Weights & Biases (W&B)
Agent37Agent Readiness: 37/100. Below median. Measured by StartupHub.ai. Median 41.Trust91Data Trust: 91/100. Top 25%. Measured by StartupHub.ai. Median 61.MLOps platform for tracking, visualizing, and collaborating on machine learning experiments.
About
Weights & Biases (W&B) provides an MLOps platform that helps machine learning teams track experiments, visualize results, and collaborate effectively. It offers tools for experiment tracking, model versioning, dataset versioning, and hyperparameter sweeps, enabling faster iteration and better model development.
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Key facts
- Website
- wandb.ai
- Headquarters
- San Francisco, United States
- Founded
- 2017
- Total funding
- $521M (Series C)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 19 Apr 2023 | Series C | $20M | |
| 21 Apr 2021 | Series C | $200M | Tiger Global |
| 12 Aug 2020 | Series B | $30M | Coatue |
| 17 Sept 2019 | Series A | $19M | Innovation Endeavors |
| 17 Jul 2018 | Seed | $5M | Founders Fund |
Tech stack
Detected on wandb.ai, last scanned 4 Sept 2026. Run your own scan
- Auth
- Auth0
- Support
- Discourse
- CMS / Builders
- Mintlify
- Hosting
- Google Cloud
- Email provider
- Google Workspace
- Email marketing
- Adobe Marketo
- Booking / scheduling
- Bizzabo
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Frequently asked
Is Weights & Biases (W&B) trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Weights & Biases (W&B) is 91 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has Weights & Biases (W&B) raised?
Weights & Biases (W&B) has raised a total of $521M in funding. The most recent round on record is Series C.
SEC filings, insider activity, nonprofit links and pay benchmarks for Weights & Biases (W&B):
Company details: from public sources. Funding: no announced round on file. Ownership: not yet claimed by the company. Scores: measured by named tools; each links to its method. Our rules
