A bitcoin miner just became
Anthropic's landlord.
Bitcoin miner Riot Platforms has signed a 20-year, $9.1 billion data-center lease with a "leading frontier AI" company. Bloomberg named the tenant as Anthropic — the third mega compute deal in three months, after AMD and Volta. Here's what's actually in the contract.
In a GPU-scarce era,
AI is subletting the grid
The scramble for data-center land and power has turned crypto miners into a new supply channel for AI infrastructure.
Riot Platforms announced on August 11 that it would lease 191 megawatts (MW) of IT capacity at its Rockdale, Texas campus under a 20-year deal worth roughly $9.1 billion. The agreement runs through June 2048, and two five-year extension options could push the total value to as much as $16.1 billion. Riot didn't name the tenant, but Bloomberg reported, citing people familiar with the matter, that it is Anthropic.
For Anthropic, this is the third mega compute deal in three weeks, following its AMD agreement on July 23 and its Volta agreement on August 5. Per CNBC's reporting, Riot has now signed just over 241MW of long-term capacity worth roughly $9.8 billion with two of the most important AI companies in a little over six months — a clear sign that bitcoin miners are pivoting hard into AI infrastructure supply. The bottleneck isn't just GPUs anymore; it's power contracts and data-center land.
The deal, by the numbers
Who it affects, and how
Nothing changes today. But what to watch depends on where you sit.
For developers
Not for a while. The first 96MW phase is due December 2027, full 191MW by June 2028. This deal doesn't change today's Claude API rate limits or latency.
For procurement & enterprise buyers
Read it as supply diversification away from pure Nvidia-GPU dependence. Repurposing already-powered sites is a sourcing tactic worth weighing when you assess a vendor's supply reliability.
For market watchers
Riot's stock surged more than 25% in after-hours trading. The market read this as a vote of confidence in bitcoin miners' pivot into AI infrastructure.
Aug 11, 2026 — Deal signed (per reporting)
Riot disclosed the deal without naming the tenant; Bloomberg identified it as Anthropic citing sources. Neither company had confirmed the tenant's identity on the record as of this writing.
Dec 2027 — First 96MW online
Just over half of the total 191MW comes online first.
Jun 2028 — Full 191MW online
From here, the up-to-20-year supply agreement runs through June 2048.
Swap the mining rig's power cord
for a GPU's.
This isn't unambiguously good news
Start with the caveat: as of this writing, this deal has not been officially confirmed by either Anthropic or Riot. Riot's own disclosure only describes the counterparty as a "leading frontier AI" company — treat the Anthropic identification, however well-sourced, as reporting rather than a confirmed fact.
Execution risk is real too. It's unproven whether facilities built for bitcoin mining can be retrofitted to the far stricter uptime and reliability standards AI/HPC workloads demand. The financing is staged and leans on a $573 million interim facility from Morgan Stanley — a structure sensitive to shifts in rates or credit conditions. There's also the question of added load on the Texas power grid (ERCOT), which could become a point of community and environmental debate.
What to watch next is whether the first milestone — 96MW online by December 2027 — actually lands on schedule. A slip or an early delivery there will be a useful leading indicator for how other miners' AI pivots go, and for how fast Anthropic keeps adding infrastructure after this.