Financing Layer: Anthropic Offers Blackstone 10%+ to Anchor the Junior Tranche — the Unguaranteed AI-Credit Price Arrives
The off-balance-sheet financing story this note tracks (prior revisions: the Broadcom–Anthropic $42B senior tranche clearing at SOFR+150/187.5, SpaceX's $40B chip-debt CDS record, Volta's $5B GPU loan selling at 95 cents and past 11%, banks refusing new-issue) got the datum it was missing this cycle: a disclosed price for the unguaranteed tier of AI-lab credit. The FT reported (Oct 16, wire confirmation 20:56 ET via Reuters) that Anthropic has offered Blackstone a coupon above 10% to anchor the junior tier of the $60B Broadcom-arranged package — "Project North Star," the largest chip-financing arrangement to date.
The pricing, and what it's against. Blackstone-managed funds would commit $9B of their own capital — half of the $18B Class B junior tranche — and syndicate the rest. Per the FT summary: "Blackstone has been offered a 10% coupon, with total returns exceeding that once issuance discounts and fees are counted, versus roughly 7% that similarly rated borrowers pay in public bond markets." The instruments can also convert into Anthropic shares. The $42B Class A senior-secured tranche (bank-led, Broadcom-guaranteed) covers about a third of Anthropic's $125.2B, five-year lease commitment for 3.5GW of Google TPU capacity coming online from 2027. The package extends the AI XPV vehicle Broadcom, Apollo and Blackstone struck in June, which already raised $35B and targets financing more than 20GW of AI compute by 2028.
The vendor-financing conflict, priced by the borrower itself. Anthropic's own IPO prospectus flags "potential conflicts of interest" from Broadcom's dual role as chip supplier and lender, and "warns that triggering certain payment or performance defaults could accelerate a material portion of its lease obligations while cutting off access to the $42 billion credit line" — the cross-default architecture of the circular-financing model stated in the borrower's own filing (The Demand Base Gets Marked Down Before the IPO: Investors Temper Anthropic From $2T to ~$1.5T, Custom Silicon: Microsoft's Maia 300 Claims 40% More Tokens per Megawatt Than "Leading GPU-Based Systems" — the Second First-Party Inference Chip in Three Weeks).
The systemic read hardened the same week. Per Goldman Sachs, risk premiums on US high-yield bonds with AI exposure widened 25bps over Tuesday–Wednesday to 360bps over Treasuries; Gartner warned Wednesday that more than 80% of neocloud providers could cease independent operations by 2030; and Nebius fell 12% on CoreWeave debt contagion (CoreWeave's own 5-yr CDS printed a record 1,194.5bps Thursday — see Equity Layer: BofA's Capital-Cycle Math — $1T Consensus Capex, Token Prices -50%, and an 8-Day SOX Streak That Only NVDA Survived). Nebius is the cautionary exhibit on why the spread matters: AI cloud revenue of $575M (+514% YoY) at a 50% adjusted EBITDA margin, against $5.7B of quarterly capex on $582.3M of group revenue, >$40B of obligations and >$9B of expected 2026 customer prepayments — demand is real, but the funding gap between EBITDA and buildout is the entire story.
What it means for the capex thesis. The flywheel is still turning — the largest chip financing ever assembled found an anchor at 10%+ — but every rung of the AI-credit curve stepped higher again this cycle: guaranteed senior at SOFR+150/187.5 → unguaranteed AI-lab junior at 10%+ (~300bps over the ~7% public equivalent) → neocloud junk at 11%+ → CoreWeave CDS implying >60% five-year default odds1. The capex story's demand side remains intact; what is being repriced, week by week, is the cost of the debt that carries it. The next datum is the final close of the Blackstone $9B anchor and the syndication of the remaining junior paper — and whether the equity-conversion feature becomes standard (lenders demanding upside, not just coupon, is late-cycle credit behavior).
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An instance of The AI buildout now trades as a financing chain, not a basket. — The financing chain is graded link by link by credit standing — guaranteed senior clears tight while the unguaranteed junior needs 10%+ plus equity conversion, proving the price of money is set by who stands behind the paper, not the chips. ↩︎