Weights and Biases
Weights and Biases's full profile: funding, valuation, competitors, and the people behind the company.
Awaira Score
Out of 100
HQ
United States
Founded
2017
Raised
$250M
Stage
Acquired
Team
300
About Weights and Biases
Weights and Biases is a machine learning platform founded in 2017 that provides infrastructure for experiment tracking, model management, and collaboration in AI development. The company's core product enables data scientists and ML engineers to log, visualize, and compare machine learning experiments, addressing the reproducibility and collaboration challenges inherent in modern AI…
Key Facts
- Weights and Biases is valued at $1.25B as of March 2026.
- Weights and Biases has raised a total of $250M in disclosed funding across 5 funding rounds.
- Weights and Biases was founded in 2017 by Lukas Biewald and is headquartered in United States.
- Weights and Biases employs approximately 300 people.
- Weights and Biases operates in the AI Data category and is currently at the Acquired stage.
- Weights and Biases has an Awaira Score of 80/100, ranking it among the highly notable AI companies on Awaira.
- Weights and Biases's most recent funding round was a Series C of $50M closed in August 2023, led by Daniel Gross.
Source: Awaira · Updated Mar 24, 2026
Valuation
$1.25B
Post-money
Total Raised
$250M
All rounds
Awaira Score
80/100
Founded
2017
300 employees
Strengths & Risks
Strengths
Unicorn status with $1.25B valuation
Elite Awaira Score of 80/100
Growing team of 300 employees
Analysis based on publicly available data. Not investment advice.
Funding Velocity
5
Total Rounds
$49M
Avg Round Size
5.7yr
Funding Span
Weights and Biases raised 5 rounds over 5.7 years, averaging $49M per round — a pace of roughly one round every 14 months.
Awaira estimate based on public data. Not financial advice.
How does Weights and Biases stack up against competitors?
Competitor Comparison
| Metric | ★Weights and Biases | Databricks | Patsnap | Pinecone |
|---|---|---|---|---|
| Awaira Score | 80/100 | 93/100 | 80/100 | 76/100 |
| Total Raised | $250M | $20.2B | $300M | $138M |
| Valuation | $1.25B | $134B | $1B | $750M |
| Stage | Acquired | Private | Series E | Series B |
| Founded | 2017 | 2013 | 2007 | 2019 |
| Employees | 300 | 6,000 | 500-1000 | 150 |
| Country | 🇺🇸 | 🇺🇸 | 🇸🇬 | 🇺🇸 |
Investors in Weights and Biases
Funding Rounds
InactiveLed by Daniel Gross
$50M
Aug 2023
Led by Sequoia Capital
$125M
Sep 2022
Led by Sequoia Capital
$50M
Mar 2021
Led by Sequoia Capital
$15M
Apr 2019
Led by Google Ventures
$5M
Jan 2018
Weights and Biases Latest News
Data Collective Leads Investment in Weights & Biases' AI Developer Platform
Weights and Biases Partners with Fortune 500 Companies for AI Data Infrastructure
Weights & Biases Raises $250 Million at $8.5 Billion Valuation
Weights and Biases Closes Funding Round as Investor Interest in AI Surges
Open Positions at Weights and Biases
View all jobs →Founded Same Year (2017)
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