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Weights & Biases

Series C

The developer platform for AI development, model training, and LLM evaluation

MLOpsTotal Raised: $250M👥 201-500 Employees📍 San Francisco, CA

About Weights & Biases

Weights & Biases provides MLOps and LLMOps tools for experiment tracking, dataset versioning, model evaluation, and prompt engineering used by leading AI labs like OpenAI and NVIDIA.

Founders & Leadership

Lukas BiewaldCo-Founder & CEO
Chris Van PeltCo-Founder & CTO

Investors & Backers

Funding History

2 rounds
Series BLATEST ROUND
Oct 13, 2021
RAISED$135M
INVESTORS
Series C
Aug 8, 2023
RAISED$50M
INVESTORS