Anthropic Signs $9.1 Billion Data Center Deal With Riot Platforms

Anthropic has announced an agreement valued at roughly $9.1 billion with Riot Platforms covering data center capacity. The deal was reported on August 11, 2026 by Bloomberg and picked up by financial news services, which noted a sharp rise in Riot Platforms shares in the hours after the announcement. The transaction illustrates a broader industry trend: converting infrastructure originally built for cryptocurrency mining into hosting sites for AI compute. Such facilities offer attributes prized by AI labs — high-capacity grid interconnections already negotiated, available land, and teams experienced in running high-density halls — in a market where access to electricity has become the main constraint. For Anthropic, the deal fits a strategy of diversifying sources of compute capacity. Training and, increasingly, inference for large language models require multi-year commitments at considerable scale, which traditional cloud providers cannot always absorb alone given sector-wide demand. For Riot Platforms, a long-term contract with an AI customer provides revenue visibility of a different nature from mining, whose profitability depends on the bitcoin price and the schedule of reward halvings. The stock market reaction reflects investor interest in that pivot. Detailed contract terms — the timetable for capacity delivery, the sites involved, and the payment schedule — were not fully disclosed publicly at the time of initial reports.