Anthropic is paying SpaceX $1.25 billion per month through May 2029 as part of the massive compute deal the companies signed earlier this month.

Why it matters: It's a massive bill but comes as Anthropic's revenue is taking off and the company is hampered by a lack of compute power.

It also is a significant boost to SpaceX, whose annual revenue is only around $18 billion per year.

Driving the news: Anthropic and SpaceX announced their deal last month, but did not initially provide financial details.

SpaceX announced the monthly payments as part of its filing for an initial public offering , released Wednesday.…