Anthropic has struck a $9.1 billion deal with Bitcoin miner Riot Platforms to secure AI computing capacity from its Texas data centre campus.

The agreement, first reported by Bloomberg, was confirmed after Riot disclosed on Monday that it had signed a 20 year deal to supply computing capacity to a “leading frontier AI” company, without naming who it was at the time.

People familiar with the matter later identified that customer as Anthropic, the company behind the Claude chatbot.

Here’s what the deal actually involves. Riot will supply 191 megawatts of computing capacity from its campus in Rockdale, Texas, enough power to run around 143,000 homes at any given moment.

The contract runs all the way through June 2048 and is expected to bring in $9.1 billion in revenue for Riot. There’s also room for it to grow further.

The agreement includes two five year extension options, which could push total sales as high as $16.1 billion if both are exercised.

This isn’t Anthropic’s first big infrastructure move recently. The AI firm has been on something of a spending spree to keep pace with demand for its tools.

It signed a $10 billion agreement earlier this year with Volta Infra Holdings, a relatively new infrastructure startup, and in May it agreed to buy nearly $45 billion worth of computing power from Elon Musk’s xAI.

Riot’s own story adds an interesting angle here. The company started out making diagnostic equipment for the biotech sector under the name Bioptix, before pivoting entirely into Bitcoin mining.

It’s now one of several crypto miners repositioning themselves as AI infrastructure providers, chasing the same computing boom that’s reshaping the sector.

Riot shares jumped 25% to $24.40 in late trading once news of the Anthropic deal broke.

Riot has not commented publicly on the agreement, and Anthropic has not responded to requests for comment either.

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