Weights & Biases

Weights & Biases operates as an artificial intelligence (AI) developer platform that provides tools for machine learning and artificial intelligence. The company offers products for building, fine-tuning, and deploying machine learning models, as well as tools for software developers to track and evaluate large language model applications. It serves the AI and machine learning sectors within the technology industry. It was founded in 2017 and is based in San Francisco, California. In March 2025, Weights & Biases was acquired by CoreWeave at a valuation of $1.7B.