Anthropic Blackstone chip financing: what was offered
Anthropic has offered Blackstone a yield above 10% on a $9 billion piece of a $60 billion AI chip financing package, according to a Financial Times report published Friday, October 16. Reuters carried the story the same day through Finwire, and both reports rely on people familiar with the matter.
The Anthropic Blackstone chip financing offer sits inside a package that has not closed, and it arrives while Wall Street is already worried about debt tied to AI. Anthropic's pricing gives investors a direct read on what private lenders now demand to fund AI computing. That makes it more than a deal headline.
The terms could still change. Neither Anthropic, Blackstone nor Broadcom has commented on the record in the reports reviewed, and American Bazaar reported that both companies declined to comment on the earlier Bloomberg report. The 10% figure may be an opening position rather than the final coupon.
How the Project North Star package is split
Anthropic's compute spending runs through lease and debt structures rather than outright chip purchases. Investors fund a special-purpose vehicle that owns the hardware and leases it to Anthropic, according to Crypto Briefing.
The package is called Project North Star. The reports say it would fund Anthropic's purchase of about 1.5 gigawatts of Google's custom TPUs, and it breaks into two layers:
- A $42 billion senior-secured tranche guaranteed by Broadcom.
- An $18 billion junior tranche backed by Anthropic's five-year chip lease payments.
Blackstone-managed funds would put in $9 billion, which is half of the junior tranche. The remaining $9 billion of junior debt would be offered to other investors in coming months, possibly at lower yields, according to the FT.
Bloomberg reported on October 2 that banks including Bank of America, Citigroup and Morgan Stanley were preparing to syndicate the senior tranche.
How the 10% yield compares with bond market pricing
Similarly rated borrowers typically pay about 7% in public bond markets, according to the reporting. Anthropic's offered 10% coupon sits about three percentage points above that benchmark, and total returns could exceed 10% after issuance discounts and fees.
The earlier deals were already expensive. The table below lines up the reported pricing.
| Financing | Tranche or detail | Reported pricing |
|---|---|---|
| Project Big Sky, about four months before this offer | About $4.4 billion raised | 8.5% |
| June 2026 $35 billion package | Junior debt | About 8.5% |
| June 2026 $35 billion package | Senior debt | 5.75% |
| Project North Star offer | Junior slice offered to Blackstone | 10% coupon, above 10% total return |
| Similarly rated public bonds | Typical borrower | About 7% |
Anthropic's credit profile helps explain the premium. KBRA rates the company BB+, one notch below investment grade. The Deep Dive, citing the FT, reported that this rating went unreported during the June financing.
What the Broadcom prospectus disclosure reveals
Anthropic's IPO prospectus, filed around October 1, disclosed that Broadcom may lend up to $42 billion, potentially convertible into Anthropic equity. The filing also flags potential conflicts of interest, because Broadcom is both the chip supplier and a lender on the deal.
The prospectus and the bank-led reports describe the $42 billion piece differently. The prospectus points to a Broadcom lending commitment that could convert into equity. Bloomberg and other outlets describe a senior tranche syndicated to investors and guaranteed by Broadcom. Until final documents surface, the exact structure is unclear.
The lease commitment behind the financing is large. Anthropic has committed $125.2 billion over five years to lease TPU capacity, and the $42 billion facility covers about one-third of that total, Quartz reported. CNBC has reported that Anthropic is expected to become Broadcom's largest compute customer in 2027.
This financing is separate from Anthropic's IPO valuation talks, which have fallen to $1.5 trillion as growth slows. It sits in the financing layer beneath that story, and it shows how much the AI buildout costs to fund.
Why AI debt is under scrutiny this week
The timing makes this more than a financing footnote. According to Charles Schwab's market update, the S&P 500 was headed for a weekly loss on Friday, with softness in highly capitalized AI stocks.
AI credit worries have already moved beyond one company. Startup Fortune reported that AI-credit fears have spread from CoreWeave's bonds, and investors have been asking whether AI debt is priced for risk. For the equity side of that pressure, see USA 24's coverage of why AI stocks are falling.
The winners and losers are easy to sketch if the offer closes at the reported terms. Blackstone-managed funds would earn a yield well above public bond levels. Anthropic would pay a premium over what similarly rated borrowers typically pay, on top of a very large lease commitment.
What to watch and what readers can do now
Most readers do not need to act. Private credit and AI-linked debt are becoming a larger part of the market, and pricing like this helps show how costly the AI buildout is becoming. Anyone with retirement or pension exposure should understand that these instruments may sit inside their funds.
Readers who hold AI-exposed stocks or credit funds can check issuer disclosures and track whether the package closes. For businesses that use Claude, financing costs can eventually shape pricing, capacity and product roadmaps. Nothing in the reporting says that will happen.
These are the items to watch:
- Whether the $60 billion package closes, and at what final coupon.
- Where the remaining $9 billion of junior debt prices once it reaches other investors.
- How Anthropic and Broadcom reconcile the prospectus language with the syndication reports.
- Whether regulators or investors press on Broadcom's dual role as supplier and lender.
The clearest signal will come from the bond market, not a press release. If the junior debt clears near 10%, lenders will have confirmed that AI compute carries a steep premium. If it clears nearer the 7% benchmark, the market will have judged the risk smaller than the opening offer implied.
