Weights & Biases
Owned by CoreWeave since May 2025 as its developer tools business.
What it is
A developer platform for tracking, evaluating and managing machine-learning and AI-agent development. CoreWeave bought it to sell an end-to-end stack for building AI applications, running on its own cloud.
Why it matters to the stock. It widens CoreWeave beyond raw compute into software that AI teams use every day, which can raise the value of each customer relationship.
News
CoreWeave launches Forge, combining Weights & Biases, OpenPipe and marimo
CoreWeave launched Forge, a development platform that merges Weights & Biases Models, OpenPipe post-training and the open-source marimo notebook project.
Product
CoreWeave launches ARIA research agent in public preview inside Weights & Biases
CoreWeave put its AI Research and Iteration Agent (ARIA) into public preview inside Weights & Biases.
Product