Anthropic signed a 20-year, $9.1B lease for 191 MW of capacity at Riot Platforms' Rockdale campus in Texas, per Bloomberg, marking the Bitcoin miner's biggest pivot into AI infrastructure.

The contract runs through June 2048, with full deployment targeted for June 2028 and 96 MW online by December 2027. Extension options could lift total revenue to $16.1B. Riot secured $573M from Morgan Stanley for initial construction, and its shares jumped about 25% after-hours.

It is the clearest sign yet of Bitcoin miners repurposing cheap power and ready-built sites into compute for the AI boom.