment tracking. Used by OpenAI, Anthropic, and thousands of ML teams. Raised $200M+ Series C at $1.25B valuation.

Data Confidence

Excellent
87/ 100

Reflects profile completeness, metric freshness, and signal coverage.

How we calculate this

Open Source

10.9K
Stars
829
Forks
ActivePython
Last commit: 1 day ago
View on GitHub →

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Weights & Biases DMI badge

Weekly AI Intelligence

Which AI companies are developers actually adopting? We track npm and PyPI downloads for 262+ companies. Get the biggest shifts weekly - before they show up in the news.