Michael Intrator, co-founder and CEO of CoreWeave participates in an interview at the New York Stock Exchange in New York, September 22, 2025.
Michael Nagle | Bloomberg | Getty Images
CoreWeave shares rose as much as 8% on Wednesday as the artificial intelligence cloud provider announced new tools to help programmers develop AI agents.
With the new serverless reinforcement learning service, you don’t have 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 than running Nvidia H100 graphics processing units locally, “with no impact on model quality,” according to a release.
Reinforcement learning is a decades-old approach that 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 targeting developers with AI model training and evaluation software. The deal is an effort to complement CoreWeave’s existing rental business Nvidia graphics processing units to companies that need infrastructure to run their models.
Companies have been rushing to secure GPUs to implement AI projects. In the cloud, CoreWeave competes with leading providers such as Amazon Web services, although some companies want to keep GPUs in their own data centers.
Demand has increased.
Two weeks ago, CoreWeave said OpenAI had agreed to extend a multi-year deal up to $6.5 billion, and last week the cloud company said Meta committed to spending $14.2 billion.
In July, it announced plans to buy a data center infrastructure provider Basic scientistlong-time partner, for 9 billion dollars. Some Core Scientific shareholders are seeking a more favorable deal and are recommending that it be rejected in its current state. A revision of the acquisition offer does not seem likely.
“Realistically, under no circumstances will we revisit the offer that we presented,” 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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