2026-10-26 — Anthropic’s S-1 sets out compute commitments to SpaceX, Microsoft, Google and Amazon and about $808 billion in minimum obligations

• Wired reported that footnotes in Anthropic’s S-1 put the future minimum payment obligations of compute and infrastructure leases started or amended since December 31, 2025 at approximately $417 billion in aggregate — Wired reports a further $245 billion added since June 30, all related to infrastructure agreements. (Wired) Claims: kat-claim-757f8421ed3a
• Wired reported that the S-1 adds $125 billion to $150 billion for expanded commercial agreements that “have not yet been finalized” and $21 billion of short-term minimum non-cancelable payments — Wired puts Anthropic’s total minimum obligation at an estimated $808 billion if it follows through on all of them; the $808 billion is Wired’s tally. (Wired) Claims: kat-claim-3bc8773f1b85
• The Verge reported that the S-1 details compute commitments of roughly $3.1 billion a month to SpaceX for access to Nvidia GPUs once all planned capacity is delivered, totaling as much as $120.5 billion by 2029 — Earlier reports on the SpaceX Colossus thread put Anthropic’s rental of all of Colossus 1 at $1.25 billion a month through May 2029. (The Verge) Claims: kat-claim-669396c6a6b9
• The Verge reported that the S-1 lists commitments of $44.9 billion with Microsoft through 2033, at least $114.5 billion with Google through 2033 and $110 billion with Amazon over the next ten years — Reuters’ reports of 2026-09-29 on the confidential prospectus gave at least $31.4 billion (Microsoft), at least $111.1 billion (Google) and at least $110 billion (Amazon). (The Verge) Claims: kat-claim-f370ffdc5345, kat-claim-4867b3669390, kat-claim-177cc37997f6
• Wired reported that the S-1 describes Anthropic’s chips as a “single, fungible pool from multiple strategic partners,” including Amazon, Google, Nvidia and AMD (Wired) Claims: kat-claim-e27c94d67d35
• TechCrunch reported that the S-1 states Amazon, Google and Microsoft may prioritize their own requirements or rivals they have invested in — Anthropic says this could make it difficult to secure the compute it needs from them. (TechCrunch) Claims: kat-claim-bb11c00b0aae
• The Verge reported that the S-1 states some of Anthropic’s planned data centers rely on electricity generated by natural gas turbines on-site (The Verge) Claims: kat-claim-d7cb2cd6aad2
• The Verge reported that the S-1 says that without a secure gas supply and pipelines to transport it, Anthropic might need to delay or abandon planned data center projects (The Verge) Claims: kat-claim-9fb22605f384

2026-10-19 — Anthropic and Nscale reported close to announcing a second $45 billion compute deal

• Bloomberg, citing people familiar with the matter, reported that Anthropic and Nscale are on the verge of announcing another $45 billion compute deal, TechCrunch reported — TechCrunch says the two companies announced a first $45 billion compute deal a little over a month earlier, and that the sources cautioned talks are still underway and details could change. (TechCrunch) Claims: kat-claim-5bc615f691f2

2026-10-02 — Broadcom’s $60 billion debt package

• Broadcom is assembling $60 billion of debt financing to help Anthropic and other companies buy AI chips, Bloomberg reported The package has a $42 billion senior-secured Class A tranche and an $18 billion junior tranche led by Blackstone, which is putting up $9 billion of its own capital; Broadcom declined to comment. (Quartz via Yahoo Finance, citing Bloomberg)

2026-10-01 — Broadcom to lend Anthropic up to $42 billion

• Broadcom has agreed to lend Anthropic up to $42 billion to finance its chip leases, according to Anthropic’s confidential IPO filing as described by Reuters The convertible note could fund about a third of a $125.2 billion five-year TPU lease, and the filing flags “potential conflicts of interest” in Broadcom’s dual role as supplier and lender. (CNBC, carrying Reuters)

2026-09-29 — Anthropic’s prospectus breaks down a $518 billion, mostly non-cancelable buildout

• Anthropic’s prospectus commits it to at least $518 billion of infrastructure spending over a decade with six partners, about 80% non-cancelable or payable regardless of usage, Reuters reported At least $111.1 billion with Google, $110 billion with Amazon and $31.4 billion with Microsoft, plus about $161.2 billion of largely non-cancelable Broadcom-related equipment leases; xAI agreements could reach $84.5 billion but are largely cancelable on 90 days’ notice, and AMD committed to buy up to $5 billion of Anthropic stock. (Reuters, Northland News Radio)

2026-09-22 — Nscale’s own IPO filing puts a primary-source number on the West Virginia lease this thread has tracked as unconfirmed since August — and disclosed that Anthropic can walk away

• Nscale, the British data-center developer behind the $45bn West Virginia lease this thread logged 08-26 as “neither company confirmed on the record,” filed for a NYSE IPO (ticker NSCL) on 09-18/19 disclosing the Anthropic agreement is actually valued at $44.6 billion for an eventual 8-gigawatt facility, and that Microsoft and Anthropic together account for 85% of Nscale’s total $103 billion contract backlog. The filing is the first primary-source confirmation of the deal’s existence and scale, but it also discloses risk this thread’s watch line asks about directly: Nscale states it has not yet secured financing for the Anthropic buildout, and that Anthropic can walk away from the agreement if Nscale fails to hit defined construction milestones or sustain contracted computing-performance levels. Only $2.6 billion of the $103 billion in total contract value was “active” (i.e., generating revenue) as of end-August, against a $1.02 billion net loss on $140.6 million of first-half-2026 revenue — a concentration and execution-risk picture on the vendor side of a lease this thread has otherwise only measured from Anthropic’s obligation side. (Bloomberg, Investing.com)
• CNBC reported 09-18 that Anthropic (and separately OpenAI) is sounding out much smaller data-center capacity deals — in the 20-30 megawatt range — across the UK and Nordics, a sharp contrast to every arrangement already on this thread, all measured in hundreds of megawatts to multiple gigawatts. Sourcing is to four people familiar with the Anthropic conversations; the stated rationale is a workload-shape distinction the thread hasn’t tracked before — training needs large single-site clusters, but inference (serving already-deployed models to live users) is well suited to smaller, geographically distributed capacity. If it holds, this adds a second deal category to the thread’s “rent and anchor” pattern: small, distributed inference leases alongside the gigawatt-scale anchor tenancies (Nscale, Lambda, Rum Group, the new Australian facility) already tracked here. (CNBC)
• Anthropic is in early talks to lease up to 1GW of compute capacity directly from Stream Data Centers, the developer majority-owned by Apollo Global Management, The Information reported Tuesday (09-22) — a deal data-center developers say would require at least $40 billion in capital investment and would make Anthropic a direct tenant rather than a cloud-provider customer. The site would run TPUs designed by Google and Broadcom (Nvidia GPUs are also possible), with Google potentially providing a credit guarantee on unclear terms; capacity and deal structure remain under negotiation. This would extend Anthropic’s hardware diversification beyond its existing $100bn/10-year, up-to-5GW AWS commitment and its up-to-2GW AMD Instinct MI450 deal — Anthropic co-founder and chief compute officer Tom Brown said in July that “running across a diversified range of hardware lets us map the right workloads to the right hardware.” Anthropic has already signed a 20-year, ~401MW lease with TeraWulf in Kentucky on the same direct-tenant model. (Blockspace Media, citing The Information)

2026-09-16 — Anthropic signs its first Australian data centre, a ~$32B facility west of Brisbane that would be the country’s largest

• Anthropic signed its first Australian data-centre lease, at the new Western Downs Digital Park near Dalby, Queensland, announced by the Queensland premier in parliament — a facility reported at roughly $32 billion (A$/US$ conversion varies by outlet) that would be Australia’s largest, drawing power equivalent to about 1.5 million average Australian households. The deal is subject to Foreign Investment Review Board approval and the park is expected to open next year. This extends the thread’s pattern (rent-and-anchor, not own) into a new country and a new category of counterparty — a state-government-brokered digital park lease rather than a hyperscaler or crypto-miner counterparty. (ABC News Australia)

2026-09-14 — Anthropic signs a $13.7bn, six-year compute deal with Rum Group (formerly Rumble), a company with Trump-administration ties, and takes an option on 51 million of its shares

• Anthropic agreed to a $13.7 billion, six-year compute deal with Rum Group — the AI-infrastructure company formerly known as Rumble, which has longstanding ties to the Trump administration — for capacity at a data center under construction in Maysville, Georgia (120MW of grid power now, expandable to 180MW), and received an option to buy up to 51 million Rum Group shares at one cent each. Rum Group had stated in an August 2026 filing that it lacked financing for the data center’s construction and GPU purchases; this deal appears to solve that gap while extending this thread’s now-familiar pattern to its most politically notable counterparty yet. Rum Group’s stock rose almost 12% on the report. (The Information)

2026-09-03 — FluidStack, the GPU-cloud builder behind Anthropic’s $50bn capacity deal, reaches an $18bn valuation

• FluidStack, the London-founded GPU-cloud operator that holds a roughly $50 billion multi-year capacity agreement with Anthropic and is building TPU capacity for Google, has reached an $18 billion valuation, Forbes reported on 09-03 — completing the round Bloomberg had reported in April as talks for about $1 billion led by Jane Street, at more than double the $7.5 billion mark FluidStack carried before the Anthropic deal. It makes the company a third independent capacity vendor alongside CoreWeave and Nebius rather than a sub-scale contractor, and puts a price on the counterparty carrying a large share of Anthropic’s committed compute. Forbes’ text could not be read past its bot wall; the valuation is from the headline and Bloomberg’s April reporting, the deal size from the April reports. (Forbes, 09-03, Bloomberg, 04-14)

2026-08-31 — Anthropic signs a $35bn compute deal with Nvidia-backed Lambda, its sixth or seventh outside-cloud infrastructure arrangement in months

• Anthropic agreed to a $35bn multi-year computing deal with Lambda, a Nvidia-backed cloud provider, for roughly 350MW of GPU capacity at a data center in Nueces County, Texas being developed by Hut 8 — a bitcoin miner turned AI-infrastructure company — with Nvidia itself holding the underlying site lease, putting Nvidia in the position of both Lambda’s investor and the GPU supplier for its own customer’s customer. First reported by the Wall Street Journal and Bloomberg the evening of August 31. This fits the exact pattern this thread already tracks (rent-and-anchor rather than own, capex on someone else’s balance sheet) alongside SpaceX, Volta, Riot, Theseus and Nscale, but it is not on the thread — checked the full timeline for “Lambda,” “Hut 8,” and “Nueces,” no hits. (Bloomberg, TechRepublic)

2026-08-26 — A sixth counterparty, and a chip generation not yet shipped

• Anthropic committed $45 billion over six years to rent roughly 460 megawatts of compute from Nscale’s 2,250-acre West Virginia campus (theoretical build-out to 8GW), which will run Nvidia’s next-generation Vera Rubin chips coming online late 2027. Reporting frames it as capacity locked in ahead of a potential IPO. The pattern holds for a FIFTH time as a LEASE, and a sixth infrastructure move overall — SpaceX (~$45B), Volta ($10B/Norway), Riot Platforms ($9.1B), Theseus (Macquarie/GIC), and now Nscale: rent and anchor, never own, so the capex sits on someone else’s balance sheet while the lease obligation sits on Anthropic’s. New this time: the deal is priced against silicon that hasn’t shipped yet. ⚠️ The two counts describe the same roster from different angles: five ANCHOR LEASES (SpaceX, Volta, Riot, Theseus, Nscale) and six infrastructure MOVES, the sixth being the reported ~$6B Decart acquisition of 2026-08-13 — a different instrument, an outright purchase rather than a rental, and still only in talks. Say which count is meant. Second correction: the Nscale arrangement is a straight six-year capacity lease, not equity or debt between the two companies, and it remains sourced to reporters citing people familiar — neither company has confirmed it on the record, and Anthropic’s own newsroom carried no release on it when checked directly on 08-27. (Bloomberg)

2026-08-21 — Anthropic buys the ability to design its own silicon

• Anthropic hired Amir Salek — founder and head of Google’s custom-silicon division 2013-2022, covering the first seven TPU generations — onto its compute team under James Bradbury. For this thread the significance is where it sits relative to the Broadcom SPV: the same week Anthropic is reported to be the beneficiary of a $70-80bn debt vehicle to build chip capacity, it hires the person who has built a hyperscaler chip program from nothing before. Buying capacity and building capability are different bets and it is now making both. (Bloomberg, Seeking Alpha)

2026-08-13 — A fifth move, but a different shape: an outright acquisition, not a lease

• Anthropic is reportedly in talks to acquire Israeli AI infrastructure startup Decart for roughly $6B — what would be Anthropic’s largest acquisition ever, and its first outright purchase in this run rather than a rental/anchor-tenant arrangement. Decart builds chip-efficiency and optimization software (plus its own real-time video and robotics-simulation models); Anthropic reportedly wants the technology to help Claude’s infrastructure absorb rising demand ahead of a public listing. Answers this thread’s own watch question — “whether any arrangement converts to ownership” — in the opposite direction: instead of an existing lease converting to ownership, this would be Anthropic buying the capability outright from the start. Decart had reportedly been close to a deal with Nvidia before higher offers emerged; talks are early-stage and could fall through. (Fortune, Calcalist)

2026-08-11 — Opened

• Opened because four arrangements accumulated across three months with each one logged to a different thread and the pattern never stated. Circular Financing’s entity list is nvidia/openai/oracle with no Anthropic; Anthropic IPO is about the listing, not the capacity.

• The question here is narrower than circular financing: who ends up holding the asset. Circular Financing asks whether the money is going in circles. This thread asks who owns the buildings and who owes the rent when the leases run their term.

2026-08-10 — Two arrangements in one day, both moving the asset off Anthropic’s balance sheet

• Anthropic, Macquarie Asset Management and Singapore’s sovereign fund GIC launched Theseus Infrastructure, which will develop, own and lease purpose-built data centres to Anthropic as anchor tenant under long-term agreements — Macquarie and GIC funding the majority of equity per project, initial focus the United States, no dollar figure disclosed (“the planned developments will require significant capital investment”). (Macquarie Group, Bloomberg)

• Anthropic separately signed a $9.1B, 20-year compute deal with Riot Platforms, a bitcoin miner turned AI landlord — the counterparty mix continuing to drift away from hyperscaler clouds toward converted mining and infrastructure capital.

• The Theseus terms include Anthropic covering consumer electricity price increases arising from these sites. A lab contractually absorbing ratepayer costs only makes sense against organised opposition — the same backlash that turned data-centre siting into a bipartisan 2026 midterm issue (see Grid & Turbines). The financing structure and the siting fight are now visibly responding to each other.

2026-08-05 — Volta: a third supply route in a week

• A $10B, six-year cloud-capacity deal with Volta, an Nvidia Cloud Partner-program startup, centred on a 133MW Nvidia Vera Rubin-powered data centre in Norway built with Bitdeer — event-dated 08-04/05 and found late on 08-06.

← Backstory

• SpaceX (~$45B) — the largest of the four arrangements and the earliest of this run, carried on Colossus and Musk Megacap at the time. Reproduced here as the first entry in the pattern rather than re-reported; see those threads for its own timeline.

• Compute has been vendor-financed from several directions in parallel — AMD’s finalized multi-GW deal, a $30B Azure commitment, an unpriced Google TPU deal, and Google guaranteeing ~$15B in bank debt for a dedicated Texas campus (07-31). Those sit on Circular Financing and Anthropic IPO; noted here because they are the balance-sheet context this thread’s lease obligations land on top of.