Anthropic rents CoreWeave capacity

Anthropic has signed a multi-year deal to rent computing capacity from CoreWeave to run and expand its Claude artificial intelligence models. (bloomberg.com) CoreWeave said April 10 that it will support both the development and deployment of Claude, with the new capacity coming online later in 2026 across United States data centers using a mix of Nvidia chips. Anthropic and CoreWeave did not disclose the contract’s value. (coreweave.com) The agreement comes one week after Anthropic said it had expanded its Google and Broadcom arrangement for “multiple gigawatts” of next-generation Tensor Processing Unit capacity starting in 2027. Anthropic said Amazon Web Services remains its primary cloud and training partner. (anthropic.com 1) (anthropic.com 2) Cloud capacity is the rented computing power used to train and run large language models, which are software systems that predict the next token in a sequence and require thousands of specialized chips working in parallel. CoreWeave sells that capacity as an artificial intelligence-focused cloud, built around Nvidia graphics processing units in its own data centers. (coreweave.com) (anthropic.com) Anthropic has been building a multi-cloud setup rather than relying on one provider. The company said in November 2024 that Amazon had invested an additional $4 billion, bringing Amazon’s total investment to $8 billion, and making Amazon Web Services Anthropic’s primary cloud and training partner. (anthropic.com) (aboutamazon.com) Anthropic also widened distribution for Claude in November 2025 by making Claude models available in Microsoft Foundry and Microsoft 365 Copilot. Anthropic said that gave Azure customers public-preview access to Claude Sonnet 4.5, Haiku 4.5, and Opus 4.1. (anthropic.com) (azure.microsoft.com) For CoreWeave, the Anthropic contract adds another marquee customer two days after the company announced an expanded Meta agreement worth about $21 billion through December 2032. CoreWeave said that Meta deal includes deployments across multiple sites and some initial use of Nvidia’s Vera Rubin platform. (coreweave.com) Investors treated the Anthropic announcement as a sign that CoreWeave is broadening beyond its earlier dependence on Microsoft. Reuters reported that CoreWeave shares rose more than 13% on April 10 after the Anthropic deal was announced. (reuters.com) The immediate next step is physical, not abstract: more racks of Nvidia chips have to come online later this year before Anthropic can use this capacity at scale. The deal shows Claude’s growth is now tied to how quickly specialized cloud companies can turn power, buildings, and chips into working artificial intelligence infrastructure. (coreweave.com) (bloomberg.com)