CoreWeave in talks to buy AI startup Weights & Biases for around $1.7 billion ahead of IPO

CoreWeave, a cloud computing provider specializing in AI infrastructure, is in talks to acquire Weights & Biases, an AI startup that helps developers build machine learning applications. The deal is expected to be valued at around $1.7 billion, according to The Information, citing two sources who spoke with executives at Weights & Biases.

The report surfaced on the same day CoreWeave filed for its IPO, marking the first major tech offering of 2025. The company also disclosed that more than half of its $1.9 billion revenue comes from a single customer.

“CoreWeave, which provides cloud servers to large companies developing artificial intelligence, is in talks to acquire Weights & Biases, a startup that helps developers build AI applications, for around $1.7 billion,” The Information reported.

Backed by Nvidia, CoreWeave was valued at $23 billion following a $650 million secondary share sale in November 2024. The potential acquisition could be a strategic move to reduce its dependence on Microsoft, which accounted for 62% of its revenue last year, and expand its footprint in software services.

Weights & Biases has built a reputation for its tools that help AI developers track and manage machine learning experiments. These offerings could complement CoreWeave’s cloud services, which are heavily geared toward GPU processing.

The startup’s paid plans start at $50 per month for professionals, attracting data scientists from industries such as pharmaceuticals and medical imaging. With more than 900,000 users, its client list includes OpenAI, Siemens, and Salesforce, according to its website.

We reported on CoreWeave yesterday after its founders, Mike Intrator, Brian Venturo, and Brannin McBee—ex-commodities traders turned tech entrepreneurs—each offloaded at least $150 million in stock before CoreWeave’s upcoming IPO. This kind of early payout isn’t typical ahead of an IPO—and it could raise eyebrows.

Weights & Biases Team