Broadcom's banks start raising $60 billion to fund AI chips for Anthropic

Update, 16 October 2026: IFR reports the prices

IFR, a news service that covers the loan market, reports in its 10 to 16 October issue that the $42 billion of senior loans backstopped by Broadcom for Anthropic is split into two equal $21 billion pieces. One piece pays 187.5bp over SOFR and the other pays 150bp over SOFR. IFR does not say which piece pays which. Both are due to be paid back on 30 September 2033. The banks running the deal, called joint lead arrangers, are Bank of America, Citigroup and Morgan Stanley. IFR says all three declined to comment.

The deal is still syndicating, which means it is still being sold on to other lenders. It is not closed.

Plain-words guide. SOFR is a benchmark interest rate that many big loans are priced against. A loan priced at SOFR plus a number pays that benchmark rate plus an extra amount on top. The letters bp stand for basis points, and one basis point is one hundredth of a percent.

Why it matters to you: the cost of this loan is part of the cost of the computing behind AI tools, so it helps show how pricey it is to build the AI you use.

Quote from IFR: "One tranche of the loan pays a margin of 187.5bp over SOFR while the second pays 150bp over. Both tranches mature on September 30 2033."

Banks working for Broadcom have started raising $60 billion of debt to pay for AI chips for Anthropic and other companies, Bloomberg News reported on 2 October, citing people familiar with the matter. The deal has not been announced. Broadcom declined to comment. We read Bloomberg's report through syndicated write-ups by Quartz and Dataconomy, because the original is paywalled.

What was reported. The package has two parts. Banks are preparing to send syndication letters to investors for a $42 billion Class A senior-secured tranche, the top-ranking slice, backed by collateral. Blackstone is leading a separate $18 billion Class B junior tranche. It will put in $9 billion from its own funds and place the other $9 billion with other investors. When we first wrote this, no interest rate, maturity or list of banks had been reported. IFR has since reported them (see the 16 October update above).

Why we were watching for this. On 1 October Reuters reported, from Anthropic's confidential IPO prospectus, that Broadcom has agreed to lend Anthropic up to $42 billion in convertible notes. That loan could cover about a third of a $125.2 billion, five-year lease of TPU computing capacity, and the prospectus said Broadcom could name a financing partner. We said we would file again when a partner was named. Bloomberg's report names one: Blackstone. The senior tranche is also $42 billion. The reports do not say whether it is the same money as the loan in the prospectus, so we do not assume it.

Where this comes from. In June, Broadcom launched what it calls its AI XPV Platform with Apollo and Blackstone. Apollo announced an initial $35 billion financing that would support Anthropic's expansion of more than one gigawatt of computing. The platform is designed, Apollo said, to enable more than 20 gigawatts for frontier AI labs through 2028. In August, Bloomberg reported talks on a second, larger package: a junior slice of roughly $30 billion and a senior slice of $60 billion to $70 billion, with a special-purpose vehicle issuing the debt and Broadcom guaranteeing part of it. What is going to investors now is $60 billion in total. That is smaller than the August figures, but no report says the deal was cut, so we do not call it a downsizing.

How the structure works. Anthropic does not take ownership of the chips. Investors fund a vehicle that pays for the hardware, and the vehicle leases it to the AI company. Broadcom sells the chips, helps arrange the money and, through the convertible notes in the prospectus, may end up as a lender too. Anthropic's own filing flags "potential conflicts of interest" from that dual role, and warns that certain defaults could speed up its lease payments while cutting off the credit line.

Why it matters for the build-out. Our infrastructure-economics condition asks who pays for a build-out of roughly a trillion dollars, and whose balance sheet carries it until revenue arrives. The first days of October gave two answers from opposite ends of the chain. On 2 October the Financial Times reported that Amazon is in talks to move about $8 billion of its Nvidia chips into an investor-funded vehicle and lease them back. Now Broadcom's banks are raising $60 billion so that a customer can lease Broadcom's chips. In both cases the chips stay where they are, and the debt moves to outside investors.

The scale is large against the customer. $60 billion is roughly half of Anthropic's $125.2 billion TPU lease, and about 12% of the roughly $518 billion of compute commitments in its prospectus, by our arithmetic. Anthropic reported an operating loss of more than $8 billion for 2025. Lenders to the vehicle are lending against chips leased mainly to one company that is growing fast and not yet profitable. Blackstone also has an equity stake in Anthropic.

How we read it. Two things are true at once. Money is arriving: a $9 billion anchor commitment and a $42 billion senior tranche going out to investors, in a week when the 10-year Treasury yield sits near 5.2% to 5.3%, is not a market that has shut. And risk is concentrated: supplier, lender and customer are tied together, and the repayment depends heavily on one lab's revenue. We file it as mixed, against our infrastructure-economics condition, and as minor, because it is the funding side of a loan we have already filed and the deal is not closed. No colors change on the map. Nothing turns red.

What would change the picture. The deal closing, with its final size and final lenders named. The deal being pulled, cut or repriced. Broadcom describing the financing in a filing or on its December earnings call. Anthropic's prospectus becoming public with the note terms. And a second lab named as a borrower under the same platform.