Weights & Biases announced a $45 million Series B round led by Insight Partners, with participation from Coatue, Trinity Ventures, and Bloomberg Beta. The company said the funding would help expand beyond experiment tracking into broader MLOps capabilities.
Weights and Biases Raises $45M Series B to Expand Beyond Experiment Tracking for Machine Learning Practitioners Everywhere VerifiedWeights & Biases announced it had closed a Series C round of more than $100 million at a $1 billion valuation. New investors included Felicis Ventures and BOND, alongside existing backers Insight Partners and Coatue.
Weights & Biases Raises Its Series C at a Billion Dollar Valuation VerifiedWeights & Biases announced a $50 million strategic investment led by Nat Friedman and Daniel Gross at a $1.25 billion valuation. The company also said it was launching W&B Prompts as part of the announcement.
Weights & Biases Raises $50 Million Round Led by Daniel Gross and Nat Friedman Announces W&B Prompts VerifiedWeights & Biases announced it received Google Cloud's 2023 Technology Partner of the Year Award for Artificial Intelligence and Machine Learning. The company said the recognition reflected its work helping joint customers accelerate machine learning and AI development on Google Cloud.
Weights & Biases Wins Google Cloud Technology Partner of the Year Award for AI and Machine Learning VerifiedAcquired by CoreWeave for $1.7B (March 2025). Pre-acquisition: $250M raised (Coatue, GV, Insight Partners, NVIDIA).
VerifiedCoreWeave announced it had reached an agreement to acquire Weights & Biases. CoreWeave said the deal would combine its infrastructure with W&B's AI developer platform and was expected to close in the first half of 2025.
Acquiring AI Developer Platform Weights & Biases | CoreWeave VerifiedCoreWeave announced that it had completed its acquisition of Weights & Biases. The company said the transaction united CoreWeave's AI cloud platform with W&B's developer tooling.
CoreWeave Completes Acquisition of Weights & Biases VerifiedCoreWeave and Weights & Biases announced three new product capabilities: Mission Control Integration, W&B Inference, and W&B Weave Online Evaluations. The release said this was the first software integration after CoreWeave's acquisition of W&B.
CoreWeave and Weights & Biases Announce New Products and Capabilities, Helping AI Developers Iterate Faster on Models and Agents Verified