Anthropic has struck a major long-term agreement to secure additional computing capacity, agreeing to a 20-year, $9.1 billion compute arrangement with Riot Platforms for 191 megawatts of power at Riot’s Rockdale, Texas campus, according to reports cited by Techmeme and detailed by Bloomberg. The deal underscores how leading AI developers are locking in energy and data-center infrastructure as demand for model training and deployment continues to grow.
Riot, a company that has historically been known for Bitcoin mining, disclosed that it has secured a multi-decade arrangement to supply “191 megawatts” of computing from its Rockdale site to a “leading frontier AI” customer. Bloomberg later identified the partner as Anthropic, the company behind the Claude suite of models. The reporting frames the contract as a response to customer demand for enough compute to meet near- and long-term needs, shifting Riot further into the business of selling AI-oriented data center capacity.
Under the reported terms, the compute capacity is expected to be delivered over a staged schedule. The first 96 megawatts are targeted for December 2027, with the full 191 megawatts intended to come online by June 2028. Riot’s disclosure, as reported by The Block, indicates that the agreement is structured as a 20-year supply arrangement and is designed to scale capacity as the AI market’s requirements expand.
The economics of the deal are also being positioned as substantial. Bloomberg reported that the contract is valued at $9.1 billion over the 20-year term, reflecting a large base commitment to long-horizon compute procurement. The Block adds that the contract includes two five-year extension options that could increase the potential contract value to $16.1 billion, effectively extending Riot’s role as a compute supplier well beyond the original term.
Riot’s announcement had an immediate market impact. Reporting highlighted that Riot shares jumped about 25% after hours on the news that the arrangement was reportedly with Anthropic. The move reflects investor reaction to a large new revenue stream tied to AI compute delivery, with analysts and market watchers treating the agreement as both a validation of Riot’s strategy and a signal of sustained infrastructure demand in AI.
In addition to the long-term supply structure, the reports describe how Riot plans to finance the early stages of the project. Riot said it arranged interim financing of $573 million from Morgan Stanley to cover initial development costs while it finalized a more comprehensive investment-grade credit backstop. That step, reported by The Block, indicates the project’s scale is large enough to require substantial upfront capital before the full delivery of capacity begins.
For Anthropic, the deal’s significance is twofold: it provides additional high-power capacity and reduces uncertainty about whether compute supply will be available when demand peaks. Bloomberg’s account emphasizes that the agreement reflects Anthropic’s efforts to secure sufficient computing to meet customer needs, pointing to a broader shift across the industry where frontier model builders treat compute as a strategic resource that must be reserved well ahead of time.
While details on exact customer workloads were not provided in the snippets, the reported scale offers an indicator of potential reach. Bloomberg said the 191 megawatts are “enough to power roughly 143,000 homes at any given moment,” illustrating how the physical energy footprint of AI infrastructure is becoming a central feature of commercial deals. That framing also highlights that compute procurement is increasingly tied to energy availability and deployment timelines, not just to software development or cloud contracting.
The announcement is the latest sign that AI infrastructure is becoming a competitive procurement arena in which power capacity, facility build-out, and financing terms can matter as much as model performance. Techmeme’s summary of the broader context emphasized that new developments in AI can be a “big moment in the AI race,” and noted that policies affecting user choice—such as individuals having the right to select an AI agent on platforms like Meta—could be “net positive for AI,” including for frontier closed models by driving diffusion of AI. Although that background commentary is not directly about the Riot arrangement, it aligns with the same underlying reality: the industry is expanding capacity and access pathways at a rapid pace.
For Riot, the deal also signals an evolution from mining-driven compute utilization to AI supply. Bloomberg described Riot as having “recently began selling AI data center capacity,” and the agreement with a “leading frontier AI” company places that strategy on firm commercial footing. By turning a massive power and data-center footprint into a contracted compute product, Riot can potentially smooth revenue compared with the volatility associated with mining economics.
Market observers will likely watch whether the delivery milestones—96 megawatts by December 2027 and the full 191 megawatts by June 2028—are met as planned. The staged ramp matters not only for revenue recognition, but also for the ability of Anthropic to plan training and deployment schedules. The inclusion of extension options also suggests that the parties expect ongoing demand for compute beyond the initial term.
For now, the $9.1 billion compute agreement stands as one of the clearest signals in recent reporting that AI developers are securing dedicated infrastructure at scale, locking in power capacity for decades and reshaping how compute is financed, built, and delivered. In a market where supply constraints have become a key bottleneck, Anthropic’s reported contract with Riot positions both companies to participate directly in the next phase of the AI compute buildout. Bloomberg
Technmeme also flagged the announcement in its news digest, linking it to broader themes about AI diffusion and the competitive dynamics among major platform players. The report cited a substantial after-hours stock reaction and framed the agreement as a notable milestone in the “AI race.” Techmeme
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