Broadcom sold Anthropic $63 billion of chips this week. The sale alone left the deal short of closing.
Four of Wall Street's biggest lenders wanted a guarantee first. Broadcom gave them one, on $43.5 billion of the money13. Does a chip seller's own promise to cover the bill prove the buyer can pay it?
The Guarantee Behind the Headline
A new entity sits at the center of this deal. Lenders call it a special purpose vehicle. It exists only to buy Broadcom's chips and lease them to Anthropic, starting in 20271.
Bank of America, Citigroup and Morgan Stanley fund the senior loan, with Blackstone alone funding the slice below it. Broadcom backs the senior loan too. Bankers call this residual value support. It is a promise to cover the gap if the hardware is worth less than expected when the lease ends13.
That promise covers $43.5 billion, 69 percent of the whole deal3. Broadcom plays two roles here. It sells the chips, and it insures its own sale.
Broadcom guarantees 69 percent of its own $63 billion chip sale
Share of the Anthropic financing SPV covered by Broadcom's residual value support, as of Oct. 27, 2026
Sources: Pulse 2.0 [1]; XenoSpectrum [3]. Chart by Ryan Elliott Dennis.
The numbers behind this chart
| Item | Value |
|---|---|
| Broadcom's own guarantee | $43.5B |
| Blackstone's junior loan alone | $19.5B |
| Whole | $63B |
Why Banks Needed Convincing
This guarantee grew out of two weeks of pressure. Lenders turned nervous, worried about rising interest rates and the sheer size of AI capital spending across the industry5.
Hock Tan runs Broadcom. He spent the weekend calling bank executives himself, agreeing to pay higher interest to keep the deal alive15. Jim DeMare, Bank of America's co-president, described what his bank was buying into once Tan's calls worked. "This transaction brings together Broadcom's leading technology and significant bank capital to accelerate the buildout of compute capacity that will power the next wave of AI innovation," DeMare said.
A bank's co-president rarely issues a statement like that for a deal it considers risky. The statement followed a weekend of persuasion, well past a quick signature.
Second Chipmaker Takes the Same Bet
AMD carried its own share of Anthropic's risk this week, right alongside Broadcom. It committed more than $20 billion to its own Helios systems for Anthropic, starting in 2027. An option could add roughly that much again6.
In return, AMD agreed to buy up to $5 billion of Anthropic's stock as the hardware ships6. Lisa Su, AMD's chief executive, framed the arrangement as mutual dependence by design. "We are thrilled to deepen our partnership with Anthropic and deploy AMD Helios at gigawatt scale," Su said when the deal was announced7.
Su's word choice matters here. She called the companies' fortunes intertwined, past the terms of a simple contract. AMD now owns a stake in the same customer whose chip orders keep its factories running.
AMD reached this deal in July, months before Broadcom's guarantee became public7. Both companies had described the partnership only in general terms since then. Anthropic's own S-1 this week finally put a number on it6.
The Case That Compute Pays for Itself
Tan calls the whole structure evidence that his case holds. "This validates that there is capital available to finance such growth and that Broadcom is uniquely positioned to enable it," Tan said once the financing closed1.
Read plainly, that is a seller's claim about his own deal. Four institutions with long memories of bad credit decisions still signed their names to it, after Tan sweetened the terms15. Reluctant capital is still capital. A bank that bargains hard before it lends still signs its name, the same as one that simply trusts the borrower.
The Case Against It
Kyle Guske II reads the same facts and reaches the opposite floor. He is a senior analyst at New Constructs, a research firm that has tracked Anthropic's public filings since its earliest drafts2.
His math starts with Anthropic's own paperwork. The company's compute and infrastructure commitments run past 20 times its trailing revenue, once every planned cloud and chip contract gets counted. "Anthropic gets the compute needed to run its models from the same hyperscalers to whom it has committed to pay $518 billion," Kyle Guske II wrote2.
That $518 billion commitment sits beside two other numbers. Anthropic's S-1 this week disclosed $16.3 billion in first-half revenue and an $80.7 billion net loss4. Anthropic still has customers paying real money, Guske's point runs deeper than that. His point is that the chip sellers, the cloud providers and the lenders form an increasingly small circle of the same names.
Anthropic's compute pledges top six months of revenue 32 times over
Anthropic's disclosed commitments against its own first-half 2026 revenue, in billions of dollars
The first column is the $518 billion in compute and infrastructure commitments Anthropic has signed. The second column is the $16.3 billion it actually billed customers in the first half of 2026 alone.
The commitment figure spans years of planned spending; the revenue figure covers six months, so the two numbers measure different periods.
Sources: New Constructs [2]; TechCrunch [4]. Chart by Ryan Elliott Dennis.
The numbers behind this chart
| Item | Value |
|---|---|
| Compute pledges | $518B |
| First-half revenue | $16.3B |
Broadcom's guarantee fits that circle exactly. The company that sold the chips also insures the loan that paid for them.
What to do
Read a chip or cloud deal's press release for who is guaranteeing what, beyond who is paying. A seller's own balance sheet standing behind a buyer's loan is a different fact than a bank's independent credit judgment. Both can still produce the same signed deal. Ask what happens to that guarantee if the customer's growth slows before the hardware ships.
Watch where Broadcom's name appears next, on any lender's term sheet. A guarantee this size, once written, stays on Broadcom's books until the chips are delivered, used and paid for in full.
By the numbers
- $63 billion: total size of the financing that leases Broadcom's chips to Anthropic1.
- 69 percent: the share of that deal Broadcom itself guarantees against a drop in equipment value3.
- $20 billion: Anthropic's committed spending on AMD's Helios systems starting in 2027, with a matching option6.
- A $5 billion stake: AMD's agreed purchase of Anthropic stock as its chips ship6.
- 32 times: how far Anthropic's $518 billion in compute commitments outruns its six-month revenue24.
- $80.7 billion: Anthropic's net loss for the first half of 2026, against $16.3 billion in revenue4.
- 2027: the year deliveries begin on both the Broadcom and AMD commitments16.
What to watch
Watch Broadcom's own credit rating over the next two quarters. Rating agencies price a guarantee like this one as debt, whatever Broadcom calls it on its own books.
Anthropic's gross margin deserves the same attention, once the Broadcom and AMD hardware starts arriving in 2027. A margin that holds steady would support Tan's case. One that slips would hand Kyle Guske II's math the receipt, and Broadcom's shareholders the bill.
Sources
- Amit Chowdhry, "Broadcom And Financial Partners Arrange $63 Billion Financing For Anthropic AI Compute Capacity," Pulse 2.0, Oct. 27, 2026, https://pulse2.com/broadcom-and-financial-partners-arrange-63-billion-financing-for-anthropic-ai-compute-capacity/
- Kyle Guske II, "Anthropic Is The Most Ridiculous IPO of 2026," New Constructs, Oct. 6, 2026, https://www.newconstructs.com/anthropic-is-the-most-ridiculous-ipo-of-2026/
- Y. Kobayashi, "Broadcom May Back Up to $43.5B of Anthropic's $63B Chip Financing Deal," XenoSpectrum, Oct. 27, 2026, https://xenospectrum.com/en/broadcom-anthropic-63b-financing-residual-value/
- TechCrunch Staff, "Anthropic officially files for its public debut," TechCrunch, Oct. 26, 2026, https://techcrunch.com/2026/10/26/anthropic-officially-files-for-its-public-debut/
- Yahoo Finance Staff, "Broadcom CEO Steps In to Seal $63 Billion Anthropic Deal," Yahoo Finance, Oct. 27, 2026, https://finance.yahoo.com/technology/ai/articles/biggest-constraint-capital-broadcom-ceo-141738436.html
- Luke Lango, "Anthropic IPO: Who Wins and Who's Pressured," Investing.com, Oct. 27, 2026, https://www.investing.com/analysis/anthropic-ipo-who-wins-and-whos-pressured-200690331
- CIOL Bureau, "AMD and Anthropic Tie AI Infrastructure to Long-Term Growth," CIOL, July 22, 2026, https://www.ciol.com/news/amd-and-anthropic-tie-ai-infrastructure-to-long-term-growth-12189626