The Headline Number Is Real. The Context Is Complicated.

xAI's IPO filing dropped Wednesday, and the major revelation isn't the AI model business. It's a single line: Anthropic, the AI company behind the Claude model, is paying $1.25 billion per month for compute capacity at xAI's Colossus data centers in Memphis, Tennessee.

Run the math. That's $15 billion a year. Over the deal's term through May 2029, it clears $40 billion — assuming neither party walks. An Anthropic spokesperson confirmed the monthly figure to Business Insider.

Musk's AI company is now one of the biggest AI infrastructure landlords on the planet.

What Anthropic Is Getting

According to the BigGo Finance analysis of the SEC filing, Anthropic gets access to 300 megawatts of compute capacity and more than 220,000 Nvidia GPUs at Colossus 1 near Memphis. The deal also includes capacity from Colossus 2, xAI's newer facility.

Anthropicʼs compute chief, Tom Brown, wrote in May that the Colossus compute will be used for inference — meaning running the AI models to generate outputs for customers, not training new ones. Inference is the expensive, ongoing cost of serving millions of users. Anthropic has a compute shortage problem. This deal addresses it, for now.

Both sides have a 90-day exit ramp. Anthropic receives a discounted rate in May and June while xAI finishes ramping up operations. This is a significant contract with a meaningful escape clause on both sides.

Musk's Sales Pitch — And the Fine Print

Musk posted on X that the Anthropic deal proves xAI "is offering AI compute as a service at significant scale" and that talks with other companies are already underway. He mentioned orbital data centers as a long-term play — essentially running AI compute from space on Starlink satellites.

AI code editing startup Cursor already announced it would use xAI data center capacity, according to Data Center Dynamics. xAI is expected to acquire Cursor within 30 days of its IPO, which makes that deal more of an internal arrangement than a typical customer win.

The xAI S-1 describes this as a "dual monetization strategy" — sell spare compute to external customers while keeping enough headroom for internal AI development. The numbers get more complicated when examined closely.

The "1 Gigawatt" Claim Needs Unpacking

xAI's IPO documents repeatedly reference 1 gigawatt of data center capacity. Musk has made this claim publicly. The filing defines this figure as "nameplate compute draw" — calculated by multiplying installed GPUs by their rated power draw.

The filing explicitly states this figure "reflects installed capacity and does not represent actual power consumption or utilization."

Translation: the GPUs are physically installed. They may NOT be fully powered up and running. According to Data Center Dynamics, satellite imagery from January showed Colossus 2 had cooling equipment installed capable of managing only 350 megawatts — not 1 gigawatt.

The chart in the IPO filing shows nameplate capacity grew from 300MW in March 2025 to 1GW in March 2026. Paper capacity and live, billable compute are two different things. Investors should understand which one they're evaluating.

The Money Isn't All Going One Direction

xAI is burning money at a staggering rate.

According to Business Insider's review of the S-1, AI losses from operations hit more than $6 billion last year — a fourfold increase — driven by cloud costs and GPU depreciation. In Q1 2026 alone, losses more than doubled to nearly $2.5 billion.

xAI spent $12.7 billion on AI infrastructure in 2025. It dropped another $7.7 billion in just the first quarter of 2026.

The Anthropic deal brings in $1.25 billion a month. xAI is spending the equivalent of roughly $2.5 billion a month on losses alone in Q1 2026. The deal helps. It does not yet make this a profitable operation.

The filing discloses that xAI uses Google Cloud — meaning it's paying a competitor while trying to compete in the same cloud market. xAI also listed manufacturing its own GPUs as a planned capital expenditure. If true, that puts Musk on a direct collision course with Nvidia, which dominates the advanced GPU market. No timeline or specifics — just a line item signaling massive future spending.

The IPO Itself

xAI is targeting a public offering expected around June 12, looking to raise upwards of $75 billion, according to Data Center Dynamics. That would be one of the largest IPOs in American history.

The Anthropic deal clearly timed to land before the IPO roadshow. A $40 billion contracted revenue line is the type of figure used in a prospectus to justify a $75 billion valuation.

What This Means for Regular People

For investors, understand what you're actually buying. xAI's AI infrastructure play is real but bleeding cash, with massive capital expenditure, a key customer on a 90-day termination notice, and capacity claims that need scrutiny. Musk's separate rocket business, SpaceX, is world-class and profitable — but that is a distinct company not being taken public here.

For American taxpayers, SpaceX — Musk's rocket company — has significant government contracts funding its core operations. xAI, the AI company filing for IPO, has benefited from the broader Musk ecosystem that context helped build. That's worth keeping in mind.

For those watching the AI arms race: the fact that Anthropic — partially backed by Google and Amazon — is paying Musk's xAI over a billion dollars a month for compute reflects how desperately the AI industry needs GPU power right now.

Nobody has enough. Not even close.