Weights & Biases, a leading developer-first MLOps platform, has closed its Series C funding round of more than $100 million at a one billion dollar valuation, from new investors Felicis Ventures and BOND as well as existing investors Insight Partners and Coatue.

Founded by repeat entrepreneurs Lukas Biewald, Shawn Lewis, and Chris Van Pelt, W&B began as an experiment tracking solution and quickly expanded to other areas of the machine learning pipeline, including dataset versioning, model evaluation, data visualization, collaborative model training, reproducibility and pipeline management.