CoreWeave has signed an expanded agreement with OpenAI, securing a contract valued at up to $6.5bn to provide infrastructure for the training of the ChatGPT maker’s next-generation AI models.

This new deal brings the total value of CoreWeave’s contracts with OpenAI to nearly $22.4bn. It follows previous agreements announced in March 2025 for up to $11.9bn and in May for up to $4bn.

CoreWeave co-founder, chairman and CEO Michael Intrator said: “We are proud to expand our relationship with OpenAI, a company consistently at the forefront of advancing artificial intelligence.

“This milestone affirms the trust that world-leading innovators have in CoreWeave’s ability to power the most demanding inference and training workloads at an unmatched pace.”

Earlier in September 2025, the company outlined a commitment of $1.5bn to support AI projects in the UK.

The company also recently launched CoreWeave Ventures, aimed at supporting early-stage companies and founders working on technologies related to the AI ecosystem.

Recent acquisitions by CoreWeave, including OpenPipe and Weights & Biases, are part of its strategy to expand capabilities across different layers of the AI technology stack.

CoreWeave infrastructure and industrial compute vice president Peter Hoeschele said: “CoreWeave has become an important partner in OpenAI’s broader infrastructure platform.

“By delivering compute at unmatched speed and scale, they’re helping us advance the frontier of intelligence and ensure AI’s benefits reach everyone.”

Recently, the company signed a $6.3bn agreement with AI chipmaker Nvidia. This includes an initial order and guarantees Nvidia will purchase any unsold cloud computing capacity from CoreWeave.

The deal with Nvidia was formalised through a new order form under the existing master services agreement (MSA) established in April 2023.