Bank of America, Citigroup and Morgan Stanley Offer $60 Billion of Debt for Anthropic's Chips

Bank of America, Citigroup and Morgan Stanley began offering slices of a $60 billion debt package to other lenders on Monday, Oct. 5, the Financial Times reported ¹. The money would pay for Google's TPU chips, which Broadcom develops and supplies, and Anthropic, the company behind the Claude chatbot, will rent them from 2027 ¹³⁶. Bloomberg laid out the split on Oct. 2: a $42 billion senior layer that gets repaid first, and an $18 billion junior layer, with Blackstone putting in $9 billion from its funds ².

Put plainly, Wall Street is lending against computers an AI company will rent, and Broadcom, the chip maker, backs part of the debt ¹. Anthropic gets its chips in 2027 and pays for them over five years ¹³. Three banks, Blackstone and Broadcom now tie tens of billions of dollars to Anthropic's sales. So what does a $60 billion offer add to the Anthropic prospectus this ledger counted on Sept. 28? Three things: a lender for one named slice of Anthropic's bills, a chip maker's balance sheet behind it, and an early test of whether bond buyers want the risk.

What did the banks start selling on Oct. 5?

Syndication is how banks share a loan too big for one lender to hold. Bank of America, Citigroup and Morgan Stanley committed to fund the package, then began asking peer banks to take pieces, according to the FT ¹. Selling started with the $42 billion of senior loans, which lean on Broadcom's A-minus credit rating and could later trade as investment-grade bonds ¹. Junior lenders get paid after senior ones and stand on Anthropic's credit alone. That $18 billion layer launches later, and the banks may hold off on selling it widely until Anthropic's IPO is done, the FT reports ¹. Bloomberg says other companies would benefit too ².

Who said all this? Reporters and their sources, so far. Bloomberg's account of a deal "which has yet to be announced" rests on people who asked to stay anonymous, and a Broadcom representative declined to comment ². As of Oct. 7, every page the ledger found on the package belongs to a news outlet.

The size has moved before. On Aug. 20, Bloomberg reported talks on more than $60 billion that could reach $100 billion, with a senior piece of $60 billion to $70 billion and a junior piece near $30 billion ⁸. Six weeks later, the package reached lenders at $60 billion ¹².

Here is a frame worth reusing on any AI loan: count a loan when it closes, and count the chips when they switch on. By that test, Oct. 5 marks a launch. Pricing, the final size and a closing date all stay open ¹².

From a filed chip deal to $60 billion on offer in 182 days

Timeline

The data7 rows · sources

Date	Event	Source
April 6, 2026	Broadcom files that Anthropic will reach about 3.5 gigawatts through it from 2027	[6] [7]
June 9, 2026	Broadcom, Apollo and Blackstone launch a $35 billion first tranche for Anthropic	[5]
Aug. 20, 2026	Bloomberg reports talks on more than $60 billion, possibly $100 billion	[8]
Sept. 10, 2026	Broadcom's 10-Q caps its backstop near $29 billion and notes at $42 billion	[4]
Oct. 1, 2026	Reuters reads a five-year, $125.2 billion TPU lease in Anthropic's prospectus	[3]
Oct. 2, 2026	Bloomberg reports letters for $42 billion senior and $18 billion junior debt	[2]
Oct. 5, 2026	Syndication starts with the senior loans; the junior layer launches later	[1]

Broadcom designs the chips, backs the debt and may lend more

Four parts fall to Broadcom in this deal: designer, arranger, backstop and lender. Each one sits in a Broadcom filing or release.

• Designer: Broadcom develops and supplies Google's custom TPUs, and its April 6 filing says Anthropic will reach about 3.5 gigawatts of TPU capacity through Broadcom starting in 2027 ⁶.
• Arranger: on June 9, Broadcom, Apollo and Blackstone launched the AI XPV platform with a first $35 billion tranche for more than 1 gigawatt of Anthropic's computing, and Broadcom handed the rack purchases and leases to a financial partner ⁴⁵.
• Backstop: Broadcom's Sept. 10 quarterly filing says it backstops the customer's lease payments on that deal over five-year terms, with a maximum exposure of about $29 billion ⁴.
• Lender: the same filing says a customer may issue Broadcom up to $42 billion of convertible notes, debt that can turn into shares, and the notes stood unissued as of Aug. 2 ³⁴.

For scale, The Next Web counts one gigawatt as roughly one nuclear plant's output, so Anthropic's 2027 capacity through Broadcom matches about three and a half plants ⁸.

How does the backstop work? If Anthropic stopped paying, Broadcom would owe the gap between 85 percent of what Anthropic still owed and the price the racks fetch in a sale ⁴. Take round numbers. With $10 billion owed and racks that sell for $6 billion, Broadcom would pay $2.5 billion, the gap between $8.5 billion and the sale price. Payments under the backstop stood at $0 when Broadcom filed ⁴.

Reuters, which reviewed Anthropic's confidential IPO prospectus, ties those notes to Anthropic ³. In its account, the notes could pay for about a third of a $125.2 billion, five-year lease of TPU capacity. Anthropic expects the notes to stay unsold until its IPO completes, and it put cash into a restricted account for Broadcom's benefit in April 2026, Reuters reports ³.

Broadcom's own filing makes the case for the structure. "Where necessary, we may provide residual value guarantees, which are contingent liabilities we believe would have a low probability of occurring, supported by the strong profitability trajectory of the leading frontier AI labs and the sustaining value of the underlying assets," Broadcom wrote ⁴. Broadcom bets on two things at once: the labs' profits and the resale value of racks built on its chips.

Hock Tan, Broadcom's chief executive, spoke at the June 9 launch. "This strategic Platform with Apollo and Blackstone synchronizes the world's most sophisticated capital with Broadcom's advanced technological roadmap to meet this once-in-a-lifetime opportunity by enabling our rapidly scaling customers, starting with Anthropic, to realize their most ambitious AI visions with speed and certainty," he said ⁵. Broadcom also sells the chips. Its AI semiconductor revenue reached $16.7 billion in the quarter ended Aug. 2, up 221 percent from a year earlier ⁹.

The debt gives one slice of Anthropic's $518 billion a lender

On Sept. 28, Reuters reported that Anthropic's prospectus lists $518 billion of cloud, computing and infrastructure obligations "in coming years," beside $20.28 billion of cash at the end of 2025 ¹⁰. This ledger counted those obligations as paper and moved capital up 0.3 for the closed funding rounds beside them.

October puts lenders behind one slice. Reuters found the five-year, $125.2 billion commitment for TPU capacity in the same prospectus ³. That lease likely sits inside the $518 billion, an inference, since Reuters left the breakdown unreported. Two separate pools of money now point at it. Banks are raising $60 billion to pay for the chips Anthropic will lease ¹². Broadcom stands ready to lend Anthropic up to $42 billion to help pay the rent ³⁴. By the ledger's arithmetic, the bank debt alone equals about 48 percent of the lease.

Why does that count for more than the $518 billion did? A promise to pay becomes capital when someone commits money behind it. Three banks have committed to fund the package, by the FT's account, and Blackstone has committed $9 billion of its own, by Bloomberg's ¹². Broadcom has done this once already: the $35 billion June tranche launched to fund more than 1 gigawatt for Anthropic ⁵.

Jon Gray, Blackstone's president, set out his firm's interest at that June launch. "The demand for compute has created an unprecedented opportunity to invest at scale across the AI infrastructure ecosystem, including providing financing through our credit and insurance business," Gray said ⁵. Four months later, Blackstone is leading the riskier layer of the October package ².

Krishna Rao, Anthropic's chief financial officer, spoke for the buyer in April. "We are making our most significant compute commitment to date to keep pace with our unprecedented growth," Rao said ⁷.

Anthropic's $125.2 billion chip lease beside the $60 billion banks now offer

Compared

The data5 rows · sources

Unit: billions of US dollars

Item	Value	Source
TPU lease Oct 1	125.2	[3]
Debt offered Oct 5	60	[1] [2]
Notes cap Sep 10	42	[3] [4]
June tranche Jun 9	35	[5]
Backstop cap Sep 10	29	[4]

Why the step stays small

Robert Leitao, managing partner of Rothschild & Co, gave Reuters the case against counting on it. "It feels that there's quite a concentrated bet right now on two companies being able to generate enough revenues to support all the financing that's happened," Leitao said ³. His two companies go unnamed in the Reuters text, which sets his words beside the Broadcom deal. That changes how much weight the financing carries: a chip maker, three banks and Blackstone all lean on Anthropic's sales growing fast enough to pay rent from 2027.

Broadcom's April filing carries the same caution in plainer words. "The consumption of such expanded AI compute capacity by Anthropic is dependent on Anthropic's continued commercial success," Broadcom wrote ⁶. Reuters adds that Anthropic's prospectus flags "potential conflicts of interest" in Broadcom's role as supplier and lender, and warns that some payment defaults could make much of its lease bill due at once ³.

Five facts hold the step at 0.2:

• Status: the package is launched and still open, with its pricing, final size and closing date unreported ¹².
• Sourcing: Bloomberg's terms come from people who asked to stay anonymous, Broadcom declined to comment, and the six companies have stayed silent in public ².
• Gate: the junior layer may wait for Anthropic's IPO, so part of the money depends on a listing that has yet to price ¹.
• Timing: lease payments begin after the chips are installed, and deliveries start in 2027 ¹⁶.
• Weight: capital carries 0.05 of the reading, the smallest share, level with governance.

What Broadcom and Anthropic filed, and what rests on reporters' sources

The record

The data9 rows · sources

Column	Item	Source
Filed or announced	Anthropic reaches about 3.5 gigawatts through Broadcom starting in 2027	[6] [7]
Filed or announced	Broadcom, Apollo and Blackstone launched a $35 billion first tranche on June 9	[5]
Filed or announced	Broadcom's backstop on that deal tops out near $29 billion	[4]
Filed or announced	A customer may issue Broadcom up to $42 billion of convertible notes	[4]
Reported or still open	$42 billion senior and $18 billion junior debt, per Bloomberg and the FT	[1] [2]
Reported or still open	Blackstone's $9 billion, from sources who asked to stay anonymous	[2]
Reported or still open	The $125.2 billion lease, from Reuters' read of a confidential prospectus	[3]
Reported or still open	Junior sales may wait for Anthropic's IPO, by the FT's account	[1]
Reported or still open	Pricing, final size and a closing date	[1] [2]

Where this sits on the ledger

Capital moves up 0.2 at reported confidence. Reported, because two outlets of record, Bloomberg and the FT, describe the package, and Bloomberg's account rests on anonymous sources ¹². Broadcom's own filings confirm the frame around it: the $35 billion first tranche, the $29 billion backstop and the $42 billion notes ⁴⁵. The reported band runs from 0.3 to 0.8 points, and this step sits under its floor for the five reasons above.

The Sept. 28 piece moved capital up 0.3 on closed funding rounds; this one counts debt the banks are still selling. A closed syndication, confirmed by Anthropic, Broadcom or the banks, would earn a larger step. On its own, this piece takes the reading from 2.6 to 2.8.

Banks' $60 billion offer lifts the capital reading 0.2 points

The move

The data5 rows · sources

Measure	Value
Reading before this day	2.6
This piece's move	+0.2 (Capital, reported)
Band for reported evidence	0.3 to 0.8
Reading after the day	2.8
Distance to 100	97.2

By the numbers

• $60 billion: the debt package Bank of America, Citigroup and Morgan Stanley began syndicating Oct. 5 ¹²
• Senior debt of $42 billion and junior debt of $18 billion, per Bloomberg ²
• Blackstone's own commitment: $9 billion of the junior layer ²
• Lease of TPU capacity: $125.2 billion over five years, per Reuters ³
• Up to $42 billion in convertible notes Anthropic may issue to Broadcom ³⁴
• About $29 billion: Broadcom's maximum backstop on the June deal ⁴
• AI semiconductor revenue of $16.7 billion in Broadcom's quarter ended Aug. 2 ⁹
• 3.5 gigawatts reaching Anthropic through Broadcom from 2027 ⁶

What to watch

Four events would settle the size of this step. A closing announcement from Broadcom, Anthropic or the banks, with a final size and price, would turn a launch into closed financing. Anthropic's public IPO filing would put the $125.2 billion lease and the notes on EDGAR, the SEC's public database, where any reader can check them. Broadcom's annual report for the year ending Nov. 1 should update the backstop and say whether any notes went out ⁴⁹. A smaller package, a pulled junior layer or a delayed listing would argue for a correction downward.

The human stakes reach past Wall Street. If the senior debt moves into the investment-grade bond market, as the FT says it could, it lands in the kinds of funds that hold ordinary savings ¹. The open question decides the next move: once Anthropic's books are public, will junior lenders buy the rest of the $18 billion?