Bitcoin miners are billing about 550 MW of more than 4 GW signed for AI work
IREN shares rose 5% premarket on a reported Anthropic cloud contract that neither company has confirmed. CoinShares puts miners' AI and HPC backlog above $100 billion with only about 550 MW billing, so a signature is the first of several steps to revenue.
The Investor · Invest desk
IREN run-rate revenue operating as of August 26: $1 billion, of $4 billion contracted for 2026 capacity. IREN AI cloud services revenue, fiscal 2026: $128.8 million, up from $16.4 million in fiscal 2025. IREN mining revenue, fiscal 2026: $578.2 million.
| Figure | Value | Note | Claim |
|---|---|---|---|
| IREN run-rate revenue operating, as of August 26 | 1 billion USD | of $4B contracted for 2026 capacity | 8 |
| IREN AI cloud services revenue, fiscal 2026 | 128.8 million USD | up from $16.4M in fiscal 2025 | 10 |
| IREN mining, fiscal 2026 | 578.2 million USD | 11 |
What happened
- Blockspace, citing The Information, reported the contract on October 12 without giving its value, capacity or delivery timeline.
- In an August 27 announcement, IREN said a new customer described as a leading AI lab had signed, and it did not name the customer.
- IREN reported $4 billion in contracted annualized run-rate revenue for its 2026 capacity, with only $1 billion operating as of August 26.
- In its SEC disclosure, IREN warned that "recognized revenue may be materially lower."
- IREN has delivered the 50-MW Horizon 1 to Microsoft, is commissioning Horizon 2, and expects Horizons 3 and 4 in the fourth quarter of 2026, subject to resources.
Why it matters
- What it limits constraint Mining cannot pay for the retrofit: Bitcoin closed the second quarter at $58,400, about 22.6% under the $75,500 per coin miners cite as cash cost, so conversion money has to come from customers and lenders.
- Who has to decide decision Each miner that cancels rig orders, as Core Scientific did for over $41.9 million, stops adding to the business that earns today and depends on its AI build arriving on time.
- What doesn't add up contradiction IREN's $1 billion operating run-rate would be about 91% of the $1.1 billion CoinShares counts for all miners, so either IREN is nearly the whole sector or the two figures measure different things.
Next story · Invest · Oct 6
Meta halves internal use of Anthropic's Claude Code to about 30,000 staffConfirmed6 publishers
Divide 550 by 4,000 and billing is 13.75% of signed capacity [23], a ceiling, because CoinShares says miners have contracted more than 4 GW [6]. At least 3,450 MW is not billing [24]. CoinShares puts the cost of building a megawatt for AI at $8 million to $15 million, against under $1 million for bitcoin mining [17]. If all of the unbilled remainder still had to be built, that is $27.6 billion to $51.75 billion [25]. The sources did not disclose whether the per-megawatt figure includes GPUs, so treat the total as a sense of scale. The 550 MW that bills supports about $1.1 billion a year [5], or $2.0 million a megawatt [26], and that makes a megawatt's build cost four to 7.5 years of its current revenue before operating costs [34].
Debt is the second cost. The $3.6 billion at 6% for Microsoft's GPU projects and the $2.4 billion at 9% for Mackenzie growth [15] each cost $216 million a year in interest, $432 million in total at a blended 7.2% [28]. If all of it were drawn, that interest would equal 43% of the $1 billion run-rate now operating and 10.8% of the $4 billion contracted [29]. Prepayments that cover 45% to 55% of GPU costs on new contracts [16] would pull the drawn balance lower.
The income statement shows how early the ramp is. AI cloud revenue grew 7.85-fold [33], yet mining still brought in $578.2 million [11]. The $702.6 million net loss falls to $63.8 million once the $638.8 million non-cash impairment, mostly from decommissioning mining rigs, is removed [12][32].
We think signed backlog overstates near-term cash by a wide margin, and that billing megawatts is the figure to track. The counter-thesis has numbers behind it: IREN has 25% of its contracted run-rate operating [27], against the sector's 13.75% ceiling.
The Anthropic report can go several ways. IREN or Anthropic confirms it with a value, capacity and date. Or the contract is confirmed and Horizons 3 and 4, whose commissioning depends on equipment, power and customer approvals [14], slip past the fourth quarter. Or the unnamed lab in IREN's August 27 notice [7] is not Anthropic. The Cryptopolitan and Yahoo Finance accounts both rest on the one report in The Information [2][3], so together they count as one source.
The one deal in these sources with a date, a value and a term is Akamai's, announced September 24, 2026: $11.6 billion over seven years [20], about $1.66 billion a year [31], with a warrant for up to 5% of Akamai going to Anthropic [21]. It covers CPU workloads, not the GPU capacity miners are building [22], but its annual value is above the $1.1 billion CoinShares counts across all billing miners [5]. We would be wrong if the operating run-rate closed most of its gap to the $4 billion contracted once Horizons 3 and 4 are commissioned, with no rise in borrowing beyond the facilities already secured.
What to watch
- IREN or Anthropic confirming the contract, with a value, capacity and delivery date.
- Whether Horizon 2 finishes commissioning and Horizons 3 and 4 land in the fourth quarter of 2026.
- CoinShares's next count of billing megawatts against the 550 MW now reported.
Information, not investment advice. This story is general information about companies and markets, drawn from cited reporting. It is not a recommendation to buy, sell or hold any security; check the cited sources before acting.
Clarity's read
What the record supports and how the coverage leans. The claims behind it follow.
Reality
- Evidence45
- Adoption14
- Hype gap+45
- Incentives
- Not scored
- Confidence55
Claim ledger
Ranked by verification strength, evidence, and original report placement.
- [1]
IREN shares climbed 5% in premarket trading on Monday following a report that the company had signed a multi-year agreement to provide AI cloud computing services to Anthropic.
- [2]
On October 12, Blockspace, citing a report from The Information, said IREN signed a multi-year cloud contract with Anthropic, without providing its value, capacity or delivery timeline.
- [3]
Yahoo Finance's account of the reported IREN-Anthropic agreement attributes it to The Information and says financial terms, capacity and implementation schedule were not disclosed in the report.
- [4]
Neither IREN nor Anthropic has confirmed the reported multi-year cloud deal.
- [5]
CoinShares estimates miners have more than $100 billion of AI and HPC backlog, supporting yearly revenue of $1.1 billion.
- [6]
Only about 550 MW is currently billing out of more than 4 GW contracted by miners.
- [7]
In an August 27 announcement, IREN said a new customer described as a leading AI lab had signed up, without naming it.
- [8]
IREN reported $4 billion in contracted annualized run-rate revenue for its 2026 capacity, of which only $1 billion was operating as of August 26.
- [9]
In its SEC disclosure IREN warned that "recognized revenue may be materially lower."
- [10]
IREN's AI cloud services revenue reached $128.8 million in fiscal 2026, up from $16.4 million in fiscal 2025.
- [11]
Mining contributed $578.2 million of IREN's revenue in fiscal 2026.
- [12]
IREN reported a net loss of $702.6 million, including $638.8 million of non-cash impairment losses due mainly to the decommissioning of mining rigs.
- [13]
IREN has delivered Horizon 1, a 50-MW liquid-cooled facility, to Microsoft; Horizon 2 is being commissioned; Horizons 3 and 4 are expected to be completed in the fourth quarter of 2026, subject to the availability of resources.
- [14]
Commissioning of the facilities relies on having the necessary equipment, power and due approval from customers.
- [15]
IREN has secured $3.6 billion at 6% to finance Microsoft's GPU projects and $2.4 billion at 9% for its Mackenzie growth.
- [16]
About 45% to 55% of the GPU costs of new contracts are covered by customer prepayments.
- [17]
CoinShares puts the cost at $8 million to $15 million per MW for AI, against under $1 million for bitcoin mining.
- [18]
Bitcoin's closing price for the second quarter of 2026 was $58,400, below what miners say is the cash cost of mining, $75,500 per coin.
- [19]
Core Scientific spent over $41.9 million to cancel its equipment orders.
- [20]
Akamai announced on September 24, 2026 a contract involving Anthropic worth $11.6 billion over seven years, which can go up to $20 billion.
- [21]
Anthropic was granted a warrant for up to 5% of Akamai's shares as part of the deal.
- [22]
The Akamai deal provides CPU workload capacity, not the GPU capacity miners are developing.
- [23]
Billing capacity is at most 13.75% of contracted capacity.
- [24]
At least 3,450 MW of contracted capacity is not billing.
- [25]
Building 3,450 MW at $8 million to $15 million per MW would cost $27.6 billion to $51.75 billion.
- [26]
Billing capacity earns about $2.0 million per MW per year.
- [27]
25% of IREN's contracted run-rate revenue was operating as of August 26.
- [28]
The two IREN financings cost $216 million a year each, $432 million in total, a blended 7.2% on $6.0 billion if fully drawn.
- [29]
If fully drawn, annual interest of $432 million equals 43% of IREN's $1 billion operating run-rate and 10.8% of its $4 billion contracted run-rate.
- [30]
Bitcoin's Q2 2026 close was about 22.6% below the miners' stated cash cost.
- [31]
Akamai's $11.6 billion seven-year contract is worth about $1.66 billion a year.
- [32]
IREN's net loss excluding the non-cash impairment is $63.8 million.
- [33]
IREN's AI cloud revenue grew about 7.85 times year on year.
- [34]
At $2.0 million of revenue per billing MW, an $8 million to $15 million build cost equals four to 7.5 years of revenue, before operating costs.
- [35]
IREN's $1 billion operating run-rate would be about 91% of the $1.1 billion CoinShares attributes to all miners.
Sources
2 independent publishers whose own reporting we read for this story.
- cryptopolitan.comBitcoin miners have $100B in AI deals but little revenue so far
1 article · October 12, 2026
- finance.yahoo.comIren Shares Rise 5% Premarket Following Reported Multi-Year AI Cloud Deal With Anthropic
1 article · October 12, 2026