Michael Intrator, co-founder and CEO of CoreWeave participates in an interview at the New York Stock Exchange in New York on September 22, 2025.
Michael Nagle | Bloomberg | fake images
Core tissue Shares rose as much as 8% on Wednesday as the cloud AI provider announced new tools to help programmers develop AI agents.
With the new serverless reinforcement learning service, there is no need to worry about adding or removing computing power, because it happens automatically.
Testing indicated that when developers use CoreWeave’s new service, they can train models faster with 40% lower costs compared to running Nvidia H100 graphics processing units locally, “with no impact on model quality,” according to a statement.
Reinforcement learning is an approach that has been around for decades and involves evolving systems through trial and error to improve results over time.
The launch comes five months after CoreWeave paid $1 billion to acquire Weights and Biases, a startup aimed at developers with software to train and test AI models. The deal is an effort to complement CoreWeave’s existing rental business. NVIDIA graphic processing units to companies that need infrastructure to operate models.
Companies have rushed to get GPUs to implement AI projects. In the cloud, CoreWeave competes with leading providers such as Amazon Web services, although some companies will want to keep the GPUs in their own data centers.
Demand has been increasing.
Two weeks ago, CoreWeave said OpenAI agreed to extend a multi-year deal by up to $6.5 billion, and last week, the cloud company said Goal committed to spending $14.2 billion.
In July, it announced plans to buy a data center infrastructure provider. Scientific corea long-time partner, for $9 billion. Some Core Scientific shareholders are seeking a more favorable deal and recommend it be rejected as it stands. A review of the takeover offer does not seem likely.
“Really, under no circumstances will we re-approach the offer we put forward,” Mike Intrator, co-founder and CEO of CoreWeave, told Bloomberg on Tuesday.
New Jersey-based CoreWeave went public on Nasdaq in March.
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