Weights & Biases logo — The AI developer platform.

Weights & Biases

The AI developer platform.

Founded 2017 United States San Francisco, United States 293 employees Acquired Total: $1.95B AI, Data Analytics +2

General Information

Company Name Weights & Biases
Founded Year 2017
Location United States San Francisco, United States +1
Employees 293
Industries AI, Data Analytics, Developer Tools +1
Funding Stage Acquired
Social

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Recorded by Bounce Watch from public sources. Every entry below carries the date we observed it, and when we have not looked recently the page says so rather than leaving silence to imply nothing happened.

Event Participation Sep 10, 2026

Lorenzo Porras from Weights & Biases participated in the company's #MasterClassExecutive cohort last week, sharing insights on the dynamic nature of AI models.

New Partnership Sep 02, 2026

Weights & Biases announced an event collaboration with the Aston Martin F1 Team for hands-on labs and a garage presence at #FullyConnected26.

About Weights & Biases

Weights & Biases, founded in 2017, is a leader in the rapidly evolving AI and Data Analytics sectors. Positioned as "The AI developer platform," the company offers a comprehensive suite of tools designed to expedite AI model development, including fine-tuning LLMs and building GenAI applications with robust MLOps solutions.

The platform's components, such as W&B Models and W&B Weave, cater to both foundation model builders and software developers, making it an essential tool for enterprises aiming to transition models into production efficiently. With major players like OpenAI, Meta, and NVIDIA among its clientele, Weights & Biases boasts a significant market trust and adoption, underpinning its prowess in AI and Machine Learning innovation.

Headquartered in the United States, the company made headlines with a $1.70B acquisition investment from CoreWeave in March 2025. Such substantial backing signals confidence in their market trajectory and potential scalability.

Taxonomy: MLOps, LLMOps, GenAI Applications, Model Performance Visualization, Experiment Tracking, AI Governance, Model Monitoring, Inference, Model Comparison, Data Quality, AI Observability, Prompt Engineering, Hyperparameter Tuning, Reproducibility, Dataset Versioning

Funding Rounds & Investors (7)

View All
Funding Stage Amount Investors Lead Investors Date
Acquisition •••••• 1 •••• •••• 01 Mar 2025
Late Vc •••••• 8
Investor Investor Investor Investor Investor
•••• ••••
01 Aug 2023
Late Vc •••••• 1
Investor
01 May 2022
Series C •••••• 4
Investor Investor
•••• ••••
01 Oct 2021
Series B •••••• 4
Investor Investor Investor Investor
01 Feb 2021

View All 7 Funding Rounds

Weights & Biases Alternatives & Competitors

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FAQ About Weights & Biases

The AI developer platform.
Weights & Biases was founded in 2017.
Weights & Biases is headquartered in San Francisco, United States.
Weights & Biases operates in the following industries: AI, Data Analytics, Developer Tools, Machine Learning.
Weights & Biases has approximately 293 employees.
Weights & Biases has completed 7 funding rounds, raising a total of $1.95B. The latest funding stage is Acquired.
Top alternatives and competitors to Weights & Biases include EXPAI, Activeloop, CareSquare, Sketchfab, TurboSquid by Shutterstock. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Weights & Biases and EXPAI are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

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