CoreWeave

An American cloud-computing company that rents GPUsGPU, abbr.: A computer chip first designed to draw video-game graphics that turned out to be ideal for AI, because it can do thousands of simple calculations at the same time. for AI training and inferenceinference, n.: Drawing a conclusion from evidence. In today's AI it most often means running an already-trained model to get an answer, as opposed to training it., the best-known of the neocloudsneocloud, n.: A newer kind of cloud company that mainly rents out powerful AI chips, rather than the full range of computing services that giants like Amazon or Microsoft sell. — GPU-focused providers competing with general-purpose clouds such as Amazon Web Services and Microsoft Azure. It builds and leases AI data centersAI data center, n.: A building or campus packed with AI chips, power equipment and cooling, built to train and run AI models. The biggest use as much electricity as a city. filled mainly with Nvidia systems, often among the first to deploy each new generation, and its largest customers have included Microsoft, OpenAI and Meta. Nvidia is both its main supplier and an investor. Its rapid expansion has been financed largely with debt secured on GPUs and customer contracts, which critics cite as evidence of financial fragility and circular dealing in the AI build-out. In 2025 it acquired Weights & Biases, maker of tools for tracking machine learning experiments.