Anthropic's IPO Filing Shows $895 Billion in Compute Commitments Backed by Supplier Financing

According to Fortune, the commitment is well above the roughly $600 billion that one bond analyst had estimated earlier. The amended prospectus also shows margins under pressure as compute costs rise.

How The Financing Works

The biggest single arrangement described is a $63 billion deal with Broadcom announced on October 26. Under it, a newly formed company financed by Bank of America, Citi, Morgan Stanley and Blackstone buys Broadcom chips and networking equipment and leases them to Anthropic. Anthropic's rent pays back the lenders. Fortune said deliveries are expected to start in 2027.

Broadcom has also given a residual-value backstop. If Anthropic defaults and the equipment sells for less than the amount still owed, Broadcom covers 72.5 per cent of the gap. Fortune put Broadcom's maximum potential liability at about $43 billion once the equipment is deployed.

A separate facility agreed in March 2026 lets Anthropic pay up to $42 billion of eligible quarterly rent to Broadcom with convertible notes. Under the standard terms the notes carry 9 per cent interest, which is added to the debt, and convert into stock at 90 per cent of the market price. If Anthropic misses revenue conditions, the rate rises to 13 per cent and the conversion price falls to 85 per cent of market, which would dilute shareholders further. A sustained failure to meet the conditions can end further funding. Fortune noted that the revenue thresholds are well below Anthropic's current growth: revenue rose 45 per cent from the previous quarter in the third quarter and more than 1,000 per cent from a year earlier.

Other suppliers have tied their money to their own hardware, according to the filing as described by Fortune. Some Google funding becomes available as Anthropic takes on leases for Google's TPUs. AMD's investment depends on GPU delivery and deployment milestones. Anthropic is also building its own cloud capacity through a programme called Anthropic Direct. It commits to data centre space separately from later chip purchases, which gives it more time to judge demand before buying the chips.

Anthropic reported $146.6 billion of liquidity as of September 30, including cash, short-term investments and undrawn bank credit.

Where The Risk Sits

The filing says Anthropic's ability to grow its compute depends on a small number of cloud providers, partners and financiers staying willing and able to support it. Money tied to one supplier's hardware may not carry over to another's.

Analysts quoted by Fortune said the structure spreads risk across the supply chain. Gil Luria of D.A. Davidson said Broadcom probably had to offer the backstop to avoid losing sales to Nvidia, which has given similar support to its own large buyers. Andrew Giudici of KBRA said: "Custom TPUs generally have greater re-leasing risk than Nvidia GPUs." Because fewer customers can use TPUs, repossessed equipment could be harder to place.

Stijn Van Nieuwerburgh of Columbia Business School told Fortune that cash-rich suppliers can absorb losses, but that a drop in demand would probably hit several of their balance sheets at once. He said "supplier financing supports construction", but that paying for it in the end requires revenue from end customers. The suppliers are also spending heavily themselves: Fortune cited negative free cash flow of $42.4 billion at Amazon over the past 12 months and $9.1 billion at Alphabet in the third quarter.

Amodei has spoken about this timing risk before. In a February interview with Dwarkesh Patel he said that buying compute ahead of expected growth can backfire, adding: "If you're off by a couple years, that can be ruinous."

Why It Matters

For investors weighing the Anthropic listing, the prospectus shows a company whose growth depends on capacity it does not fully pay for upfront. For chipmakers, the deals show that winning large AI customers now often means taking on part of their credit risk. Fortune said the IPO proceeds could reduce Anthropic's dependence on supplier milestones by letting it buy hardware directly.